# Calculus AI vs Moshui

The clearest difference is update cadence: Moshui at every 2 days against Calculus AI's every 4 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Calculus AI sells 2 in-app purchases, starting at $4.99 per 7 days and Moshui sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Calculus AI ships an update every 4 weeks, Moshui every 2 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Calculus AI | Moshui |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 days** |
| Size | 61 MB | 45 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tat Wah Chan](https://appshunter.io/developer/1832432621) | [Pickmy AI](https://appshunter.io/developer/1869516043) |

## What reviewers say

### Calculus AI

[App page](https://appshunter.io/ios/app/calculus-ai-math-solver/id6814129703)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculus AI - Smart Solver Weekly | $4.99 | per 7 days |
| Calculus AI - Smart Solver Yearly | $29.99 | per year |


### Moshui

[App page](https://appshunter.io/ios/app/moshui-dse-essay-feedback/id6817254238)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version 90-Day Pass | $19.99 | one-time |
| 90-day Pro Offer | $19.99 | one-time |


## Frequently asked questions

### Is Calculus AI free?

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

### Is Moshui free?

Moshui is free to download, with in-app purchases available.

### Do Calculus AI or Moshui have ads?

Neither Calculus AI nor Moshui shows ads.

### Which is updated more often, Calculus AI or Moshui?

Calculus AI ships an update every 4 weeks, and Moshui every 2 days. Most recently, Calculus AI was updated on October 29, 2026 and Moshui on October 24, 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.*