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Minterval: Fitness Timer icon

Minterval: Fitness Timer

HIIT, 4x4 & Heart Recovery
Grant NEALE · Health & Fitness
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App info

Developer
Grant NEALE
Category
Health & Fitness, Sports
Released
Sep 14, 2026
Version
1.0.1 (Sep 21, 2026)
Price
Free
Size
69.0 MB
Requires
iOS 17.0
Age rating
9+
Languages
English, French, German, Italian, Portuguese, Spanish

In-app purchases

Iron$2.99
Kettlebell$2.99
Fluid 2$2.99
Recovery$2.99
Fluid 1$8.99
Minterval Pro$8.99
Current prices, App Store US.
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About Minterval: Fitness Timer

The 4×4, measured properly — so you can tell whether it worked. Choose your work interval, recovery time and number of rounds—for example, four minutes hard, three minutes easy, repeated four times. Minterval runs the session, then measures what it did to you: how long you held your target band and how quickly your heart rate came down afterwards. It does not invent numbers. No estimated VO₂ max, no population percentile, no made-up score. Every figure on the screen was measured on you, or it is not there. WHAT IT MEASURES • Time held in your target band, round by round • Heart recovery — HRR60 and HRR120, using the same recovery protocol each time • Your history: this week free; month, year and all-time with Pro • 4×4 Test Lab — a fixed benchmark with a saved profile, quality checks and every attempt retained BUILT TO BE USED IN A GYM • A recorded coach who counts you in and calls the…
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