Comparison

Unlimited Math Problems vs API Concepts

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

Head to head
About

Unlimited Math Problems

Master your math skills with an app that generates an endless supply of practice problems. It offers various interaction types and covers multiple math subjects, suitable for all skill levels.

Highlights
  • Infinite problem generation
  • Keyboard, multiple choice, true/false inputs
  • Varied problem types per subject
  • Covers early math, arithmetic, fractions, number theory, decimals, trigonometry
  • Suitable for beginners and experienced users
Features
Read full description

Unlimited Math Problems is an app that helps you master your mathematical skills. This app takes a different approach by generating an infinite number of math problems instead of using a limited problem set, so you won't get bored. It contains different interactions, such as keyboard input, multiple choice, and true/false. You can choose from different variations of problems for each topic, making this app useful for both beginners and experienced users. The app contains the following subjects: Early math, Arithmetic, Fraction, Number theory, Decimal and Trigonometry. We're looking forward for your feedback and suggestions. https://www.facebook.com/mathproblemsapp Credits: - Correct animation by Chethan K V S at lottiefiles.com - Wrong animation by Chethan K V S at lottiefiles.com

About

API Concepts

Features
Read full description

API Concepts is an independent study app for building a stronger understanding of how APIs work, from beginner fundamentals to advanced design ideas. Use it to review for interviews, strengthen practical skills, or keep core concepts fresh through focused daily practice. Study across four topic categories: Fundamentals, Practical Skills, Common Pitfalls, and Advanced Concepts. The app includes 160 practice questions, and every question comes with an explanation so you can learn from each answer instead of only checking a score. Features: - FSRS spaced-repetition intervals for smarter review - Weak-point heatmap to spot topics that need work - Daily challenge for consistent practice - Mock exams for timed review sessions - Offline practice with no login required - Explanations for every question Independent study app for API Concepts practice. Not affiliated with, endorsed by, or sponsored by any company, certification body, exam operator, or vendor. All trademarks belong to their respective owners. Practice offline, no login required.

Screenshots

Unlimited Math Problems4 screens
API Concepts4 screens

Verdict

The call

The clearest difference is iOS requirement: API Concepts at 15.1 against Unlimited Math Problems's 17.0. On price, ads, 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 9 level
Unlimited Math Problems versus API Concepts: the parameters behind the verdict, then further details
ParameterUnlimited Math ProblemsAPI Concepts
PriceFreeFree
Rating4.5 (53 ratings) — better—
Positive reviews64.3% of reviews—
Number of ratings53 — better—
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size17 MB38 MB
Age rating4+4+
DeveloperMadiyar AitbayevAFTW LLC

In-app purchases

None

Unlimited Math Problems

No in-app purchases

None

API Concepts

No in-app purchases

Questions

Is Unlimited Math Problems free?
Unlimited Math Problems is free to download, with no in-app purchases.
Is API Concepts free?
API Concepts is free to download, with no in-app purchases.
Do Unlimited Math Problems or API Concepts have ads?
Neither Unlimited Math Problems nor API Concepts shows ads.

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