# RallyOdoTimer vs C4Timekeeper

The clearest difference is in-app purchases: RallyOdoTimer at none against C4Timekeeper's 3. RallyOdoTimer also leads on iOS requirement (8.3 vs 16.0). C4Timekeeper's advantage is update cadence (every 2 months vs every 13 months). On price, ads and device support there is nothing between them.

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

RallyOdoTimer ships an update every 13 months, C4Timekeeper every 2 months. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | RallyOdoTimer | C4Timekeeper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/rallyodotimer/id925468288/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 5 MB | 10 MB |
| Requires iOS | **8.3** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Clarence Westberg](https://appshunter.io/developer/733915609) | [Filippo Gozza](https://appshunter.io/developer/954580932) |

## What reviewers say

### RallyOdoTimer

[App page](https://appshunter.io/ios/app/rallyodotimer/id925468288)

This GPS-based rally odometer offers Halda Twinmaster-like functionality for tracking main and auxiliary mileage. It features adjustable counters, interval timers, and customizable settings for units and timer behavior. Swipe controls prevent accidental button presses.

**Highlights:** Dual mileage counters (main and auxiliary), Adjustable mileage increments, Interval timers with customizable settings, GPS monitoring with accuracy display, Swipe controls for reverse and stop buttons, KM/Miles unit selection

**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 RallyOdoTimer free?

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

### Is C4Timekeeper free?

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

### Do RallyOdoTimer or C4Timekeeper have ads?

Neither RallyOdoTimer nor C4Timekeeper shows ads.

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

RallyOdoTimer ships an update every 13 months, and C4Timekeeper every 2 months. Most recently, RallyOdoTimer was updated on October 11, 2026 and C4Timekeeper on October 8, 2026.

---

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