Isometric Hold Lab - TUT Timer

Train static strength with actual time under tension — not just a generic repeating timer. Isometric Hold Lab is a completely free, offline Garmin app for dead hangs, planks, wall sits, side planks, grip holds and custom isometric protocols. It guides preparation, work, side switches and rest with clear screens and vibration cues. WHY IT IS DIFFERENT - Finish a hold early when form breaks; the app records actual TUT instead of awarding the target. - Alternate left/right holds and compare total TUT plus bilateral asymmetry. - Review adherence, best hold and the last completed session. - Use five built-in protocols or a fully configurable custom protocol. - Skip preparation/transitions/rest when needed and safely pause before exiting. - Zero permissions, accounts, network, analytics, GPS or sensor access. CONTROLS From READY, use MENU or swipe to choose a protocol, then START. During HOLD, press START when the hold ends early. During preparation, switch or rest, START skips the current break. DOWN opens the last-session summary from READY. Custom values live in Garmin Connect / Connect IQ settings. IMPORTANT This is a manual training timer, not automatic exercise or drop detection. It is not medical, rehabilitation or safety equipment. Choose loads and durations appropriate for you, stop if you feel pain, dizziness or loss of safe grip, and seek qualified guidance when needed. Completely free. No payments, subscriptions or paid features. If it helps, an honest Connect IQ review helps other athletes find it. Request another free ProWatchs app at https://smartwatch.nexooperativo.com/request/. Optional support helps maintain this free app and build new ones; it never unlocks features: https://patreon.com/ProWatchs

Initial release: six static-hold protocols, actual TUT, bilateral balance, saved history, manual early finish, protected exit, touch/button controls and zero permissions.