# MathArena Junior vs Lenny

MathArena Junior and Lenny are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. MathArena Junior sells 3 in-app purchases, starting at $6.99 per month and Lenny sells 2 in-app purchases, starting at $179.99 per year. Whichever you choose, the download price is not the number that matters.

MathArena Junior ships an update every 2 weeks, Lenny weekly. The most recent releases landed on September 29, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | MathArena Junior | Lenny |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 111 MB | 12 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MatheArena GmbH](https://appshunter.io/developer/1424250411) | [Uschi Muehlbacher](https://appshunter.io/developer/6793465025) |

## What reviewers say

### MathArena Junior

[App page](https://appshunter.io/ios/app/matharena-junior/id6443734276)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MathArena Monthly Subscription | $6.99 | per month |
| MathArena Annual Subscription | $22.99 | per year |
| MatheArena Junior One Time | $69.99 | one-time |


### Lenny

[App page](https://appshunter.io/ios/app/lenny-lean-and-learn/id6793465023)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Jahreszugang mit 100 Stunden | $179.99 | per year |
| 10 zusätzliche Lernstunden | $22.99 | one-time |


## Frequently asked questions

### Is MathArena Junior free?

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

### Is Lenny free?

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

### Do MathArena Junior or Lenny have ads?

Neither MathArena Junior nor Lenny shows ads.

### Which is updated more often, MathArena Junior or Lenny?

MathArena Junior ships an update every 2 weeks, and Lenny weekly. Most recently, MathArena Junior was updated on September 29, 2026 and Lenny on October 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*