ColdKeeper vs DeepBreath

ColdKeeper is the simple, beautiful timer for cold therapy. Whether you're starting your first cold shower or running structured Wim Hof sessions, ColdKeeper turns every plunge into measurable progress. Designed for hands you can barely feel. Big tap targets. Strong haptics. Audio cues that get through closed eyes and a hood. No fiddling, no menus, no distractions when you're under the cold. — FOUR SESSION TYPES — • Ice Bath • Cold Shower • Open Water Swim • Contrast Therapy Pick a type, log the temperature (optional), tap the giant START button, and ColdKeeper handles the rest. — GUIDED PROTOCOLS — • Beginner Ramp — 30s → 60s → 2min over four weeks. The proven on-ramp. • Wim Hof — guided breath rounds plus immersion. Follow along, no YouTube. • Contrast Therapy — automatic hot/cold alternation, athlete-style recovery. • Custom (Pro) — design your own intervals. — DEEP HISTORY & STATS — Every session is saved with date, type, duration and water temperature. See your streak, total time under the cold, longest plunge, and weekly trend at a glance. Free tier keeps the last 7 days. Pro keeps everything, forever. — APPLE HEALTH — Sessions write to the Health app as "Cold Water Immersion" workouts (Pro). Your data stays on-device — ColdKeeper never sees it. — COLDKEEPER PRO — ONE-TIME UNLOCK For €7.99 / $7.99 (one-time, never expires) you unlock: • Unlimited history • All advanced protocols + custom protocol builder • Apple Health integration • iCloud sync across all your Apple devices • Home Screen widgets (streak + last session) • Detailed weekly and monthly stats • Priority support No subscription. Pay once. Keep forever. Free updates included. — PRIVACY BY DESIGN — No analytics. No ads. No tracking SDKs. No accounts. Your sessions live on your iPhone (and your private iCloud, if you opt in). The developer cannot see them. Read the full privacy policy at maximesaltet.com/coldkeeper/privacy. — BUILT NATIVELY FOR iOS — SwiftUI. SwiftData with CloudKit. StoreKit 2. Core Haptics. HealthKit. Localized in English and French. Light + dark mode. Dynamic Type ready. Built and maintained by an indie developer who actually answers your emails. — DISCLAIMER — ColdKeeper is a wellness and lifestyle app, not a medical device. Cold exposure can be dangerous. Consult a physician before starting, especially if you have cardiovascular conditions. Never plunge in open water alone. The app does not diagnose, treat, or prevent any condition. Stay frosty.

DeepBreath guides you through Wim Hof-inspired breathing cycles — systematic rounds of controlled hyperventilation followed by precise breath retention — designed to boost energy, sharpen focus, and build stress resilience. HOW IT WORKS Each session consists of configurable rounds of deep, rhythmic breaths followed by a breath-hold (retention) phase and a brief recovery breath. The app tracks your retention time each round and shows your progress over time. KEY FEATURES • Configurable rounds (1–10) and breaths per round (20–50) • Real-time animated breathing guide with phase cues • Haptic feedback synced to your breath rhythm • Ambient sound options: Silence, Rain, Binaural Beats, Pink Noise, Tibetan Bowl • Session history with charts (daily count, retention trend) • Structured programs: 7-Day Beginner, 14-Day Intermediate • Siri integration — start a session hands-free • Daily reminder notifications SAFETY NOTICE Controlled hyperventilation causes real physiological changes including reduced blood CO₂, lightheadedness, and tingling. Always practice seated or lying down. Never practice while driving, in water, or standing. Consult a physician if you have cardiovascular disease, epilepsy, or are pregnant.