Ratio Calc! vs AliveDrive Race
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ratio Calc!
This app helps radio control car racers calculate their final drive ratio and rollout. Easily select your car, input gear sizes, and get instant results. It also offers charts and saves favorite cars for quick access.
- Calculate Final Drive Ratio (FDR)
- Calculate Rollout with tire diameter
- Filter cars by manufacturer and model
- Save favorite cars
- Select measurement units (imperial/metric)
- Select gear pitch
- View ratio and rollout charts
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Ratio Calc is a quick and easy tool for radio control car racers to use trackside. Knowing your final drive ratio (FDR) is very useful for comparison with other racers to determine if your car is geared correctly. It lets you quickly select your car by filtering on manufacturer and model. Select your pinion and spur size and the FDR is displayed. Tyre diameter can also be entered to calculate your rollout. Ratio and roll out charts are also available which plot pinion and spur gear combinations to create very handy reference tables. - Save your favourite cars for quick access - Select measurement units (imperial/metric) - Select your preferred gear pitch, alternative ratios in other pitches will be shown - Over 2000 cars/variants in the database which is updated regularly
AliveDrive Race
Analyze your driving performance with recorded data. Import and sync recordings, compare laps with detailed statistics, and review your drives with side-by-side video playback and GPS mapping. Improve your racing line and take your driving skills to the next level.
- Import and sync PDR recordings
- Analyze lap performance
- Compare laps with statistics
- Side-by-side video playback
- 10Hz GPS data on aerial maps
- Cloud sync for data and video
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Import, sync and analyse your PDR (Performance Data Recorder) recordings with AliveDrive Race. Whether you’re a seasoned veteran, or you're on your first track day, use AliveDrive Race to help take your driving to the next level. IMPORT & SYNC Import your PDR recordings from your SD card to your mobile device, the app shows you how. Sync your vehicle data to your personal cloud account. Use your favourite cloud storage provider to sync your video files too, so you can view your outings with video across all your devices. ANALYSE & COMPARE Select laps from one or two outings to analyse your performance. Easily pick out interesting moments with charts. Identify your best laps with lap-by-lap statistics. Relive your drives with side-by-side video playback. Compare and improve your racing line with 10Hz GPS data displayed on aerial maps.
Screenshots
Verdict
The clearest difference is review sentiment: Ratio Calc! at 88% against AliveDrive Race's 50%. Ratio Calc! also leads on ads (none vs shown) and rating (4.5 vs 4.2). AliveDrive Race's advantage is in-app purchases (none vs 4) and update cadence (monthly vs every 4 months). On price 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. Ratio Calc! sells 4 one-off in-app purchases. AliveDrive Race asks for nothing beyond the download.
Ratio Calc! holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: Ratio Calc! has 26 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 88% of Ratio Calc!'s written reviews are positive against 50% of AliveDrive Race's.
Ratio Calc! ships an update every 4 months, AliveDrive Race monthly. Both last shipped on October 29, 2026.
| Parameter | Ratio Calc! | AliveDrive Race |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (26 ratings) — better | 4.2 (5 ratings) |
| Positive reviews | 87.5% of reviews — better | 50.0% of reviews |
| Number of ratings | 26 — better | 5 |
| Update frequency | Every 4 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 69 MB | 264 MB |
| Age rating | 4+ | 4+ |
| Developer | David Mills | Cosworth Electronics Limited |
Customer experience
Ratio Calc!
AliveDrive Race
Bugs and requests
Ratio Calc!
Reported bugs
5 issues- Cannot adjust tyre sizes in latest version
- Cannot adjust gear ratio in latest version
- Bug on iPad: 'done' button missing after setting pinion/spur
- Removed notes feature in latest update
- Removed ability to save same vehicle twice in latest update
Requested features
13 requests- Add Mod 1 pinions and spurs
- Add support for 1:8 e-buggies
- Reintroduce notes feature
- Reintroduce ability to save same vehicle twice
- Add iCloud backup or import/export feature
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- Add option to attach setup sheets/track data
- Add input for battery used and motor specs
- Add speed chart for comparison
- Allow selection of gear pitch for each car
- Update app to include new kits
- Add more car models
- Divide Asphalt into 1:12 and 1:10 categories
- Add watch app
AliveDrive Race
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Ratio Calc!
- Nice Tip$0.99
- Generous Tip$2.99
- Mega Tip$4.99
Show 1 moreShow fewer
- Insane Tip$9.99
AliveDrive Race
No in-app purchases
Questions
Is Ratio Calc! free?
Is AliveDrive Race free?
Which has better reviews, Ratio Calc! or AliveDrive Race?
Do Ratio Calc! or AliveDrive Race have ads?
Which is updated more often, Ratio Calc! or AliveDrive Race?
Other comparisons
