Comparison

Inspectors Path vs API Inspector Cert Prep

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Inspectors Path

Features
Read full description

Inspector's Path is a professional exam preparation app designed for inspection and certification candidates who want structured, practical, and measurable study support. The app helps users prepare for API 510, API 570, API 653, API 1169, API 936, SIEF, SIRE, and SIEE through guided practice, premium resources, and progress tracking in one place . With Inspector's Path, you can: Take dynamic practice exams built to simulate real test preparation Review answers, explanations, and completed exam sessions Track performance over time and identify weak areas by topic Unlock exams and premium learning resources Read study materials inside the app with built-in PDF viewing Manage your account, subscription, and exam access Use voice-assisted controls during supported practice flows Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

API Inspector Cert Prep

Features
Read full description

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.

Screenshots

Inspectors Path4 screens
API Inspector Cert Prep4 screens

Verdict

The call

Inspectors Path and API Inspector Cert Prep are too close to call on the numbers: across 5 compared parameters โ€” price, ads, in-app purchases and device support among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Inspectors Path sells 10 in-app purchases, starting at $199.99 per 6 months and API Inspector Cert Prep sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Inspectors Path versus API Inspector Cert Prep: the parameters behind the verdict, then further details
ParameterInspectors PathAPI Inspector Cert Prep
PriceFreeFree
Update frequencyEvery 3 weeksโ€”
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 โ€” better15.1
Further details โ€” not scored
Size58 MB31 MB
Age rating4+4+
DeveloperInspectors Path llcSimon Shih

In-app purchases

10 purchases

Inspectors Path

Subscriptions1
  • Pro Plan 6 Months$199.996 Months
One-time9
  • API 570 Unlock$150.00
  • API 653 Unlock$150.00
  • API 936 Unlock$150.00
Show 6 more
  • API 1169 Unlock$150.00
  • API SIEE Unlock$150.00
  • API SIFE Unlock$150.00
  • API SIRE Unlock$150.00
  • API 1184 Unlock$150.00
  • API 510 Unlock$150.00
3 purchases

API Inspector Cert Prep

One-time3
  • 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 Inspectors Path free?
Inspectors Path is free to download, with in-app purchases available.
Is API Inspector Cert Prep free?
API Inspector Cert Prep is free to download, with in-app purchases available.
Do Inspectors Path or API Inspector Cert Prep have ads?
Neither Inspectors Path nor API Inspector Cert Prep shows ads.

Other comparisons