# CSIT vs CS Pro Note

The clearest difference is in-app purchases: CSIT at none against CS Pro Note's 1. CSIT also leads on iOS requirement (11.0 vs 13.0). CS Pro Note's advantage is update cadence (monthly vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. CS Pro Note sells 1 one-off in-app purchase. CSIT asks for nothing beyond the download.

CSIT ships an update every 5 months, CS Pro Note monthly. Both last shipped on September 17, 2026.

## The numbers

| Metric | CSIT | CS Pro Note |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Size | 25 MB | 60 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MTA SZTAKI](https://appshunter.io/developer/381282454) | [Jeffery Galen Reed](https://appshunter.io/developer/1819964083) |

## What reviewers say

### CSIT

[App page](https://appshunter.io/ios/app/csit/id959873557)

**Features:** macOS Compatibility

**In-app purchases:** none


### CS Pro Note

[App page](https://appshunter.io/ios/app/cs-pro-note/id6749539002)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CS Pro Note Lifetime | $7.99 | one-time |


## Frequently asked questions

### Is CSIT free?

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

### Is CS Pro Note free?

CS Pro Note is free to download, with in-app purchases available.

### Do CSIT or CS Pro Note have ads?

Neither CSIT nor CS Pro Note shows ads.

### Which is updated more often, CSIT or CS Pro Note?

CSIT ships an update every 5 months, and CS Pro Note monthly. Most recently, CSIT was updated on September 17, 2026 and CS Pro Note on September 17, 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.*