# Unlimited Math Problems vs API Concepts

The clearest difference is price: API Concepts at Free against Unlimited Math Problems's $5.99. API Concepts also leads on iOS requirement (15.1 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

API Concepts is free to download; Unlimited Math Problems costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Unlimited Math Problems | API Concepts |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[4.5 (53 ratings)](https://appshunter.io/ios/app/unlimited-math-problems/id1244547440/reviews)** | — |
| Number of ratings | **53** | — |
| Positive reviews | 64.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Paid | — |
| Size | 17 MB | 38 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Madiyar Aitbayev](https://appshunter.io/developer/1229466587) | [AFTW LLC](https://appshunter.io/developer/1886356149) |

## What reviewers say

### Unlimited Math Problems

[App page](https://appshunter.io/ios/app/unlimited-math-problems/id1244547440)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### API Concepts

[App page](https://appshunter.io/ios/app/api-concepts/id6772290627)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Unlimited Math Problems free?

Unlimited Math Problems costs $5.99, 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*