# Math Sphere vs Calc

The clearest difference is update cadence: Calc at every 2 weeks against Math Sphere's every 3 weeks. Math Sphere's advantage is iOS requirement (13.0 vs 18.0). 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.

Math Sphere ships an update every 3 weeks, Calc every 2 weeks. The most recent releases landed on September 7, 2026 and August 19, 2026 respectively.

## The numbers

| Metric | Math Sphere | Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calc-u-59/id6761413142/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 25 MB | 6 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [otsuki hayato](https://appshunter.io/developer/1828600192) | [Martin Erzberger](https://appshunter.io/developer/1889469770) |

## What reviewers say

### Math Sphere

[App page](https://appshunter.io/ios/app/math-sphere/id6749747366)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calc

[App page](https://appshunter.io/ios/app/calc-u-59/id6761413142)

Explore the inner workings of classic TI-59, TI-58, and TI-58C calculators. This tool offers cycle-accurate emulation, a debugger to inspect code and registers, and a functional paper tape printer recreation. Load and save programs using magnetic card emulation and state files.

**Highlights:** Cycle-accurate TMC0501 processor emulation, Integrated debugger for program and register inspection, Functional PC-100C paper tape printer recreation, Magnetic card reader for loading/saving programs, State file loading for instant machine configuration, Solid State Module support

**In-app purchases:** none


## Frequently asked questions

### Is Math Sphere free?

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

### Is Calc free?

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

### Do Math Sphere or Calc have ads?

Neither Math Sphere nor Calc shows ads.

### Which is updated more often, Math Sphere or Calc?

Math Sphere ships an update every 3 weeks, and Calc every 2 weeks. Most recently, Math Sphere was updated on September 7, 2026 and Calc on August 19, 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.*