Comparison

NDT Cert Study vs Welding Study Guide

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

Head to head
About

NDT Cert Study

Features
Read full description

NDT Cert Study is a practice-question app for anyone preparing for nondestructive testing certification exams. It covers the main methods and code references: • Ultrasonic (UT) Levels I and II, plus phased array (PAUT) • Penetrant (PT) Levels I and II • Magnetic particle (MT) Levels I and II • Radiographic (RT) Levels I and II • API 1104 weld acceptance-criteria questions integrated into the UT and RT tracks Each question includes a worked explanation, so you learn why an answer is right, not just which one. The app tracks how ready you are by topic, lets you save tricky questions for another pass, and includes timed practice exams. Everything works offline. Your progress stays on your device. Modules unlock with a single one-time purchase. No subscription. NDT Cert Study is an independent study aid. It is not affiliated with, endorsed by, or sponsored by API, ASNT, ISO, CGSB, BINDT/PCN, or TWI/CSWIP. All certification names and marks are the property of their respective owners.

About

Welding Study Guide

Features
Read full description

Read welds, remember the terminology, and build a steady exam-day rhythm. GaugePass is an independent study aid for people preparing for the AWS Certified Welding Inspector exam. It combines focused welding practice with an interactive gauge trainer, a structured question bank, spaced-repetition flashcards, and a practical reference library. PRACTICE READING WELDS Train the visual skills that are difficult to learn from notes alone. Work through five generated gauge modes: • Fillet leg size • Convexity and concavity • Groove reinforcement • Undercut depth • Discontinuity identification Each round gives you a new weld to read and immediate feedback. STUDY 420 QUESTIONS ACROSS 9 DOMAINS Build confidence in welding processes, heat control, metallurgy, NDT, weld examination, welding math, safety, terminology, and inspector duties. Review worked explanations and focus practice on the domains that need more attention. PRACTICE UNDER THE CLOCK Use the 46-question, 60-minute simulation to develop pacing and see your results by domain. GaugePass is a study tool, not a reproduction of the official exam. REMEMBER 200 KEY TERMS Use the built-in flashcard deck with Leitner spaced repetition. Cards you know return less often; missed cards come back sooner. CARRY A PRACTICAL REFERENCE Browse 140+ focused pages covering weld symbols, filler metals, discontinuities, welding math, processes, and nondestructive testing. GaugePass does not provide certification, replace the applicable code books, or guarantee an exam result. Always verify technical decisions against the standards and documents that apply to your work. Not affiliated with or endorsed by the American Welding Society. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

NDT Cert Study4 screens
Welding Study Guide4 screens

Verdict

The call

NDT Cert Study and Welding Study Guide are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. NDT Cert Study sells 9 one-off in-app purchases and Welding Study Guide sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
NDT Cert Study versus Welding Study Guide: the parameters behind the verdict, then further details
ParameterNDT Cert StudyWelding Study Guide
PriceFreeFree
Update frequencyEvery 2 months—
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details — not scored
Size35 MB48 MB
Age rating4+17+
DeveloperSimon ShihMobin Akhter

In-app purchases

9 purchases

NDT Cert Study

One-time9
  • CGSB / MT Level I$9.99
  • CGSB / RT Level I$9.99
  • CGSB / PT Level II$9.99
Show 6 more
  • CGSB / PT Level I$9.99
  • CGSB / RT Level II$9.99
  • CGSB / UT Level II$9.99
  • CGSB / UT Level I$9.99
  • CGSB / PAUT Level I$9.99
  • CGSB / PAUT Level II$9.99
3 purchases

Welding Study Guide

Subscriptions2
  • GaugePass Weekly$3.997 Days
  • GaugePass Annual$29.991 Year
One-time1
  • GaugePass Lifetime$59.99

Questions

Is NDT Cert Study free?
NDT Cert Study is free to download, with in-app purchases available.
Is Welding Study Guide free?
Welding Study Guide is free to download, with in-app purchases available.
Do NDT Cert Study or Welding Study Guide have ads?
Neither NDT Cert Study nor Welding Study Guide shows ads.

Other comparisons