# ADJ Online2 vs Mental Math Games App

The clearest difference is in-app purchases: ADJ Online2 at none against Mental Math Games App's 3. ADJ Online2 also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). Mental Math Games App's advantage is update cadence (every 6 weeks vs every 4 months). On price and ads there is nothing between them.

Both are free to download. Mental Math Games App sells 3 in-app purchases, starting at $5.99 per 7 days. ADJ Online2 asks for nothing beyond the download.

ADJ Online2 ships an update every 4 months, Mental Math Games App every 6 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ADJ Online2 | Mental Math Games App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (2 ratings)](https://appshunter.io/ios/app/mental-math-games-app/id6758712749/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | — | Freemium |
| Size | 26 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Aman Malhotra](https://appshunter.io/developer/1395482628) | [KERNELS INDUSTRY OF KNOWLEDGE, LLC](https://appshunter.io/developer/1874555640) |

## What reviewers say

### ADJ Online2

[App page](https://appshunter.io/ios/app/adj-online2/id6450939855)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mental Math Games App

[App page](https://appshunter.io/ios/app/mental-math-games-app/id6758712749)

Enhance your calculation speed and accuracy with daily math practice. This app offers structured training for essential operations, adjustable difficulty levels, and practical tips to build confidence with numbers.

**Highlights:** Daily math practice sessions, Adjustable difficulty levels, Progress tracking and statistics, Practical calculation tips, Addition, subtraction, multiplication, division training

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Games Premium | $5.99 | per 7 days |
| Math Games Premium | $5.99 | per 7 days |
| Math Games One-time | $119.99 | one-time |


## Frequently asked questions

### Is ADJ Online2 free?

ADJ Online2 is free to download, with no in-app purchases.

### Is Mental Math Games App free?

Mental Math Games App is free to download, with in-app purchases available.

### Do ADJ Online2 or Mental Math Games App have ads?

Neither ADJ Online2 nor Mental Math Games App shows ads.

### Which is updated more often, ADJ Online2 or Mental Math Games App?

ADJ Online2 ships an update every 4 months, and Mental Math Games App every 6 weeks. Most recently, ADJ Online2 was updated on October 27, 2026 and Mental Math Games App on October 24, 2026.

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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.*