# 1000digit Calc vs Math Sphere

The clearest difference is update cadence: 1000digit Calc at weekly against Math Sphere's every 3 weeks. Math Sphere's advantage is 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.

1000digit Calc ships an update weekly, Math Sphere every 3 weeks. The most recent releases landed on October 1, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 1000digit Calc | Math Sphere |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 5 MB | 25 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yukihiro Shioya](https://appshunter.io/developer/1565306192) | [otsuki hayato](https://appshunter.io/developer/1828600192) |

## What reviewers say

### 1000digit Calc

[App page](https://appshunter.io/ios/app/1000digit-calc/id6463856899)

**Features:** macOS Compatibility

**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 1000digit Calc free?

1000digit Calc 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 1000digit Calc or Math Sphere have ads?

Neither 1000digit Calc nor Math Sphere shows ads.

### Which is updated more often, 1000digit Calc or Math Sphere?

1000digit Calc ships an update weekly, and Math Sphere every 3 weeks. Most recently, 1000digit Calc was updated on October 1, 2026 and Math Sphere on October 8, 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.*