Comparison

NDT Events vs API 571 Helpmate

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

Head to head
About

NDT Events

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The British Institute of NDT's Events app is an essential mobile resource for those attending and planning to attend any BINDT event, including the annual NDT conference and exhibition, and the annual Condition Monitoring Conference and Exhibition. The app gives details of the full programme of the event and enables users to create their own personal schedule of sessions they wish to attend. It then sends a reminder in advance of the start of the session and also helps to avoid clashes. News postings help attendees keep up-to-date with session changes and other goings-on at the event and its venue. If an exhibition runs alongside the conference a list of exhibitors with descriptions helps the user to choose which stands to visit and thus optimise his or her time. The app easily enables users to get turn-by-turn directions to the venue, whether arriving on foot, rail or by car. BINDT’s Events app is a must-have free aid for the busy delegate who wants to maximise the value of his or her time at BINDT’s conferences and exhibitions. Additional images by storyset on Freepik (https://www.freepik.com)

About

API 571 Helpmate

Features
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Prepare for your API 571 Corrosion and Materials certification with API 571 Helpmate, the ultimate study companion. This app provides the essential knowledge base for the current Body of Knowledge (BOK), ensuring you're fully up-to-date on the latest requirements. With over 500 questions, API 571 Helpmate offers powerful features designed to optimize your study experience. Track your progress, bookmark challenging questions, and tailor your learning to your individual needs. This allows you to pinpoint areas for improvement and solidify your understanding of critical concepts. Study anytime, anywhere, and build the confidence you need to ace your exam. API 571 Helpmate is built to help engineers, inspectors, and beginners achieve success, empowering you to learn without barriers. What You'll Gain: β€’ Accelerated Learning: Quickly grasp engineering codes and standards used in the petroleum and petrochemical industries. β€’ Exam Readiness: Develop a deeper understanding of API 571 certification exam questions and gain real-life exam experience. β€’ Up-to-Date Content: Access the latest API 571 Body of Knowledge (BOK) requirements. β€’ Increased Confidence: Boost your confidence for the actual exam and significantly improve your chances of passing. β€’ Efficient Preparation: Maximize your success on your first attempt while minimizing the impact on your working schedule. β€’ Flexible Study: Enjoy 24/7 access to learn at your own pace, place, and convenience. β€’ Cross-Platform Access: Study seamlessly from your tablet or smartphone. β€’ Cost Savings: Eliminate dependency on expensive API 571 exam preparation classroom courses. β€’ Categorized Questions: Explore questions from the API RP 571 Body of Knowledge (BOK) grouped by: o Low-Temperature Corrosion o Elevated-Temperature Corrosion o Metallurgical and Mechanical Damage o Environment-Assisted Cracking o Other Mechanisms Important Notes: β€’ While this app does not contain actual exam questions (as they frequently change), it provides an abundance of frequently asked or similar questions to prepare you thoroughly. β€’ API 571 Helpmate cannot grant you API certification. However, it is an invaluable tool for engineers, engineering students, and designers to quickly learn the industry's essential codes and standards. Developed by Experts: This app is developed by authorized API certified inspectors who achieved success through a systematic self-learning approach, without relying on classroom or online courses. We believe in your potential and encourage you to begin your learning journey with API 571 Helpmate today. Every step you take will make you stronger, more skilled, more self-confident, and ultimately more successful. For more information, please visit https://engqa.com EULA : https://helpmateworld.com/about-us/

Screenshots

NDT Events4 screens
API 571 Helpmate4 screens

Verdict

The call

The clearest difference is in-app purchases: NDT Events at none against API 571 Helpmate's 1. NDT Events also leads on device support (4 vs 2). On price, update cadence, ads and iOS requirement there is nothing between them.

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

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

Both are free to download. API 571 Helpmate sells 1 in-app purchase, starting at $29.00 per year. NDT Events asks for nothing beyond the download.

UpkeepUpdate frequency

NDT Events ships an update every 5 months, API 571 Helpmate every 8 months. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.

Scorecard2 real differences Β· 4 level
NDT Events versus API 571 Helpmate: the parameters behind the verdict, then further details
ParameterNDT EventsAPI 571 Helpmate
PriceFreeFree
Update frequencyEvery 5 months β€” betterEvery 8 months
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPod, Mac β€” betteriPhone, iPad
Requires iOS15.0 β€” better16.0
Further details β€” not scored
Size7 MB34 MB
Age rating4+4+
DeveloperThe British Institute of Non-Destructive TestingAustenite Pty Ltd

In-app purchases

None

NDT Events

No in-app purchases

1 purchases

API 571 Helpmate

Subscriptions1
  • 12 Months Plan$29.001 Year

Questions

Is NDT Events free?
NDT Events is free to download, with no in-app purchases.
Is API 571 Helpmate free?
API 571 Helpmate is free to download, with in-app purchases available.
Do NDT Events or API 571 Helpmate have ads?
Neither NDT Events nor API 571 Helpmate shows ads.
Which is updated more often, NDT Events or API 571 Helpmate?
NDT Events ships an update every 5 months, and API 571 Helpmate every 8 months. Most recently, NDT Events was updated on October 10, 2026 and API 571 Helpmate on October 15, 2026.

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