Comparison

EveLock vs Sleep Timer

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

Head to head
About

EveLock

Features
Read full description

Private, offline cycle & mood tracker. EveLock helps you log periods, symptoms, and moods—without accounts, cloud sync, or tracking. Your data lives on your iPhone and can be protected with a PIN/Face ID. Why EveLock * No account or cloud — nothing leaves your device * PIN / Face ID lock — keep entries private * Simple calendar — log periods in seconds * Predictions — see upcoming cycles and fertile windows (wellness only) * Moods & symptoms — cramps, headaches, energy, notes, and more * Dark Mode + large text — easy on the eyes and accessible * Export — optional local backup/share when you choose Privacy, by design EveLock doesn’t use analytics, ads, or third-party SDKs. We don’t collect or sell data—ever. Important EveLock is a general-wellness app and does not provide medical advice or diagnosis. Always consult a qualified professional for health decisions.

About

Sleep Timer

Read full description

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 — a gradually increasing vibration (from rare pulses to frequent ones). - Then — 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

EveLock4 screens
Sleep Timer4 screens

Verdict

The call

The clearest difference is update cadence: Sleep Timer at every 2 months against EveLock's every 8 months. On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

EveLock ships an update every 8 months, Sleep Timer every 2 months. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

Scorecard1 real difference · 5 level
EveLock versus Sleep Timer: the parameters behind the verdict, then further details
ParameterEveLockSleep Timer
PriceFreeFree
Update frequencyEvery 8 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better17.6
Further details — not scored
Size8 MB37 MB
Age rating12+4+
DeveloperSasa MilatXeniya Bykhova

In-app purchases

None

EveLock

No in-app purchases

None

Sleep Timer

No in-app purchases

Questions

Is EveLock free?
EveLock is free to download, with no in-app purchases.
Is Sleep Timer free?
Sleep Timer is free to download, with no in-app purchases.
Do EveLock or Sleep Timer have ads?
Neither EveLock nor Sleep Timer shows ads.
Which is updated more often, EveLock or Sleep Timer?
EveLock ships an update every 8 months, and Sleep Timer every 2 months. Most recently, EveLock was updated on October 4, 2026 and Sleep Timer on October 7, 2026.

Other comparisons