ReactionTrainer vs DSFL
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ReactionTrainer
Improve your sprint starts with this reflex training app. It simulates race conditions with audio and visual cues, measuring your reaction time to help you achieve faster race starts. Unlock full features with an in-app purchase.
- Simulated race starts with audio cues
- Visual clues for 'Ready' and 'Shot'
- Reaction time measurement
- History and graph analysis
- Sound and visual clue toggles
- 3D Touch support for faster starts
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Train your reflexes for faster race starts. Here is how it works : Push the start button. Then, every 5 seconds - The app says 'Ready' - Between 1.5 and 2.5 seconds later (random), your hear a shot - Tap the screen to simulate a start as fast as you can. This sequence repeats itself until you push 'Stop'. Reaction times are stored for later analysis. The free version gives you 5 attempts before issuing a request to buy - just enough to know how it works. Unlocking is available as an in-app purchase. You can force-quit te app to get another 5 attempts, but past attempts will no longer show in the history table and graph. They are kept on file though for when one should choose to buy later. More features - Turn sound on or off. - Turn visual clues on or off (orange dot when 'Ready', green dot when shot sounds) - On iPhone 6s or later, you can use 3D touch so you can leave your finger on the screen. When the start is given, just push harder. - Reaction times of less than .01 seconds are considered false starts. - No publicity. - Attach your phone on your arm, listen for 'on your marks', (step in the blocks), 'ready' - 'go'. Your phones movement detection will measure your reaction time.
DSFL
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View all the fixtures, results and standings for the Dynamic Schools Football League.
Screenshots
Verdict
The clearest difference is in-app purchases: DSFL at none against ReactionTrainer's 1. 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. ReactionTrainer sells 1 one-off in-app purchase. DSFL asks for nothing beyond the download.
ReactionTrainer ships an update every 13 months, DSFL every 12 months. The most recent releases landed on September 27, 2026 and October 1, 2026 respectively.
| Parameter | ReactionTrainer | DSFL |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (5 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 13 months | Every 12 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 41 MB |
| Age rating | 9+ | 17+ |
| Developer | Bert Torfs BVBA | SportsCAP PTY (LTD) |
In-app purchases
ReactionTrainer
- ReactionTrainer Unlock$0.99
DSFL
No in-app purchases









