Lief App vs Somnee
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lief App
This smart patch discreetly tracks heart rate and variability to help you manage stress. It offers drug-free biofeedback exercises to train your body's stress response, promoting mindfulness and control.
- HRV tracking
- Heart rate monitoring
- Biofeedback exercises
- Stress response training
- On-demand stress relief
- Drug-free solution
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Lief is a discreet, clinically-accurate smart-patch that measures your heart rate and heart rate variability. It trains you to control your body’s natural stress response through guided, gentle, and safe biofeedback exercises. Lief’s on-demand stress relief intervention is a 100% drug-free solution to improve your health and to remain mindful and in control throughout your day.
Somnee
This app works with a smart headband to improve sleep quality using personalized neurostimulation and EEG tracking. It provides detailed sleep reports and insights to help you sleep faster, longer, and deeper.
- Personalized sleep neurostimulation
- Clinical-grade EEG sleep tracking
- Detailed sleep performance reports
- AI sleep coach
- Phone-free session start
- Comfortable, breathable headband design
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Meet Somnee, the app that works with the award-winning smart sleep headband that directly improves sleep quality and decodes nightly sleep performance for unrivalled insights. As your own clinical-grade AI sleep coach, Somnee pairs proven personalized neurostimulation that helps you naturally sleep faster, longer, and deeper, with precise sleep reports powered by lab-grade EEG tracking. IMPROVE 360° SLEEP HEALTH Somnee is proven to cut time to fall asleep by 50%, reduce wake-ups by 33%, and boost total sleep time by ~30 min. It’s 4x more effective than melatonin, 2x more effective than CBT-i, and 1.5x more effective than Ambien. PERSONALIZED SLEEP NEUROSTIMULATION Somnee maps the unique way your brain sleeps, then delivers gentle frequencies to boost your optimal sleep signals. The result: a dynamic, effective, 100% personalized sleep system that evolves with you as your sleep changes over time. BRAIN-BASED TRACKING + SLEEP REPORTS Clinical-grade EEG+ sensors collect precise brainwave data straight from the source, uploading 40x more sleep data than most trackers. Explore reports featuring insights into sleep onset, sleep stages, and more. PHONE-FREE USE, ALL-NIGHT COMFORT Start sessions phone-free with just the click of the headband button. Somnee’s soft, breathable fabric and innovative design molds to you for maximum comfort, no matter how you sleep. MADE BY WORLD-RENOWNED SLEEP NEUROSCIENTISTS Developed over 7 years of R&D by Dr. Matthew Walker (Author of NYT Bestseller, “Why We Sleep”), Dr. Bob T. Knight. Dr. Ram Gurumoorthy, and Dr. Rich Irvy — Somnee leverages cutting edge neuroscience used by top sleep labs for decades, now made available from the comfort of home. Our real-world results are clinically proven and published in the peer-reviewed scientific journal, Frontiers in Human Neuroscience. Have questions? We’re here to help. Email us at support@somneesleep.com. Terms of Use: www.somneesleep.com/pages/privacy-policy-and-terms-of-use/ www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Lief App at 4.0 against Somnee's 3.7. Lief App also leads on iOS requirement (13.0 vs 15.1). Somnee's advantage is review sentiment (64% vs 45%) and ratings volume (71 vs 2). On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Lief App holds the better App Store score, 4.0 against 3.7. That said, the two scores are not equally well evidenced: Somnee has 71 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 45% of Lief App's written reviews are positive against 64% of Somnee's, so the app with the better star average is not the one people write more warmly about.
Lief App ships an update every 5 weeks, Somnee every 2 months. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.
| Parameter | Lief App | Somnee |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) — better | 3.7 (71 ratings) |
| Positive reviews | 44.7% of reviews | 64.4% of reviews — better |
| Number of ratings | 2 | 71 — better |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 80 MB | 164 MB |
| Age rating | 4+ | 4+ |
| Developer | BrainBot, Inc. | StimScience |
Customer experience
Lief App
Somnee
User reviews
Lief App
From 2 App Store ratingsWhat we love
- 💡 Effective stress management
- 💡 Improved anxiety levels
- 💡 Real-time biofeedback
- 💡 Helps regulate nervous system
- 💡 Teaches breathing techniques
Room to improve
- 🐛 Connectivity issues
- 🐛 App is buggy
- 🐛 App crashes frequently
- 🐛 Difficult to connect
- 🐛 Unreliable
Somnee
From 71 App Store ratingsWhat we love
- 👍 Helps fall asleep faster
- 👍 Improves deep sleep quality
- 👍 Customer service is responsive and helpful
- 👍 App is easy to use
- 👍 Device is comfortable to wear
Room to improve
- 🐛 App is buggy and unreliable
- 🐛 Device can be inaccurate in tracking sleep
- 🐛 Headband falls off frequently
- 🐛 Subscription model is mandatory and costly
- 🐛 Customer service can be unhelpful or evasive
Bugs and requests
Lief App
Reported bugs
19 issues- Unable to download latest update
- App bricked after update
- Stuck on pulsing screen
- Won't connect on iPhone or Mac
- Self-pacing (buzzing) not working
Show 14 moreShow fewer
- Annoying check-in feature cannot be turned off
- App cannot be opened
- Cancel subscription button not working
- App crashes upon opening
- App kicks user off after update
- App crashes multiple times when opened
- App does not reliably download data
- App unstable after recent updates
- App crashes, kills battery
- App chews through cell data
- App not connecting reliably to internet
- App does not work without connection
- Device keeps telling user they are stressed
- App takes a long time to load
Requested features
6 requests- Add button to turn off vibration
- Make subscription more affordable
- Sell device outright
- Provide clear instructions/manual
- Improve data breakdown and comparison
Show 1 moreShow fewer
- Allow adding notes for activities/moods
Somnee
Reported bugs
18 issues- App malfunctions and prevents use
- Sleep reports are delayed or unavailable
- Device asks for reset in the middle of the night but won't restart
- App stops tracking sleep if woken up and button is pressed
- Device inaccurately registers sleep patterns (e.g., REM sleep)
Show 13 moreShow fewer
- App says user is not due for another session after taking device off
- Headband falls off frequently
- App is not intuitive and lacks instruction
- New UI is missing reports
- Headband is not reliable and asks for reset
- App is buggy and prevents use (e.g., 'cool down mode')
- Bad connection with electrodes
- Device doesn't track sleep stages
- Customer service is evasive with answers
- Trial period starts from order date, not activation date
- Subscription is required for cancellation
- App is extremely buggy and data is useless
- App prevents use due to 'cool down mode'
Requested features
8 requests- Add more sleep tones or meditation sounds
- Provide a better tutorial on data interpretation
- Improve headband design for comfort
- Offer bulk electrode sales
- Provide warranty on the headband
Show 3 moreShow fewer
- Add a dark mode to the app
- Track sleep stages for real-time feedback
- Easier way to update payment information
In-app purchases
Lief App
No in-app purchases
Somnee
No in-app purchases
