10 Best API 570 Certification Study Resources

How this list is ordered, and what actually decides it

The order below is by how well each option serves the question in the title, which is what the best API 570 certification study resource is for a candidate in 2026. Each option is judged on published features and prices, and every price and date was checked on 2026-09-15. There is no review score here and no third party tested anything on this list.

API 570 is a piping inspection exam with a particular shape: 7.5 hours in two parts, 110 closed book questions then 60 open book, with the pertinent codes supplied as PDFs on screen. What it rewards is finding the exact formula, equation or table in a code under a 3.75 hour clock. Work out whether you are short of teaching, questions or the reference documents before you spend anything. The nearest sibling exam is API 510, and the API 510 Body of Knowledge guide shows how a body of knowledge document is laid out.

1. API 570 Exam Prep 2026: best for practising piping calculations and clause lookup speed

API 570 Exam Prep 2026 is a phone based bank aimed squarely at the piping calculations and code clause lookups that decide the open book half. It is out now on Google Play, with the iOS version still to come, so Android users can install it today and iPhone users cannot. The API 570 Exam Prep 2026 app is free to download, with Google Play showing in app purchases from 14.99 GBP to 69.99 GBP, and no iOS price is published yet.

Every question comes with an explanation and a code clause and page reference, so you rehearse finding the rule in your own books rather than just picking an answer. Guided piping calculations are worked one operation at a time for corrosion rate, remaining life, pipe thickness and test pressure, and a searchable study library can be browsed by topic or clause with linked practice questions. Clause finding is trained deliberately: after a session you get clause match accuracy and lookup time reported separately.

Where it wins

• Every question carries an explanation plus a code clause and page reference
• Guided piping calculations worked one operation at a time: corrosion rate, remaining life, pipe thickness and test pressure
• A searchable study library browsable by topic or clause, with linked practice questions
• Clause match accuracy and lookup time reported separately after each session
• Spaced review of missed questions, with three free hints when you are stuck

Where it falls short

• Android only at the moment. The app is live on Google Play but there is no iOS release yet, so iPhone users are locked out
• It is guided practice, not a taught course. There is no instructor, no teaching of the codes from first principles, and it assumes you own the reference documents
• Very new on the store: the Play listing shows 0+ downloads and no ratings, so there is no independent quality signal

The most calculation focused mobile option for API 570 and the only one here that scores your clause lookup speed, but the missing iOS release and the absence of taught content are genuine limitations.

2. API 570 Practice Test: best for free full length piping mocks on either phone platform

API 570 Practice Test from Power Engineering 101 Ltd. is free on both the App Store and Google Play and needs no sign up. Three modes cover a timed full length final exam, a practice exam with instant right or wrong feedback, and flashcards, and the final exam mode returns a performance breakdown across code sections, which is genuinely useful for spotting weak areas before the real paper.

There is no cost to download and no in app purchase shown on the Play listing. Version 1.0 was released 30 June 2025 and there was no update in the following year, so freshness against the current Body of Knowledge is unproven, and there are no ratings or reviews on either store. More importantly for this exam, there are no calculation walkthroughs and no code clause search, so the open book half goes unrehearsed.

Where it wins

• Three modes: a timed full length final exam, a practice exam with instant feedback, and flashcards
• The final exam mode returns a performance breakdown across code sections
• Available on both iOS and Android, unlike several API 570 apps
• No cost and no in app purchase shown on the Play listing

Where it falls short

• Version 1.0 released 30 June 2025 with no update in the following year, so freshness against the current Body of Knowledge is unproven
• No ratings or reviews on either store
• No calculation walkthroughs and no code clause search, which is a gap for the open book section of this particular exam

The best free way to sit a full length API 570 style mock on your phone, but it tests recall and does not teach the calculation or clause work the exam leans on.

3. API 570 Helpmate: best for custom quiz building from a piping Body of Knowledge aligned bank

API 570 Helpmate from Austenite Pty Ltd is one of the few API 570 apps listed on both the App Store and Google Play. It is free to download on each with in app purchases, and the developer says its knowledge base is aligned with the current Body of Knowledge for piping inspection certification. Progress tracking and custom quizzes let you target the areas you are weakest on, and the iOS build is recent: version 1.1, released 21 April 2026.

The two gaps are price and calculation practice. In app purchase prices are not published on either listing, so the true cost of the full knowledge base is unknown before you install. Nor does the listing make any claim about worked calculations or clause level references, which are central to this exam: the open book half is decided by whether you can find and apply a formula. A very short version history and no UK ratings make quality hard to judge from outside.

Where it wins

• Knowledge base the developer says is aligned with the current Body of Knowledge for piping inspection certification
• Progress tracking and custom quizzes to target weak areas
• One of the few API 570 apps listed on both the App Store and Google Play
• Recent build: version 1.1 on iOS, released 21 April 2026

Where it falls short

• In app purchase prices are not published, so the true cost of the full knowledge base is unknown before installing
• No ratings or reviews in the UK storefront and a very short version history
• The listing makes no claim about worked calculations or clause level references, which are central to this exam

A credible cross platform rival on breadth of knowledge base and custom quizzes, but the opaque pricing and the absence of any calculation practice make it an incomplete API 570 tool.

4. API 570 Highlights Practices: best for a free iPhone taster of API 570 question style

API 570 Highlights Practices from Nguyen Hieu is a free iPhone only download with a small sample of practice and exam questions. The full question set is a paid upgrade and its price is not published. The developer describes the full version as more than 1000 questions covering every section of the API 570 test, a claim from the App Store description that is not independently verified.

The decisive fact is the update history. Version 1.2.3 was last updated on 3 November 2018, so the content cannot reflect the current Body of Knowledge or the current API 570 edition, which makes it unsafe as a primary resource for a 2026 or 2027 exam window. The free download is a taster rather than a study plan, and there is no Android version, no ratings and no reviews.

Where it wins

• Free to try before paying, with sample practice and exam questions
• The full version is described as more than 1000 questions covering every section of the API 570 test
• Still listed in the UK App Store years after release, so it remains findable

Where it falls short

• Effectively abandoned: version 1.2.3, last updated 3 November 2018, so it cannot reflect the current Body of Knowledge or the current API 570 edition
• The free download is a taster only and not a study plan
• No Android version found on Google Play, no ratings and no reviews

Only worth a free look. Anything last updated in 2018 is risky as a primary resource for a 2026 or 2027 exam window.

5. CASTI API ICP Exam Preparation (API 570): best for a live instructor tied to a set exam window

CASTI's API ICP Exam Preparation gives you a live instructor and a scheduled programme anchored to a specific API 570 exam window. There is a choice of five days of live instructor led training, in person or remote, or a self study version with online lessons and email support from an e-instructor. Online practice exams are included in both formats, the instructor led option adds a live practice exam review, and the page lists self study intake for the October 2026 exam window.

At 1,995 instructor led, it costs more than every app and book in this list combined, and that is before the API exam fee. Self study is 995, and the page shows the dollar symbol only without spelling out the currency, so treat the currency as unverified. Self study is browser based with no app and no offline practice, and the included notebook ships within Canada only. Compare the full fee picture first.

Where it wins

• Choice of 5 days of live instructor led training, in person or remote, or a self study version with email support from an e-instructor
• Online practice exams included in both formats, with a live practice exam review added to the instructor led option
• Self study intake listed for the October 2026 exam window, so the schedule is tied to a real exam date
• A course notebook comes with the instructor led option, although it ships within Canada only

Where it falls short

• At 1,995 it costs more than every app and book in this list combined, and the page shows the dollar symbol only, so the currency is unverified
• Browser based self study with no app and no offline practice
• Fixed cohorts and exam windows, and the printed notebook cannot be shipped outside Canada

A properly structured taught course with practice exams behind it, best suited to a candidate whose employer is funding the certification.

6. PetroKnowledge API 570 course: best for teaching open book code navigation speed over five days

PetroKnowledge's API 570: Piping Inspection Code course is the most explicitly exam technique focused option here. It is built around the API 570 body of knowledge and the open book paper, including corrosion rate and remaining life calculations, and the page states the problem plainly: candidates must learn to find the exact formula, equation and table in the codes during the limited open book time. That is the right thing to teach, and few providers say it out loud.

It also covers the surrounding references candidates are examined on: API RP 571, API 574, API 577, API 578, ASME B31.3, ASME Section V, ASME IX, ASME B16.5 and ASME PCC-2. The classroom fee is 5,950 USD in Dubai and the online option is 4,950 USD, with dates including 29 March to 2 April 2027 in Dubai and 16 to 20 August 2027 in Dubai and online. Travel is extra, dates are fixed, and nothing remains after the week.

Where it wins

• Built around the API 570 body of knowledge and the open book exam, including corrosion rate and remaining life calculations
• Makes open book code navigation the headline: the page states candidates must find the exact formula, equation and table in the codes
• Covers the surrounding references including API RP 571, API 574, API 577, API 578, ASME B31.3, ASME Section V, ASME IX, ASME B16.5 and ASME PCC-2
• Classroom and online options, with online 1,000 USD cheaper and no travel required

Where it falls short

• Only a few dates per year and they are fixed, with most classroom dates in Dubai
• Travel and accommodation are extra on top of the 5,950 USD fee
• Nothing remains after the week: no app, no question bank and no ongoing review

The most explicitly exam technique focused of the classroom courses, and the only one here that makes open book code navigation the headline, but it is a week away and priced accordingly.

7. TWI API 570 course: best for a recognised UK training body that publishes the eligibility rules

TWI Ltd's API 570 Piping Inspector Examination Preparation Course is a scheduled course from a well known UK training body. Its topics are stated to follow the API 570 Body of Knowledge in detail, covering ASME IX and B31.3 welding requirements, ASME Section V non destructive testing, pressure piping design review and inspection practices. It also covers corrosion, minimum thickness determination and remaining life calculations, plus degradation mechanisms including erosion, corrodents, hydrogen and H2S damage and alloy degradation.

It does one thing most providers do not: the page spells out the API examination entry requirements, so you can check eligibility before booking. Those rules are strict, requiring employment by or a contract with an authorised inspection agency or owner user organisation plus an education and experience route. The gap is price: no fee is published at all, so you cannot compare cost without enquiring, and no app or offline practice is included.

Where it wins

• Topics stated to follow the API 570 Body of Knowledge in detail, including ASME IX and B31.3 welding, ASME Section V non destructive testing and pressure piping design review
• Covers the calculation ground directly: corrosion, minimum thickness determination and remaining life calculations
• Covers inspection and degradation mechanisms including erosion, corrodents, hydrogen and H2S damage and alloy degradation
• Spells out the API examination entry requirements, which most providers do not

Where it falls short

• No price published at all, so you cannot compare cost without enquiring
• Runs to a schedule rather than at your own pace, and no app or offline practice is included
• Entry requirements are strict: you must be employed by or under contract to an authorised inspection agency or owner user organisation and meet one of the education and experience routes

A solid, credible UK option and one of the few providers that publishes the eligibility rules up front, but the unpublished fee makes it impossible to compare value without contacting TWI.

8. Wilkinson Coutts API 570 course: best for a blended UK programme with four months of eLearning

Wilkinson Coutts runs a blended UK programme for piping inspectors: about four months of eLearning with question sets, followed by an intensive classroom week delivered as a virtual classroom over MS Teams. The published cohort runs eLearning from 19 June 2026 with classroom training 21 to 25 September 2026, an API application deadline of 7 August 2026 and an exam window of 9 to 30 October 2026. The classroom block is timed to finish immediately before the exam window.

The price is 2,540 GBP excluding VAT, and API exam fees are not included, so the real cost is higher than the headline and the commitment is longer: roughly four months of eLearning before the classroom week. The provider states first time pass rates above 95 percent and links to the API published pass rate of about 50 percent for context, but that 95 percent figure is the vendor's own and is not independently audited.

Where it wins

• A four month eLearning syllabus with question sets runs before the classroom week, so you arrive already familiar with the codes
• The classroom block is timed to finish immediately before the API exam window, with the application deadline and exam window published next to the booking
• UK based in Aberdeen with virtual classroom delivery over MS Teams
• Supplies the exam context: the provider states first time pass rates above 95 percent against the API published pass rate of about 50 percent

Where it falls short

• The fee excludes VAT and excludes the API exam fee, so the real cost is higher
• It is a long commitment: roughly four months of eLearning before the classroom week
• The pass rate claim is the vendor's own and is not independently audited

The most thorough UK route for piping inspectors whose employer will fund a proper programme, as long as you can start the eLearning months in advance.

9. The API 570 code book and free Body of Knowledge: best for the authoritative clause wording and the free exam syllabus

The API 570 code book with the free official Body of Knowledge and Publications Effectivity Sheet is the authoritative source itself, plus the free documents that tell you what is examinable and what is open book. The Body of Knowledge for the 2026 exams and for the February to June 2027 exams is free, and the Publications Effectivity Sheet lists exactly which sections of which documents you may use in the open book section. The exam day is stated plainly as 7.5 hours with 110 closed book and 60 open book questions.

The code book costs money. The API 570 standard is 199.04 EUR for a single user DRM protected English PDF from the NSAI standards shop, and the exam fee is 875 USD for API members and 1,125 USD for non members, with recertification at 745 USD or 855 USD and an online open book quiz every six years. The documents contain no questions and no worked examples, so they cannot prepare you alone. See what the exam questions look like and the code document options.

Where it wins

• The Body of Knowledge for the 2026 exams and for the February to June 2027 exams is free, with the Publications Effectivity Sheet listing exactly what is open book
• The exam structure is stated plainly: 7.5 hours with 110 closed book and 60 open book questions, with code PDFs on screen
• Separate Body of Knowledge documents are published for the 2026 and 2027 exam windows
• Exam and recertification fees are published, and recertification requires an online open book quiz every six years

Where it falls short

• The code book contains no questions, no explanations and no worked examples, so it cannot prepare you on its own
• The standard costs 199.04 EUR for a single user DRM PDF, and the exam assumes you can navigate several other documents as well
• The skill the exam actually tests, fast clause location under a 3.75 hour open book clock, has to be built with practice rather than by reading

Essential and irreplaceable, and the free Body of Knowledge plus effectivity sheet are the best free starting point for the whole exam, but these are references rather than preparation.

10. A Quick Guide to API 570 (Matthews): best for a compact, cheap paper companion to the syllabus

A Quick Guide to API 570 Certified Pipework Inspector Syllabus by Clifford Matthews, published by Elsevier under the Woodhead imprint, is a compact paper walk through the syllabus with example questions and worked answers. It states that it covers the full API body of knowledge for the examination, listing API 570, API RP 571, API RP 574, API RP 577, API RP 578, ASME V, ASME IX, ASME B16.5 and ASME B31.3. Print ISBN 9781845695699 and eBook ISBN 9781845696849 cover both formats.

The author's training business runs API 510, 570 and 653 courses and is described by the publisher as an authorised global training provider to ASME. That said, the first edition is dated 22 May 2009 with no later edition listed, so its code cross references predate the current API 570 edition. There is no question bank, no timed mock and no clause lookup practice, and no price is displayed on the publisher's page.

Where it wins

• Summarises the API 570 syllabus with multiple example questions and worked answers
• States that it covers the full API body of knowledge for the examination, listing API 570, API RP 571, API RP 574, API RP 577, API RP 578, ASME V, ASME IX, ASME B16.5 and ASME B31.3
• Short and inexpensive next to a five day course, and it is paper you can annotate
• Written by an author whose training business is described by the publisher as an authorised global training provider to ASME

Where it falls short

• The first edition is dated 22 May 2009 and no later edition is listed, so its code cross references predate the current API 570 edition
• No question bank, no timed mocks and no way to practise clause lookup speed
• The publisher displays no price on the product page, so cost depends on the retailer and the format

A useful and cheap paper companion for understanding the syllabus, but at this age it must be read alongside the current code rather than relied on for clause references.

Which API 570 study resource to pick

Match the resource to the gap. If you are on Android and the gap is calculation practice and clause speed, the app at the top of this list is the only option here that reports clause match accuracy and lookup time, and it is free to try. If you are on iPhone and want a free full length mock today, API 570 Practice Test is free on both stores, though it has not been updated since mid 2025.

If you need teaching, the courses win: PetroKnowledge is the most direct about open book code navigation, Wilkinson Coutts gives you four months of eLearning before the classroom week, CASTI supplies a live instructor with practice exams, and TWI is the clearest on eligibility, though it does not publish a fee. Compare the fee structures before committing, and read what the exam questions look like for how the two halves behave.