# RallyOdoTimer vs Blackboard

The clearest difference is review sentiment: RallyOdoTimer at 100% against Blackboard's 0%. RallyOdoTimer also leads on rating (5.0 vs 2.0) and in-app purchases (none vs 1). Blackboard's advantage is update cadence (every 4 months vs every 13 months). On price, ratings volume and device support there is nothing between them.

Both are free to download. Blackboard sells 1 one-off in-app purchase. RallyOdoTimer asks for nothing beyond the download.

RallyOdoTimer holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 100% of RallyOdoTimer's written reviews are positive against 0% of Blackboard's.

RallyOdoTimer ships an update every 13 months, Blackboard every 4 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | RallyOdoTimer | Blackboard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/rallyodotimer/id925468288/reviews)** | [2.0 (2 ratings)](https://appshunter.io/ios/app/blackboard-stopwatch/id1470227478/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 13 months | **Every 4 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 11 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


### Blackboard

[App page](https://appshunter.io/ios/app/blackboard-stopwatch/id1470227478)

A straightforward stopwatch app featuring oversized digits for easy visibility. It offers single-button control for starting, stopping, and resetting. With optional Bluetooth integration and a photocell, it can function as a race display, expanding its utility.

**Highlights:** Oversized digits, Single-button control (start, stop, reset), Bluetooth device integration, Photocell compatibility, External Bluetooth button support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $2.99 | one-time |


## Frequently asked questions

### Is RallyOdoTimer free?

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

### Is Blackboard free?

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

### Which has better reviews, RallyOdoTimer or Blackboard?

RallyOdoTimer is rated higher. RallyOdoTimer averages 5.0 out of 5 from 2 ratings, while Blackboard averages 2.0 from 2 ratings.

### Do RallyOdoTimer or Blackboard have ads?

Blackboard shows ads; RallyOdoTimer does not.

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

RallyOdoTimer ships an update every 13 months, and Blackboard every 4 months. Most recently, RallyOdoTimer was updated on November 1, 2026 and Blackboard on November 3, 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.*