# ICP CheckIn vs IDC Timebook

The clearest difference is update cadence: IDC Timebook at every 6 weeks against ICP CheckIn's every 17 months. ICP CheckIn's advantage is iOS requirement (12.2 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ICP CheckIn ships an update every 17 months, IDC Timebook every 6 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | ICP CheckIn | IDC Timebook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 6 weeks** |
| Size | 58 MB | 39 MB |
| Requires iOS | **12.2** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Rosa Potti](https://appshunter.io/developer/1488100034) | [Integración y Desarrollo de equipos de Control, S.A.](https://appshunter.io/developer/1530918556) |

## What reviewers say

### ICP CheckIn

[App page](https://appshunter.io/ios/app/icp-checkin/id1488100035)

**Features:** macOS Compatibility

**In-app purchases:** none


### IDC Timebook

[App page](https://appshunter.io/ios/app/idc-timebook/id1597090417)

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

**In-app purchases:** none


## Frequently asked questions

### Is ICP CheckIn free?

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

### Is IDC Timebook free?

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

### Do ICP CheckIn or IDC Timebook have ads?

Neither ICP CheckIn nor IDC Timebook shows ads.

### Which is updated more often, ICP CheckIn or IDC Timebook?

ICP CheckIn ships an update every 17 months, and IDC Timebook every 6 weeks. Most recently, ICP CheckIn was updated on November 3, 2026 and IDC Timebook 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.*