Comparison

SleepRec vs SleepWindow

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

SleepWindow

Features
Read full description

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

SleepRec4 screens
SleepWindow4 screens

Verdict

The call

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

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

SleepRec ships an update monthly, SleepWindow every 5 months. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
SleepRec versus SleepWindow: the parameters behind the verdict, then further details
ParameterSleepRecSleepWindow
PriceFreeFree
Rating4.3 (120 ratings) — better—
Positive reviews67.2% of reviews—
Number of ratings120 — better—
Update frequencyMonthly — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS16.0 — better17.6
Further details — not scored
Size39 MB1 MB
Age rating4+4+
DeveloperGiovanni TrentaSteve 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
Show 1 more
  • 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

None

SleepRec

No in-app purchases

None

SleepWindow

No in-app purchases

Questions

Is SleepRec free?
SleepRec is free to download, with no in-app purchases.
Is SleepWindow free?
SleepWindow is free to download, with no in-app purchases.
Do SleepRec or SleepWindow have ads?
Neither SleepRec nor SleepWindow shows ads.
Which is updated more often, SleepRec or SleepWindow?
SleepRec ships an update monthly, and SleepWindow every 5 months. Most recently, SleepRec was updated on November 3, 2026 and SleepWindow on October 31, 2026.

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