Comparison

Red Light for Sleeping vs flow feel

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

Head to head
About

Red Light for Sleeping

This app uses your device's OLED display to emit deep red light, promoting better sleep by reducing harsh nighttime brightness. Customize brightness, red tone, and set a sleep timer for a calming experience. It also offers white noise and relaxing sounds.

Highlights
  • Deep red OLED light emission
  • Customizable brightness and red tone
  • Sleep timer
  • White noise and relaxing sounds
  • No user tracking
  • No account required
Features
Read full description

Sleep better with deep red OLED light designed for nighttime comfort. • No user-tracking - no ads. • No account required. Using your iPhone’s built-in OLED display, the app produces red light in the ~620nm–670nm range to help reduce harsh nighttime brightness before sleep. Customise brightness, choose your preferred red tone, and set a sleep timer for a calmer nighttime experience. Play white noise and relaxing sounds in background to relax or focus. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

flow feel

Features
Read full description

Your cycle is personal. Your data should be too. flow feel is a private period and cycle-awareness app that helps you listen to your body while keeping optional calendar guidance close at hand. FEEL FIRST Open the app and begin with what is true today—not what a calendar says should be true. Record: * Emotional feelings * Physical body signals * Energy and recovery * Connection and inner knowing * What you need * Private notes in your own words * When your period starts and flow ends Return, Rise, Open and Deepen are optional listening lenses. Choose one only when it fits, or choose “Still listening.” Flow Feel does not assign you a personality or tell you how you should feel. SHOW WHEN YOU WANT GUIDANCE Switch from Feel to Show whenever you want to see the smart adaptive calendar. Show begins with a 28-day guide, then adapts using your recent recorded cycle and flow lengths. It can display: * Estimated Return, Rise, Open and Deepen timing * An estimated middle window * A next-flow date range * Cycle-day and calendar-date context These are estimates—not confirmation of ovulation, fertility or what your body is doing. Your recorded experience always comes first. PRIVATE BY DESIGN Your personal cycle and listening records stay in the app’s private local data store. * No account * No ads * No social profile * No third-party analytics * No behavioural tracking * No remote backend for your records * Core features work offline * Optional reminders are scheduled locally Apple Health is optional. With your permission, Flow Feel can import menstrual-flow history and save completed flow days you confirm. Feelings, body signals, needs and private notes are not written to Apple Health. LEARN YOUR OWN RHYTHM Over time, Flow Feel can reflect repeated patterns found in your own records. It returns your observations with uncertainty and context, helping you notice what may be familiar without turning it into a rule. Use Flow Feel to connect with your cycle, remember what your body has told you and choose when guidance is useful. Flow Feel does not diagnose medical conditions and is not contraception, fertility, pregnancy or medical advice.

Screenshots

Red Light for Sleeping4 screens
flow feel4 screens

Verdict

The call

The clearest difference is price: Red Light for Sleeping at Free against flow feel's $9.99. flow feel's advantage is in-app purchases (none vs 2). On ads, device support 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

Red Light for Sleeping is free to download; flow feel costs $9.99 up front. Red Light for Sleeping sells 2 in-app purchases, starting at $1.99 per month. flow feel asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Red Light for Sleeping versus flow feel: the parameters behind the verdict, then further details
ParameterRed Light for Sleepingflow feel
PriceFree — better$9.99
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 weeks—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size25 MB15 MB
Age rating4+4+
DeveloperFaris AbazaThomas Richardson

In-app purchases

2 purchases

Red Light for Sleeping

Subscriptions2
  • Premium Access$1.991 Month
  • Premium Access7 Days trial$12.991 Year
None

flow feel

No in-app purchases

Questions

Is Red Light for Sleeping free?
Red Light for Sleeping is free to download, with in-app purchases available.
Is flow feel free?
flow feel costs $9.99, with no in-app purchases.
Do Red Light for Sleeping or flow feel have ads?
Neither Red Light for Sleeping nor flow feel shows ads.

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