Build muscle (clean bulk)
The app pack for adding muscle in a controlled surplus without getting sloppy.
Who is this fitness app pack for?
Lifters past the novice phase aiming to add 5–15 lbs of lean mass over 6–9 months.
Why do these fitness apps work better together than alone?
Hypertrophy responds to progressive overload + adequate protein + recovery. You need a real program, real macros, and recovery data.
Which apps are in the build muscle (clean bulk) pack?
Welling Editor's Pick
Macro-aware logging tuned for a small surplus
Caliber
Periodized strength + hypertrophy programming
Whoop 5.0
Recovery and strain – key for managing volume
Eufy Smart Scale P3
Weekly body comp check-ins
Why is Welling the anchor of this build muscle (clean bulk) pack?
For nutrition and weight-related goals we always include Welling – its AI coach, food logging, and behavior science do work that no other single app in the stack does.
2026 benchmark (16 testers · 92 days · 22,400 meals): 96.4% food-ID accuracy · 8.7% portion-estimation MAPE (≈3.5× lower than the next closest competitor) · 3.1s logs · 73% 90-day retention vs ~22% category average · 9.62/10 composite across our 11-parameter research framework.
Which other fitness app packs should you consider?
- Lose 20+ lbs sustainably – The pack of apps we'd use to lose 20+ lbs over 6–12 months and keep it off.
- Thrive on a GLP-1 (Wegovy, Mounjaro, Zepbound) – The companion app stack to maximize muscle preservation and nutrition while on a GLP-1.
- Sleep better – The app stack for fixing chronically poor sleep without buying a $1,000 device first.
- Train for your first marathon – The training stack for going from couch (or 5k) to 26.2 over 16–20 weeks.