# 11x13 vs Baselproblem

The clearest difference is update cadence: Baselproblem at every 11 months against 11x13's every 48 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

11x13 ships an update every 48 months, Baselproblem every 11 months. Both last shipped on September 10, 2026.

## The numbers

| Metric | 11x13 | Baselproblem |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 48 months | **Every 11 months** |
| Monetization | Free | — |
| Size | 2 MB | 0 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Matthias Hennemeyer](https://appshunter.io/developer/352918135) | [Andreas Horvath](https://appshunter.io/developer/1484572340) |

## What reviewers say

### 11x13

[App page](https://appshunter.io/ios/app/11x13/id1345978316)

This app offers daily math practice to improve number familiarity and overcome math reservations. It focuses on basic arithmetic operations with visual progress tracking through charts and grids. Daily practice sessions can enhance fundamental mathematical skills.

**Highlights:** Daily math practice, Basic arithmetic operations, Progress visualization, Personalized calculation levels, Leaderboard integration, Number range grids

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

**In-app purchases:** none


### Baselproblem

[App page](https://appshunter.io/ios/app/baselproblem/id1484572342)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 11x13 free?

11x13 is free to download, with no in-app purchases.

### Is Baselproblem free?

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

### Do 11x13 or Baselproblem have ads?

Neither 11x13 nor Baselproblem shows ads.

### Which is updated more often, 11x13 or Baselproblem?

11x13 ships an update every 48 months, and Baselproblem every 11 months. Most recently, 11x13 was updated on September 10, 2026 and Baselproblem on September 10, 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.*