# Scientific Timer vs OCR Server

The clearest difference is price: OCR Server at Free against Scientific Timer's $0.99. OCR Server also leads on update cadence (every 4 days vs every 16 months). Scientific Timer's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

OCR Server is free to download; Scientific Timer costs $0.99 up front. OCR Server sells 1 one-off in-app purchase. Scientific Timer asks for nothing beyond the download.

Scientific Timer ships an update every 16 months, OCR Server every 4 days. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Scientific Timer | OCR Server |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 4 days** |
| Size | 8 MB | 19 MB |
| Requires iOS | **18.0** | 18.4 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Stephane Boutet](https://appshunter.io/developer/1794014850) | [Wei-Cheng Ling](https://appshunter.io/developer/1155984309) |

## What reviewers say

### Scientific Timer

[App page](https://appshunter.io/ios/app/scientific-timer/id6741395405)

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

**In-app purchases:** none


### OCR Server

[App page](https://appshunter.io/ios/app/ocr-server/id6749533041)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $4.99 | one-time |


## Frequently asked questions

### Is Scientific Timer free?

Scientific Timer costs $0.99, with no in-app purchases.

### Is OCR Server free?

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

### Do Scientific Timer or OCR Server have ads?

Neither Scientific Timer nor OCR Server shows ads.

### Which is updated more often, Scientific Timer or OCR Server?

Scientific Timer ships an update every 16 months, and OCR Server every 4 days. Most recently, Scientific Timer was updated on November 8, 2026 and OCR Server on October 30, 2026.

---

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