FastR vs RallyRally
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FastR
Measure your vehicle's acceleration performance with this app. It automatically tests 0-60 and quarter-mile times with millisecond accuracy. Compete with others on a real-time leaderboard and save results for different car models.
- Hands-free, automated acceleration testing
- 0-60 and Quarter mile time measurement
- Millisecond accuracy
- Real-time user ranking
- Save times for different car models
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FastR is the #1 vehicle acceleration performance app in the game! Test your vehicle's 0-60 and Quarter mile times, in a hands-free, fully automated manner. You can also post your acceleration times to our leaderboard to earn bragging rights. - Features accuracy to the millisecond - Displays your rank amongst other users in real time - Lets you save acceleration times from different car models See how your vehicle's acceleration performance compares with others.
RallyRally
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RallyRally is the only app that lets you find tennis partners by watching how they play. RallyRally shows you video profiles of players so you can see their game before you connect. Swipe through videos, match with compatible players, and message to arrange a hit.
Screenshots
Verdict
The clearest difference is in-app purchases: RallyRally at none against FastR's 2. RallyRally also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. FastR sells 2 one-off in-app purchases. RallyRally asks for nothing beyond the download.
FastR ships an update every 5 months, RallyRally every 3 months. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.
| Parameter | FastR | RallyRally |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (319 ratings) — better | — |
| Positive reviews | 37.5% of reviews | — |
| Number of ratings | 319 — better | — |
| Update frequency | Every 5 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 52 MB |
| Age rating | 4+ | 12+ |
| Developer | Erhies Fekarurhobo | RallyRally Limited |
Bugs and requests
FastR
Reported bugs
10 issues- Network connection errors preventing vehicle selection
- Facebook login buffering and not connecting
- App fails to record and save acceleration times
- GPS speed readings lag significantly behind actual speed
- App crashes on launch or during use
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- Settings not saving properly without login
- Leaderboard functionality broken
- App doesn't start recording until vehicle is already at speed
- Inconsistent timing results on identical driving conditions
- Loading screen stuck on 'select vehicle' with persistent network errors
Requested features
10 requests- GPS-based auto-start feature instead of manual start button
- Audio cues for 'ready, set, go' countdown
- Alternative login methods beyond Facebook
- Save vehicle selection for future sessions
- Support for multiple vehicles per account
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- Social media sharing integration
- In-app instructions and user guide
- Add missing car models (Tesla Model Y, Russian models, high-spec variants)
- Allow custom vehicle entry if model not found
- Real-time sound feedback during acceleration test
RallyRally
Not enough reviews yet to summarise bugs or requests.
In-app purchases
FastR
- 10 Leaderboard Posts$3.99
- Unlock 1/4 Mile Timing$5.99
RallyRally
No in-app purchases
