API 510 Highlights Practices vs API Inspector Cert Prep
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
API 510 Highlights Practices
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This Free version only has 15 practices and 15 exams questions to show you the general view of the app. The Full Exams version includes more than 1000 questions that cover the whole sections of API 510 Closed-book test.
API Inspector Cert Prep
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API Inspector Cert Prep helps you study for the API individual certification exams โ 510 (Pressure Vessel), 570 (Piping), and 653 (Aboveground Storage Tank) โ with a large bank of exam-style practice questions and realistic timed mock exams. Each certification is its own module you can unlock, built from that exam's published Body of Knowledge and the codes and recommended practices it references. WHAT'S INSIDE API 510 โ Pressure Vessel Inspector: 323 questions API 570 โ Piping Inspector: 291 questions API 653 โ Aboveground Storage Tank Inspector: 251 questions PRACTICE THE WAY YOU LEARN - Practice mode covers the whole module, ordered to surface your weak areas first - Drill any single topic on its own - Every question includes a worked explanation with the relevant code reference - Timed mock exams mirror exam-day pace, with a running clock and a scored result TRACK YOUR READINESS - Per-topic and overall readiness show exactly where you stand - Spaced-repetition scheduling brings back what you keep missing - Review any missed question, and save the tricky ones for later - Exam history keeps a record of your past mock exams PLAN AROUND YOUR TEST DATE - Set your exam date and get a daily target to cover the bank in time - See days remaining and current readiness at a glance BUILT TO JUST WORK - No account, no login โ everything stays on your device - Works fully offline; the only network use is purchases - Light, dark, and system themes Buy only the modules you need. A free sample of each module is available before you unlock it.
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Verdict
The clearest difference is in-app purchases: API 510 Highlights Practices at none against API Inspector Cert Prep's 3. API 510 Highlights Practices also leads on iOS requirement (9.1 vs 15.1). On price, update cadence, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. API Inspector Cert Prep sells 3 one-off in-app purchases. API 510 Highlights Practices asks for nothing beyond the download.
API 510 Highlights Practices ships an update every 2 months, API Inspector Cert Prep every 3 months. The most recent releases landed on October 1, 2026 and October 2, 2026 respectively.
| Parameter | API 510 Highlights Practices | API Inspector Cert Prep |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months โ better | Every 3 months |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.1 โ better | 15.1 |
| Further details โ not scored | ||
| Size | 16 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Nguyen Hieu | Simon Shih |
In-app purchases
API 510 Highlights Practices
No in-app purchases
API Inspector Cert Prep
- API 510 โ Pressure Vessel Inspector$19.99
- API 570 โ Piping Inspector$19.99
- API 653 โ Storage Tank Inspector$19.99
Questions
Is API 510 Highlights Practices free?
Is API Inspector Cert Prep free?
Do API 510 Highlights Practices or API Inspector Cert Prep have ads?
Which is updated more often, API 510 Highlights Practices or API Inspector Cert Prep?
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