ChainFlow vs Lower Back Stretching

A custom interval timer for routines where every interval can be different. Most workout timers are built around repeating the same work and rest periods. ChainFlow lets you build the exact sequence you need, with individual timing for every step. Create HIIT workouts, circuit training sessions, stretching and mobility routines, boxing rounds, exercise sequences, drawing practice, focus sessions, and more. BUILD ANY ROUTINE Add as many intervals as you need. Give each one its own name and timing, then drag them into the exact order you want. START FAST WITH TEMPLATES Begin with ready-made HIIT, Tabata, Boxing, Morning Mobility, Pomodoro, and Gesture Drawing templates—or start completely from scratch. Every template becomes a normal ChainFlow routine you can fully edit. HANDS-FREE TIMING Hit Start and focus on what you're doing instead of watching the clock. ChainFlow automatically moves through your sequence and gives you clear audio cues at each transition. • Works while your phone is locked or ChainFlow is in the background • Live Activities and Dynamic Island support • See your current interval and what comes next • Pause, skip forward, or return to the previous interval • Optional 3-2-1 countdown before starting • Works alongside music, podcasts, and other audio • Optional audio ducking during cues BUILD ONCE. USE IT AGAIN. Save your favorite routines, duplicate individual intervals or entire chains, reorder them anytime, and quickly adjust a routine for your next session. ChainFlow works especially well when your routine doesn't fit a rigid repeating timer: • Custom interval workouts • Circuit training • HIIT and Tabata • Stretching and mobility • Boxing and round training • Exercise and strength training • Yoga and meditation sequences • Gesture and figure drawing practice • Pomodoro and focus sessions Whether you're training, stretching, drawing, studying, or building a routine of your own, ChainFlow keeps the timing out of your head so you can stay in the flow.

Lower Back Stretching is a focused routine app for the part of your body that carries everything else. Built for desk workers, athletes, and anyone whose back talks back, it gives you guided programs, a custom routine builder, and small tools that make consistency easy. WHAT'S INSIDE • 30+ targeted stretches with animated demos, body diagrams, and "watch on YouTube" links • Multi-day programs for lower back relief, hip openers, post-run cooldown, sciatica relief, and more • Custom routine builder — pick any stretches, reorder, save, share via link or QR code • Pain Log — rate how your back feels before and after each session; see the delta over time • Daily reminder + evening "streak safety net" so you don't lose your habit • Calendar with session history, streak tracking, and weekly/monthly goals • Achievements + XP — progress without being patronizing • Tap-where-it-hurts body diagram to find stretches by zone • Safety check at onboarding — surfaces symptoms that warrant seeing a doctor first • Apple Health integration — log sessions as flexibility workouts, get cooldown suggestions after long walks • Optional Apple Watch companion for screen-free routines • Glossary of anatomy and stretching terms PRIVACY-FIRST No accounts, no analytics, no tracking. Every session, routine, and pain rating lives on your device. HealthKit reads are local. Optional cloud sync is opt-in. Built by someone who needed it. Hope it helps.