# 3Satz! Rechner vs Math Tutor AI

The clearest difference is in-app purchases: 3Satz! Rechner at none against Math Tutor AI's 8. Math Tutor AI's advantage is review sentiment (100% vs 67%) and update cadence (every 4 weeks vs every 25 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Math Tutor AI sells 8 in-app purchases, starting at $6.99 per month. 3Satz! Rechner asks for nothing beyond the download.

3Satz! Rechner ships an update every 25 months, Math Tutor AI every 4 weeks. The most recent releases landed on October 8, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | 3Satz! Rechner | Math Tutor AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/math-tutor-ai-solve-and-learn/id6504369911/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 4 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sebastian Ueberwolf](https://appshunter.io/developer/1313264509) | [Trisphere Apps LLC](https://appshunter.io/developer/1735581649) |

## What reviewers say

### 3Satz! Rechner

[App page](https://appshunter.io/ios/app/3satz-rechner/id1313264510)

This app simplifies complex calculations using the rule of three. It's designed for quick and accurate problem-solving in various contexts.

**Highlights:** Rule of three calculations, Accurate problem-solving, Simple interface, Supports iOS devices

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

**In-app purchases:** none


### Math Tutor AI

[App page](https://appshunter.io/ios/app/math-tutor-ai-solve-and-learn/id6504369911)

Solve a wide range of math problems, from basic arithmetic to advanced equations, using text input or by drawing. Features include a statistics calculator, unit converter, and the ability to save and load sessions. Advanced matrix and physics calculators are available via in-app purchase.

**Highlights:** Solve math problems via text or drawing, Statistics calculator, Unit conversion, Save and load sessions, Favorites for quick access, Matrix and physics calculators (IAP)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $6.99 | per month |
| Monthly Annual | $49.99 | per year |
| 20 AI Credits | $0.99 | one-time |
| Physics Calculator | $0.99 | one-time |
| Matrix Calculator | $0.99 | one-time |
| Keep it AD-Free | $0.99 | one-time |
| 60 AI Credits | $2.49 | one-time |
| 150 AI credits | $4.99 | one-time |


## Frequently asked questions

### Is 3Satz! Rechner free?

3Satz! Rechner is free to download, with no in-app purchases.

### Is Math Tutor AI free?

Math Tutor AI is free to download, with in-app purchases available.

### Do 3Satz! Rechner or Math Tutor AI have ads?

Neither 3Satz! Rechner nor Math Tutor AI shows ads.

### Which is updated more often, 3Satz! Rechner or Math Tutor AI?

3Satz! Rechner ships an update every 25 months, and Math Tutor AI every 4 weeks. Most recently, 3Satz! Rechner was updated on October 8, 2026 and Math Tutor AI on October 26, 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.*