Comparison

Math Learner vs API653 Storage Tank Inspector

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

Head to head
About

Math Learner

Engage in fun, game-based math practice with thousands of lessons and exercises. This app uses proven methodologies to build foundational skills and accelerate progress, offering an interactive experience with high-accuracy digit recognition. It provides unlimited offline access and is constantly updated with new content for all levels.

Highlights
  • Thousands of exercises
  • Game-based learning strategies
  • Unlimited online/offline use
  • High-accuracy digit recognition
  • Constant content updates
  • Step-by-step lessons
Features
Read full description

Have fun while learning and practicing Math with the original Math Learner app! Downloaded by millions of users, we use a proven methodology based on the world's top programs in order to build foundational Math skills and fast-track your progress. Parents, work through thousands of lessons step-by-step! Features: - Thousands of exercises and multiple game-based learning strategies - Unlimited use, online or offline - No ads! - High-accuracy digit recognition technology creates an unique interactive experience. - Constant updates with new content for all levels! App subscription: You can subscribe for access to the full list of Math lessons. Payment will be charged to iTunes Account at confirmation of purchase. You will be able to do all exercises for the duration of the subscription. Subscription automatically renews for the same price and duration period as the original "one week"/"one month"/"one year" package unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period at the cost of the chosen package (weekly, monthly or yearly package). Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's iTunes Account Settings after purchase. No cancellation of the current subscription is allowed during active subscription period. You may cancel a subscription during its free trial period via the subscription setting though your iTunes account. This must be done 24 hours before the end of the subscription period to avoid being charged. Please visit: http://support.apple.com/kb/ht4098 for more information. You may turn off the auto-renewal of your subscription via your iTunes Account Settings. However, you are not able to cancel the current subscription during its active period. Any unused portion of free-trial period, will be forfeited when the user purchases an app subscription. Links to our Terms of Service and Privacy Policy can be found below. Privacy Policy: https://www.fungames-forfree.com/app/legal/privacy?bundleId=com.fungames.mathapp&name=mathapp Terms of Use: https://www.fungames-forfree.com/app/legal/tos?bundleId=com.fungames.mathapp&name=mathapp * Prices are equal to the value that "Apple's App Store Pricing Matrix" determines as the equivalent of the subscription price in $ USD

About

API653 Storage Tank Inspector

Features
Read full description

Are you preparing for your API 653 Storage Tank Inspector certification exam? Equip yourself with the right tools and boost your confidence with the API 653 Storage Tank Inspector Practice Test app. Tailored to match the style and difficulty of the actual abc certification exams, this app offers everything you need to pass your exam. Key Features to Support Your Success - Three Exam Modes to Match Your Study Style: * Final Exam Mode: Simulate the real exam experience by answering a set of questions without feedback until the end. Receive a detailed score report, highlighting both correct and incorrect answers, so you can focus on areas needing improvement. * Practice Exam Mode: Immediate feedback with answers revealed after each question. Learn effectively as incorrect choices are marked in red and correct answers in green, allowing for a deeper understanding of the material. * Flashcard Exam Mode: Test your knowledge in a self-assessment format. Reveal answers at your own pace, perfect for strengthening recall and comprehension of key concepts. * Customizable Study Options: Study by Individual Categories: Concentrate on specific sections of the exam by choosing categories tailored to your needs. Allocate your study time more effectively to reinforce weaker areas. * Customizable Time Limits: Practice at your own speed or challenge yourself with real exam constraints. Adjust the time limits for each exam mode to simulate exam pressure or allow for thoughtful reflection. * Comprehensive and Up-to-Date Question Bank: Gain access to a robust set of questions covering essential topics. * Performance Tracking: Monitor your progress and identify strengths and areas for improvement with detailed performance reports. Tailor your study strategy based on your readiness and watch your scores improve over time. Who Should Use This App? * Students: Master the key concepts needed to pass the certification exam and achieve your educational goals. * Certification Candidates: Practice under exam conditions and track your progress to ensure you’re ready for test day. • API 653 Storage Tank Inspector Practice Test: • Auto-renewable subscription; • 1 month ($9,00); • Payment will be charged to iTunes Account at confirmation of purchase; • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period; • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal; • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase; • Privacy police: https://api653storagetankinspectorpracticetest.app.ambitionz.co/privacy • Terms of use: https://api653storagetankinspectorpracticetest.app.ambitionz.co/terms • Apple’s Standard End User License Agreement (EULA): https://apple.com/legal/internet-services/itunes/dev/stdeula • Customizable Time Limits: Practice at your own pace or simulate real exam conditions by setting a custom time limit for each exam. This feature gives you full control over your study environment.

Screenshots

Math Learner3 screens
API653 Storage Tank Inspector4 screens

Verdict

The call

The clearest difference is ads: API653 Storage Tank Inspector at none against Math Learner's shown. Math Learner's advantage is update cadence (every 2 weeks vs every 5 months) and iOS requirement (11.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Math Learner sells 7 in-app purchases, starting at $7.99 per 7 days and API653 Storage Tank Inspector sells 1 in-app purchase, starting at $9.00 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Math Learner ships an update every 2 weeks, API653 Storage Tank Inspector every 5 months. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.

Scorecard3 real differences · 6 level
Math Learner versus API653 Storage Tank Inspector: the parameters behind the verdict, then further details
ParameterMath LearnerAPI653 Storage Tank Inspector
PriceFreeFree
Rating4.6 (121K ratings) — better—
Number of ratings121K — better—
Update frequencyEvery 2 weeks — betterEvery 5 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size258 MB3 MB
Age rating4+4+
DeveloperWildlife StudiosAmbitionz Apps

Bugs and requests

Math Learner

Reported bugs

2 issues
  • Incorrect answers registered for correct work
  • Persistent subscription charges even after cancellation

Requested features

3 requests
  • More advanced math content
  • Option to skip beginner levels
  • Free version with limited features

API653 Storage Tank Inspector

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Math Learner

Subscriptions7
  • Math Plus3 Days trial$7.997 Days
  • Math Plus3 Days trial$9.997 Days
  • Math Plus3 Days trial$11.997 Days
Show 4 more
  • Math Plus$11.997 Days
  • Math Plus3 Days trial2 variants$24.991 Month
  • Math Plus$39.991 Month
  • Math Plus3 Days trial2 variants$99.991 Year
1 purchases

API653 Storage Tank Inspector

Subscriptions1
  • API 653 Storage Tank Inspector$9.001 Month

Questions

Is Math Learner free?
Math Learner is free to download, with in-app purchases available.
Is API653 Storage Tank Inspector free?
API653 Storage Tank Inspector is free to download, with in-app purchases available.
Do Math Learner or API653 Storage Tank Inspector have ads?
Math Learner shows ads; API653 Storage Tank Inspector does not.
Which is updated more often, Math Learner or API653 Storage Tank Inspector?
Math Learner ships an update every 2 weeks, and API653 Storage Tank Inspector every 5 months. Most recently, Math Learner was updated on October 24, 2026 and API653 Storage Tank Inspector on October 18, 2026.

Other comparisons