The BangShift Billy vs Cecil Dragway
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
The BangShift Billy
Precisely control your diaphragm clutch engagement and slip time for drag racing. Optimize launches, reduce driveline damage, and improve ET with millisecond accuracy.
- Precise clutch engagement control
- Adjustable slip time (0-2.00 seconds)
- Millisecond accuracy
- Reduces driveline damage
- Improves ET
- Works with Bluetooth controller
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The BangShift Billy app works in conjunction with our Bluetooth controller and hydraulic manifold/valve assembly to allow a diaphragm clutch to be precisely engaged and slipped like an adjustable slipper clutch at the drag strip. With the app you can adjust the “bite” point of the clutch down to the millisecond and adjust the slip time from zero to 2.00 seconds. It will reduce damage to driveline components and reduce ET by allowing controlled, repeatable launches.
Cecil Dragway
Access your drag racing time slips digitally, eliminating the need for paper records. This app records density altitude to help predict your next ET dial. View qualification, pairing, and ladder reports directly on your iPhone or iPad.
- Digital time slip storage
- Density altitude recording
- 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 Cecil Dragway. 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
Screenshots
Verdict
The clearest difference is rating: The BangShift Billy at 5.0 against Cecil Dragway's 3.3. The BangShift Billy also leads on in-app purchases (none vs 2) and update cadence (every 3 weeks vs every 7 months). Cecil Dragway's advantage is ratings volume (3 vs 1). On price, 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. Cecil Dragway sells 2 in-app purchases, starting at $4.99 per month. The BangShift Billy asks for nothing beyond the download.
The BangShift Billy holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
The BangShift Billy ships an update every 3 weeks, Cecil Dragway every 7 months. Both last shipped on November 3, 2026.
| Parameter | The BangShift Billy | Cecil Dragway |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.3 (3 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 3 weeks — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 48 MB | 20 MB |
| Age rating | 4+ | +4 |
| Developer | William Armstrong | Stephan Monette |
Customer experience
The BangShift Billy
Cecil Dragway
In-app purchases
The BangShift Billy
No in-app purchases
Cecil Dragway
- Cecil Sharing Access$4.991 Month
- Annual Premium Access$8.991 Year
Questions
Is The BangShift Billy free?
Is Cecil Dragway free?
Which has better reviews, The BangShift Billy or Cecil Dragway?
Do The BangShift Billy or Cecil Dragway have ads?
Which is updated more often, The BangShift Billy or Cecil Dragway?
Other comparisons
