# Mathly vs Basis21

The clearest difference is update cadence: Basis21 at every 2 days against Mathly's every 2 weeks. Basis21 also leads on iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Mathly sells 2 in-app purchases, starting at $2.99 per month and Basis21 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Mathly ships an update every 2 weeks, Basis21 every 2 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Mathly | Basis21 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/mathly-math-games-and-puzzles/id6757649621/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | Freemium | — |
| Size | 31 MB | 14 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MoonSmoke UG](https://appshunter.io/developer/6814166501) | [VINCENT WAH KIT WONG](https://appshunter.io/developer/6782601296) |

## What reviewers say

### Mathly

[App page](https://appshunter.io/ios/app/mathly-math-games-and-puzzles/id6757649621)

Sharpen your mind with engaging math puzzles and games. Improve mental arithmetic, logic, concentration, and speed. Perfect for daily brain training sessions for all ages.

**Highlights:** Mental arithmetic training, Logic and problem-solving puzzles, Concentration and memory exercises, Speed and accuracy improvement, Multiple math games and challenges, Daily brain training sessions

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mathly Monthly | $2.99 | per month |
| Mathly Yearly | $22.99 | per year |


### Basis21

[App page](https://appshunter.io/ios/app/basis21-blackjack-trainer/id6787679130)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $19.99 | one-time |


## Frequently asked questions

### Is Mathly free?

Mathly is free to download, with in-app purchases available.

### Is Basis21 free?

Basis21 is free to download, with in-app purchases available.

### Do Mathly or Basis21 have ads?

Neither Mathly nor Basis21 shows ads.

### Which is updated more often, Mathly or Basis21?

Mathly ships an update every 2 weeks, and Basis21 every 2 days. Most recently, Mathly was updated on October 26, 2026 and Basis21 on October 25, 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.*