Comparison

Unbuzz vs Sleep Timer

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Unbuzz

Features
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Your coffee. Your timing. Unbuzz helps you see how your logged caffeine adds up and how its estimated level changes through the day. Bring a little more intention to your next drink and your evening routine. LOG YOUR USUAL Keep your favourite drinks close and log them in a tap. SEE YOUR CAFFEINE TIMELINE Explore an estimate of your caffeine level over time, alongside your logged drinks. PLAN YOUR TIMING Use your caffeine budget and timing insights to reflect on your routine and plan your last coffee. MAKE SMALL CHANGES Choose caffeine challenges, build streaks, and celebrate your milestones with your Unbuzz companion. Some features require an in-app purchase or subscription. Check the app for available plans. Caffeine levels and timing are estimates. Individual responses vary. Unbuzz does not measure caffeine in your body, predict when you will fall asleep, or provide medical advice.

About

Sleep Timer

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Sleep Timer is a transparent, science-based app designed for comfortable sleep and gentle waking. Built for people who need a clean and reliable sleep tool: - Free app - No subscriptions - No ads - No account registration - No data collection - Works entirely offline SLEEP TIMER & FALLING ASLEEP Smooth audio fade-out, smart screen dimming, and haptic feedback help you fall asleep quickly and naturally: - Precise fade-out duration (audio gradually fades to zero without jolting you awake). - Haptic pattern support (e.g., an "Inhale/Exhale" rhythm to help slow your heart rate). - Automatic playback stop to save battery life. GENTLE WAKE-UP (ALARM) Forget harsh and startling alarms. Sleep Timer wakes you up as comfortably as possible: - First โ€” a gradually increasing vibration (from rare pulses to frequent ones). - Then โ€” your chosen ambient sound, with volume rising from 0% to 100% over a custom duration. - Works independently of the sleep timer (you can set both night and morning modes simultaneously). MASSIVE LIBRARY & MIXES Create your perfect acoustic environment. Combine up to 3 sounds into your ideal mix with individual volume controls: - Classic noises (white, brown, radio static). - Nature sounds (rain on a tent, ocean waves, forest, melting snow, night crickets). - Cozy home textures (fireplace, fan, cat purring, brewing coffee). - City and travel (train rhythm, night city noise, airplane cabin). FULL-SCREEN BACKGROUNDS & COLOR THERAPY Your phone turns into a window overlooking the rain or the night sky: - Full-screen live backgrounds that won't blind you in the dark (Dunes, Night Sea, Starry Sky). - Warm color filters to block blue light. - Customizable smooth screen dimming synchronized with the audio fade-out. SCENARIOS & SCIENTIFIC APPROACH - Save your favorite timer and sound combinations for a quick start. - Use built-in, research-based presets (e.g., "Resonance Breathing" to lower heart rate variability, or a 25-minute "Power Nap" to avoid sleep inertia). PRIVACY BY DESIGN All your settings, mixes, and scenarios are stored exclusively locally on your device. Sleep Timer does not send audio data to a server, has no built-in trackers, and does not share information with third parties. IMPORTANT Sleep Timer is a tool for relaxation and acoustic environment control. The app is not a medical device. If you suffer from chronic insomnia, sleep apnea, or other serious sleep disorders, please consult a doctor.

Screenshots

Unbuzz4 screens
Sleep Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: Sleep Timer at none against Unbuzz's 3. Unbuzz's advantage is update cadence (fortnightly vs every 2 months) and device support (3 vs 1). On price and ads there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Unbuzz sells 3 in-app purchases, starting at $2.99 per month. Sleep Timer asks for nothing beyond the download.

UpkeepUpdate frequency

Unbuzz ships an update fortnightly, Sleep Timer every 2 months. The most recent releases landed on September 23, 2026 and September 20, 2026 respectively.

Scorecard4 real differences ยท 2 level
Unbuzz versus Sleep Timer: the parameters behind the verdict, then further details
ParameterUnbuzzSleep Timer
PriceFreeFree
Update frequencyFortnightly โ€” betterEvery 2 months
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPod, Apple Watch โ€” betteriPhone
Requires iOS13.0 โ€” better17.6
Further details โ€” not scored
Size141 MB37 MB
Age rating4+4+
DeveloperHealth3 AGXeniya Bykhova

In-app purchases

3 purchases

Unbuzz

Subscriptions2
  • Unbuzz Pro$2.991 Month
  • Unbuzz Pro (Annual)$19.991 Year
One-time1
  • Unbuzz Pro (Lifetime)$49.99
None

Sleep Timer

No in-app purchases

Questions

Is Unbuzz free?
Unbuzz is free to download, with in-app purchases available.
Is Sleep Timer free?
Sleep Timer is free to download, with no in-app purchases.
Do Unbuzz or Sleep Timer have ads?
Neither Unbuzz nor Sleep Timer shows ads.
Which is updated more often, Unbuzz or Sleep Timer?
Unbuzz ships an update fortnightly, and Sleep Timer every 2 months. Most recently, Unbuzz was updated on September 23, 2026 and Sleep Timer on September 20, 2026.

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