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4Level

Stick to your resolutions
Robert Poetzsch · Health & Fitness
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App info

Developer
Robert Poetzsch
Category
Health & Fitness, Sports
Released
Sep 30, 2026
Version
1.3 (Oct 14, 2026)
Price
Free
Size
7.5 MB
Requires
iOS 26.1
Age rating
4+
Languages
English, French, German, Italian, Spanish

In-app purchases

4Level Lifetime$8.99
4Level Pro Yearly$1.99
Current prices, App Store US.
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About 4Level

4Level is made for ambitious amateur athletes who already train regularly and want to know: How fit am I really — and am I sticking to what I set out to do? WHAT 4LEVEL IS — AND WHAT IT IS NOT 4Level analyses the workouts you already record. It does not create training plans, workouts or coaching advice and does not replace a coach. You decide how you train; 4Level measures, explains and keeps you honest. YOUR LEVEL, 1 TO 100 One number from three building blocks: • Fitness — your training load of the last six weeks (CTL) • Capacity — running VO₂max (VDOT) or cycling watts per kilo • Consistency — how regularly you train and, once you set your resolutions, how faithfully you keep them Calculated for every single day back to your first workout, using only what was known on that day. Every value shows whether it was measured or estimated; the whole formula is explained in the app. STICK…
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