DER Series vs GoSlips
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DER Series
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Drag racing Time slips from the DER Series are currently printed using a receipt printer at the race track. This app shows the same time slips information on your phone. The app also enhanced the racer and spectator's experience at the race track by reading more detailed information from each race track on the phone in realtime (within seconds after each race). The app shows the weather station information and calculate the Density Altitude automatically to help the racers to tune their engines before racing. A first in the industry. This app lets you review drag racing time slips from the DER Series at any time. The racers can also use the time slips of their car# and show their car's performance base on the Density Altitude to help calculate your next Dial In at your next bracket drag race with your car. This is another first in the industry. 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
GoSlips
View live drag racing time slips directly on your phone. Track elapsed time, reaction time, speed, and more as races happen. Follow events from anywhere, whether you're at the track or at home.
- Live time slip viewing
- Real-time race data
- Track switching
- Search past slips
- Follow from any location
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GoSlips brings live drag racing time slips to your phone. Choose your track and watch results appear as they happen, including elapsed time, reaction time, dial-in, speed, and the rest of the slip, so you never miss a run. Browse the live feed, search past slips, and switch tracks anytime. Whether you’re in the stands, the pits, or following from home, GoSlips keeps every pass in one place so you can track the race as it unfolds. Whether you’re in the stands, the pits, or following from home, GoSlips keeps every pass in one place so you can track the race as it unfolds.
Screenshots
Verdict
The clearest difference is in-app purchases: GoSlips at none against DER Series's 2. 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. DER Series sells 2 in-app purchases, starting at $0.99 per month. GoSlips asks for nothing beyond the download.
DER Series ships an update weekly, GoSlips every 10 days. The most recent releases landed on September 28, 2026 and October 25, 2026 respectively.
| Parameter | DER Series | GoSlips |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (49 ratings) — better |
| Number of ratings | — | 49 — better |
| Update frequency | Weekly — better | Every 10 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Stephan Monette | Logan Back |
In-app purchases
DER Series
- Monthly Premium Access$0.991 Month
- DERSeries Sharing Service$4.991 Month
GoSlips
No in-app purchases









