Racing Slips vs TrackR Performance
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Racing Slips
Record and access your drag racing time slips digitally. Calculate density altitude to predict your next ET dial and eliminate the need for paper slips. View qualification, pairing, and ladder reports easily.
- Digital time slip recording
- Density altitude calculation
- ET dial prediction
- Qualification reports
- Pairing reports
- Ladder reports
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Use our app to view your Drag Racing Time Slips! Our app also record your density altitude at the time of your race so you can use the data to predict your next ET dial. No more paper to go through, all your racing time slips in the palm of your hand using your iPhone or iPad! Access all the qualification, pairing and ladder reports using our TimeSlip app! This app can be used at the Napierville Dragway Tracks in Québec. You can review our "Terms of Use" here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ You can review our "Privacy Policy" here: https://www.dynogeeks.com/privacy.html
TrackR Performance
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TrackR is the bracket racer's data logbook and dial-in predictor — built by racers, for racers. Log every pass in seconds, let TrackR learn your car, and walk up to the lanes knowing your number. Every ET prediction is backed by real math — no black box. PREDICT YOUR DIAL-IN • ET predictions from density altitude, your reference runs, and wind • See the breakdown behind every number: reference run + air + wind • Confidence grows the more you log • 1/8 and 1/4 mile kept separate — never mixed LOG RUNS FAST • Snap your timeslip and let TrackR read it for you • Automatic weather and density altitude at your track • Capture 60-foot, splits, MPH, reaction time, dial-in, and finish margin • Win/loss and round-by-round history KNOW YOUR CONDITIONS • Live density altitude for your track • Hourly ET forecast — find the best window to run • Weather what-if simulator: see how cooler air or a headwind moves your ET TRACK YOUR CAR • Full car profile and setup baselines • Maintenance reminders by runs, race days, calendar, and season • A setup snapshot saved with every pass MORE • 1,000+ US drag strips built in • Import Racepak data logger files • Clean, fast, dark interface made for the lanes Have a feature request or found a bug? The in-app feedback button comes straight to our team. Stop guessing. Make race-day calls from your own data.
Screenshots
Verdict
The clearest difference is in-app purchases: TrackR Performance at none against Racing Slips's 2. Racing Slips's advantage is update cadence (every 4 days vs every 3 weeks). On price, ads, device support and iOS requirement 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. Racing Slips sells 2 in-app purchases, starting at $4.99 per month. TrackR Performance asks for nothing beyond the download.
Racing Slips ships an update every 4 days, TrackR Performance every 3 weeks. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.
| Parameter | Racing Slips | TrackR Performance |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 19 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Stephan Monette | Dana Leonard |
In-app purchases
Racing Slips
- Premium Sharing$4.991 Month
- Annual Premium Access$8.991 Year
TrackR Performance
No in-app purchases
Questions
Is Racing Slips free?
Is TrackR Performance free?
Do Racing Slips or TrackR Performance have ads?
Which is updated more often, Racing Slips or TrackR Performance?
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