Sleeper vs BMI calculator
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Sleeper
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Sleeper is not another generic relaxation app. It's a sound-masking system built to solve one very specific problem: you can't sleep because of a noise you don't control. We don't sell "nice sounds." Every mask inside Sleeper is engineered to cancel one exact type of noise โ footsteps and slamming doors upstairs, a TV or voices through the wall, a partner's snoring, traffic outside your window, a hotel corridor, a dog barking, a baby crying. You pick the noise that's keeping you up, and Sleeper gives you the exact counter-frequency for it. How it works: your brain never fully stops listening while you sleep. What actually wakes you up is the sudden jump between silence and a noise spike โ a door, a voice, an engine. Sleeper raises your room's background level in a steady, controlled way (using precisely tuned white, pink and brown noise layered with real-world sounds like rain or airplane cabin) so that jump disappears. No contrast, no alarm signal to your brain, no waking up. Built around real situations, not generic scenes: โข Noisy Neighbors โ separate masks for footsteps, voices/TV, and impacts through walls and ceilings โข Traffic & Street โ continuous coverage for sirens, motorcycles and the rise-and-fall of traffic โข Snoring Partner โ a low-frequency mask you can play from your phone without leaving the bed โข Hotel & Hospital โ masks for corridor noise, door slams, and nearby equipment beeps โข Airport & Flight โ engine drone and boarding-area coverage for the road warrior โข Construction & Renovation โ masks tuned specifically for hammering and drilling โข Barking Dogs & Crying Babies โ layered coverage for sudden, high-pitched sound spikes โข Rain Sounds โ seven natural rain-based masks, from soft rain to full storm Each mask lets you control volume independently, so you build a different mix for a different night. Add a sleep timer with a fade-out so gentle you won't notice it end, and background playback that keeps protecting your sleep all night, screen locked, calls and alarms handled automatically. Sleeper won't stop your neighbor, the traffic, or your partner's snoring. It stops your body from reacting to it โ so you fall asleep without fighting the room, stay asleep without being pulled back by every sound, and wake up actually rested. Available in English, Portuguese, Spanish, Arabic, Chinese and Hindi. Read more about our terms and conditions here: Terms of Service: https://go.sleeperplace.com/terms Privacy Policy: https://go.sleeperplace.com/privacy
BMI calculator
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Weight loss starts with clarity. WeightNote is a simple BMI calculator and daily weight tracker โ built for people who want to make progress without obsessing over every detail. Log your weight in seconds. Watch your BMI shift as you stay consistent. Clear trends replace guessing. Small wins turn into real progress. No pressure. No complexity. Just steady movement toward a healthier you. Everything is included with WeightNote Pro. There's no free tier โ every feature is unlocked with a Pro subscription. BMI calculator Daily weight logging Trend tracking & progress overview Choose the plan that works for you: Weekly โ full access, billed weekly Yearly โ full access, billed once a year (best value) Subscriptions are charged to your Apple ID. Cancel anytime in your App Store settings. Unused trial time is forfeited when a subscription is purchased. https://snapmonolab.com/mobile-app-terms-of-use/
Screenshots
Verdict
The clearest difference is update cadence: Sleeper at fortnightly against BMI calculator's every 6 weeks. Sleeper also leads on iOS requirement (15 vs 26.0). On price, ads, in-app purchases and device support 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
Both are free to download. Sleeper sells 2 in-app purchases, starting at $3.99 per month and BMI calculator sells 2 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Sleeper ships an update fortnightly, BMI calculator every 6 weeks. Both last shipped on October 25, 2026.
| Parameter | Sleeper | BMI calculator |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly โ better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 15 โ better | 26.0 |
| Further details โ not scored | ||
| Size | 77 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Francisco Edeson Alves Bizerril | Jeronimo Landauer |
In-app purchases
Sleeper
- Monthly Plan$3.991 Month
- Annual Plan$19.991 Year
BMI calculator
- Weekly Access$0.997 Days
- Yearly Access$14.991 Year









