# Study Chey vs Calculus AI

The clearest difference is in-app purchases: Study Chey at none against Calculus AI's 2. Study Chey also leads on update cadence (every 4 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Calculus AI sells 2 in-app purchases, starting at $4.99 per 7 days. Study Chey asks for nothing beyond the download.

Study Chey ships an update every 4 days, Calculus AI monthly. Both last shipped on October 16, 2026.

## The numbers

| Metric | Study Chey | Calculus AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Monthly |
| Size | 44 MB | 12 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Garimella Sri Vijaya Naga Praveen](https://appshunter.io/developer/1864936638) | [Chnini Ramdhane](https://appshunter.io/developer/1849606882) |

## What reviewers say

### Study Chey

[App page](https://appshunter.io/ios/app/study-chey/id6757381771)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calculus AI

[App page](https://appshunter.io/ios/app/calculus-ai-homework-helper/id6758545557)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Yearly Premium | $29.99 | per year |


## Frequently asked questions

### Is Study Chey free?

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

### Is Calculus AI free?

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

### Do Study Chey or Calculus AI have ads?

Neither Study Chey nor Calculus AI shows ads.

### Which is updated more often, Study Chey or Calculus AI?

Study Chey ships an update every 4 days, and Calculus AI monthly. Most recently, Study Chey was updated on October 16, 2026 and Calculus AI on October 16, 2026.

---

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