Is there a good app for do high-intensity interval training?
Fully Served: 6 apps already serve this, and 3 data points mined from real user reviews across 2 sources show where they fall short. Good apps already cover what people want. You'd need a strong wedge.
Data refreshed July 20, 2026 · scores recompute weekly as new reviews are mined, so re-check before you build.
What users complain about
The most common complaints behind apps that try to do high-intensity interval training, mined and clustered from real reviews:
| Complaint area | Type | Mentions | What a user said |
|---|---|---|---|
| interval training mode | missing-feature | 1 | doesn't support BLE heart rate straps or interval training |
| intermediate workouts not intense enough | other | 1 | I have intermediate level and I wanna feel like the burning I don't really feel the burn sometime |
| workout intensity metrics | missing-feature | 1 | we don't have the same data on the intensity of our workouts |
Apps that already serve this
| App | Rating | Ratings | Price |
|---|---|---|---|
| Interval Timer Pro | 4.5 | 597 | $2.99 |
| Seconds Pro Interval Timer | 4.8 | 11,909 | $7.99 |
| Norwegian 4x4 Protocol | 4.4 | 49 | $5.99 |
| iFIT Workouts | 4.7 | 70,271 | Free |
| Tabata Trainer | 4.5 | 94 | $1.99 |
| Instant Fitness: Workout Trainer | 4.2 | 111 | $4.99 |
Should you build it?
Good apps already cover what people want. You'd need a strong wedge. Opportunity here scores 9 out of 100 — a function of demand, how crowded the field is, and how badly the existing apps perform. Use the live map to compare it against adjacent tasks.
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