# Note by Chat & Send Files vs Calculator AI

The clearest difference is in-app purchases: Note by Chat & Send Files at none against Calculator AI's 2. Note by Chat & Send Files also leads on iOS requirement (15.1 vs 17.0). Calculator AI's advantage is update cadence (every 8 days vs every 11 months). On price, ads and device support there is nothing between them.

Both are free to download. Calculator AI sells 2 in-app purchases, starting at $9.99 per 7 days. Note by Chat & Send Files asks for nothing beyond the download.

Note by Chat & Send Files ships an update every 11 months, Calculator AI every 8 days. The most recent releases landed on September 19, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Note by Chat & Send Files | Calculator AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 8 days** |
| Size | 26 MB | 11 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Shotdoor](https://appshunter.io/developer/530049796) | [Aya Labs B.V.](https://appshunter.io/developer/1505783699) |

## What reviewers say

### Note by Chat & Send Files

[App page](https://appshunter.io/ios/app/note-by-chat-and-send-files/id6740557621)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calculator AI

[App page](https://appshunter.io/ios/app/calculator-ai-math-solver/id6747848256)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator AI Pro | $9.99 | per 7 days |
| Calculator AI Pro | $9.99 | per 7 days |


## Frequently asked questions

### Is Note by Chat & Send Files free?

Note by Chat & Send Files is free to download, with no in-app purchases.

### Is Calculator AI free?

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

### Do Note by Chat & Send Files or Calculator AI have ads?

Neither Note by Chat & Send Files nor Calculator AI shows ads.

### Which is updated more often, Note by Chat & Send Files or Calculator AI?

Note by Chat & Send Files ships an update every 11 months, and Calculator AI every 8 days. Most recently, Note by Chat & Send Files was updated on September 19, 2026 and Calculator AI on October 10, 2026.

---

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