SleepRec vs SleepWindow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SleepRec
Record and analyze nighttime sounds to understand your sleep patterns. Review past recordings, view sound intensity statistics, and track factors affecting your sleep from a smartwatch.
- Record nighttime sounds
- Listen to past recordings
- Analyze sound intensity statistics
- View decibel level graphs
- Track sleep-affecting factors from smartwatch
- View sleep factor correlations
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SleepRec allows you to record the sounds that are emitted during the night while you are sleeping. It is possible to listen to the recordings of the previous days, in order to also check the intensity of the recorded sound. In the statistics menu, by choosing a date you can view a graph that indicates the maximum level of recorded decibels (also with the appropriate description at the top of the vertical bar), during a certain time (specific description at the bottom of the vertical bar) There is also the possibility, from a smartwatch, to add the factors (drinking water, eating, physical activity, working hours) that can affect sleep and then view them from the app.
SleepWindow
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SleepWindow helps you plan when to sleep, whether you’re working backwards from an alarm or deciding when to wake if you go to bed now. Choose your wake-up time, and SleepWindow calculates bedtime options based on six, five, or four estimated 90-minute sleep cycles, including your preferred allowance for falling asleep. Alternatively, choose “Sleep now” to see suggested wake-up times. Connect Apple Health to compare your selected plan with your recent recorded sleep. Sleep Insights can show your typical sleep duration, bedtime, wake time, and timing variation. Access is optional and read-only: SleepWindow processes the information on your iPhone, never writes to Apple Health, and doesn’t send your health data anywhere. Features: • Bedtime options calculated from your chosen wake-up time • “Sleep now” wake-up suggestions • Optional Sleep Insights using recent Apple Health sleep records • Comparison of your selected plan with your typical sleep duration • Daily bedtime reminders • Adjustable allowance for the time it takes you to fall asleep • Home Screen widget showing your selected bedtime • Support for 12-hour and 24-hour time formats • Deep-plum and warm-cream design • Choice of muted amber or soft coral buttons • Clear explanations of the science and limitations behind the estimates • No accounts, advertising, analytics, or off-device health processing Sleep cycles and individual sleep needs vary, so SleepWindow’s suggestions are planning estimates rather than measurements of your sleep stages. It gives you a clear, private way to make a more informed bedtime plan.
Screenshots
Verdict
The clearest difference is update cadence: SleepRec at monthly against SleepWindow's every 5 months. SleepRec also leads on device support (3 vs 1). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SleepRec ships an update monthly, SleepWindow every 5 months. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | SleepRec | SleepWindow |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (120 ratings) — better | — |
| Positive reviews | 67.2% of reviews | — |
| Number of ratings | 120 — better | — |
| Update frequency | Monthly — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 16.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 39 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Giovanni Trenta | Steve Jaques |
Bugs and requests
SleepRec
Reported bugs
6 issues- App randomly turns off
- Audio playback not supported
- Crashes when pressing 'list'
- App turns off when left on to record
- Does not record sounds
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- Audio not supported on iOS 14
Requested features
5 requests- Ability to select multiple recordings to delete at once
- Option to set a decibel threshold for recording
- Spectrogram for better audio management
- Improve UI
- Add more add-ons and tweaks
SleepWindow
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SleepRec
No in-app purchases
SleepWindow
No in-app purchases









