Lumos Sleep vs HIIT Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lumos Sleep
This app helps you combat jet lag, improve sleep during night shifts, and wake up feeling refreshed. It uses patented technology and a proprietary algorithm to regulate your body's natural circadian rhythm, offering tailored programs for various sleep schedules.
- Jet lag and night shift assistance
- Circadian rhythm regulation
- Tailored sleep programs
- Sunrise alarm feature
- Light exposure recommendations
- Smart Sleep Mask integration
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Lumos Sleep: Jet lag and night shift assistant If you want to travel without jet lag, sleep better when working night shifts, get up early, or simply wake up feeling refreshed, Lumos is here for you. Despite their popularity, tactics such as soothing music or adjusting meal schedules are either less effective or very cumbersome in combating jet lag and night shift woes. To truly conquer these sleep disruptions, a more impactful solution directly engaging the body's circadian rhythm is essential for lasting results. A restful night's sleep begins with a healthy circadian rhythm, the body’s natural biological clock. Enter Lumos – the groundbreaking sleep app designed to revolutionize your sleep patterns. Powered by patented technology originating from Stanford University research, Lumos tackles sleep challenges brought on by swiftly changing schedules with its proprietary algorithm powered by research from top universities, supported by NASA, the Department of Defense, and others. With a suite of modules tailored for diverse sleep schedules, Lumos simplifies the transition. From combating jet lag to navigating night shifts, adjusting daily bedtimes to seamlessly adapting during daylight saving, Lumos guides you every step of the way. No matter whether you are traveling or working on night shifts, Lumos has you covered. Set your schedule, and let Lumos generate tailored programs for you. Experience the transformative effects of the light flash program delivered through the Lumos Smart Sleep Mask, a proven method derived from Stanford research for regulating your body's natural rhythms. Experience a refreshing wake-up with Lumos' innovative Sunrise Alarm, expertly crafted to expose you to gentle morning light, ensuring you wake up feeling revitalized and ready to conquer the day. If you don’t own a Lumos Smart Sleep Mask, no worries. Receive actionable recommendations on light exposure while traveling or working night shifts, all without requiring any additional tools. Lumos becomes your sleep companion, guiding you towards restorative sleep effortlessly. Trusted by the US military and professional athletes, including world-renowned champions, Lumos is the go-to solution for optimizing sleep regardless of your lifestyle. Download Lumos now and unlock the secret to revitalizing sleep – your personal sleep revolution awaits. https://www.wsj.com/articles/can-this-mask-make-jet-lag-a-thing-of-the-past-1509115689 https://www.wsj.com/articles/trouble-sleeping-high-tech-masks-can-help-1532535248 https://www.cnet.com/tech/mobile/bon-voyage-jet-lag-this-smart-sleep-mask-promises-a-cure-lumos/ https://athletechnews.com/product-of-the-week-lumos-sleep-mask/ https://www.msn.com/en-gb/travel/news/sleep-expert-shares-his-top-tips-for-sleeping-like-a-pro-while-flying/ar-AA1fdMcL Please see our website for additional information.
HIIT Timer
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Interval Flex: Advanced Interval Timer Create complex interval sequences that simple timers can't handle. Perfect for HIIT workouts with group repetitions, breathwork patterns like 4-7-8 breathing, and pyramid training routines. Why Choose Interval Flex: - Complex Patterns: Group intervals and repeat sections - ideal for boxing rounds, Tabata circuits, and breathing exercises - Smart Grouping: Set up sequences like "warm-up, then repeat high-intensity/rest 5 times, then cool-down" - Breathwork Templates: Pre-built sequences for 4-7-8 breathing, box breathing, and custom patterns - Template Library: HIIT, Tabata, pyramid workouts, and meditation timers ready to use - Visual Feedback: See which intervals are grouped and how many repetitions remain - Multisensory Alerts: Sound, vibration, and visual cues for seamless transitions Perfect For: - Complex HIIT workouts with grouped intervals - Breathwork and meditation sequences - Tabata training with custom rest periods - Pyramid interval training - Any timing pattern simple apps can't create Built for users who need more than basic 30-second/10-second timers. If you've been frustrated by simple interval apps, Interval Flex gives you the flexibility to create exactly the sequences you need. Download now and build the perfect timer for your routine!
Screenshots
Verdict
The clearest difference is price: Lumos Sleep at Free against HIIT Timer's $0.99. Lumos Sleep also leads on update cadence (fortnightly vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Lumos Sleep is free to download; HIIT Timer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Lumos Sleep ships an update fortnightly, HIIT Timer every 2 months. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.
| Parameter | Lumos Sleep | HIIT Timer |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 2.8 (13 ratings) — better | — |
| Positive reviews | 41.7% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 17.5 |
| Further details — not scored | ||
| Size | 76 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | LumosTech, Inc. | Peter Lebedev |
In-app purchases
Lumos Sleep
No in-app purchases
HIIT Timer
No in-app purchases









