# C4Timekeeper vs TM550

The clearest difference is in-app purchases: TM550 at none against C4Timekeeper's 3. TM550 also leads on iOS requirement (12.0 vs 16.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. C4Timekeeper sells 3 one-off in-app purchases. TM550 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 26, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | C4Timekeeper | TM550 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 10 MB | 42 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Filippo Gozza](https://appshunter.io/developer/954580932) | [ITS-CHRONO](https://appshunter.io/developer/1278336293) |

## What reviewers say

### C4Timekeeper

[App page](https://appshunter.io/ios/app/c4timekeeper/id1003021684)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version for one month | $4.99 | one-time |
| Full version for 6 months | $8.99 | one-time |
| Full version for one year | $13.99 | one-time |


### TM550

[App page](https://appshunter.io/ios/app/tm550/id1659378867)

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

**In-app purchases:** none


## Frequently asked questions

### Is C4Timekeeper free?

C4Timekeeper is free to download, with in-app purchases available.

### Is TM550 free?

TM550 is free to download, with no in-app purchases.

### Do C4Timekeeper or TM550 have ads?

Neither C4Timekeeper nor TM550 shows ads.

### Which is updated more often, C4Timekeeper or TM550?

C4Timekeeper ships an update every 2 months, and TM550 every 2 months. Most recently, C4Timekeeper was updated on October 26, 2026 and TM550 on November 7, 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.*