# MindCalc Arithmetic Trainer vs 11x13

The clearest difference is update cadence: MindCalc Arithmetic Trainer at every 21 months against 11x13's every 48 months. On price, review sentiment, ads and in-app purchases there is nothing between them.

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

MindCalc Arithmetic Trainer ships an update every 21 months, 11x13 every 48 months. The most recent releases landed on August 27, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | MindCalc Arithmetic Trainer | 11x13 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (12 ratings)](https://appshunter.io/ios/app/mindcalc-arithmetic-trainer/id306974064/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 21 months** | Every 48 months |
| Monetization | Free | Free |
| Size | 4 MB | 2 MB |
| Requires iOS | **15.4** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Peter Schorn](https://appshunter.io/developer/291182088) | [Matthias Hennemeyer](https://appshunter.io/developer/352918135) |

## What reviewers say

### MindCalc Arithmetic Trainer

[App page](https://appshunter.io/ios/app/mindcalc-arithmetic-trainer/id306974064)

Sharpen your mental math skills by solving equations where you must select two numbers to match a given result and operator. Earn points for speed, but beware of mistakes that reset your progress. Challenge a friend to a duel of arithmetic prowess.

**Highlights:** Equation solving with number selection, Speed-based scoring, Mistake penalty, High difficulty mode, Two-player competitive mode

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is MindCalc Arithmetic Trainer free?

MindCalc Arithmetic Trainer is free to download, with no in-app purchases.

### Is 11x13 free?

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

### Do MindCalc Arithmetic Trainer or 11x13 have ads?

Neither MindCalc Arithmetic Trainer nor 11x13 shows ads.

### Which is updated more often, MindCalc Arithmetic Trainer or 11x13?

MindCalc Arithmetic Trainer ships an update every 21 months, and 11x13 every 48 months. Most recently, MindCalc Arithmetic Trainer was updated on August 27, 2026 and 11x13 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.*