# TSD Rally Clock vs C4Timekeeper

The clearest difference is price: C4Timekeeper at Free against TSD Rally Clock's $4.99. TSD Rally Clock's advantage is in-app purchases (none vs 3) and update cadence (fortnightly vs every 2 months). On ads and device support there is nothing between them.

C4Timekeeper is free to download; TSD Rally Clock costs $4.99 up front. C4Timekeeper sells 3 one-off in-app purchases. TSD Rally Clock asks for nothing beyond the download.

TSD Rally Clock ships an update fortnightly, C4Timekeeper every 2 months. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | TSD Rally Clock | C4Timekeeper |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Size | 1 MB | 10 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MSYapps](https://appshunter.io/developer/458482419) | [Filippo Gozza](https://appshunter.io/developer/954580932) |

## What reviewers say

### TSD Rally Clock

[App page](https://appshunter.io/ios/app/tsd-rally-clock/id979445821)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is TSD Rally Clock free?

TSD Rally Clock costs $4.99, with no in-app purchases.

### Is C4Timekeeper free?

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

### Do TSD Rally Clock or C4Timekeeper have ads?

Neither TSD Rally Clock nor C4Timekeeper shows ads.

### Which is updated more often, TSD Rally Clock or C4Timekeeper?

TSD Rally Clock ships an update fortnightly, and C4Timekeeper every 2 months. Most recently, TSD Rally Clock was updated on October 6, 2026 and C4Timekeeper on October 8, 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.*