# Unit Converter Superior vs Math Sphere

The clearest difference is update cadence: Math Sphere at every 3 weeks against Unit Converter Superior's every 21 months. Math Sphere also leads on iOS requirement (13.0 vs 15.0). 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.

Unit Converter Superior ships an update every 21 months, Math Sphere every 3 weeks. Both last shipped on October 8, 2026.

## The numbers

| Metric | Unit Converter Superior | Math Sphere |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 3 weeks** |
| Size | 58 MB | 25 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Felix Peralta](https://appshunter.io/developer/1546086459) | [otsuki hayato](https://appshunter.io/developer/1828600192) |

## What reviewers say

### Unit Converter Superior

[App page](https://appshunter.io/ios/app/unit-converter-superior/id1630757981)

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

**In-app purchases:** none


### Math Sphere

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter Superior free?

Unit Converter Superior is free to download, with no in-app purchases.

### Is Math Sphere free?

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

### Do Unit Converter Superior or Math Sphere have ads?

Neither Unit Converter Superior nor Math Sphere shows ads.

### Which is updated more often, Unit Converter Superior or Math Sphere?

Unit Converter Superior ships an update every 21 months, and Math Sphere every 3 weeks. Most recently, Unit Converter Superior was updated on October 8, 2026 and Math Sphere on October 8, 2026.

---

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