Comparison

SUNI vs Red Light for Sleeping

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

Head to head
About

SUNI

Transform your device into a calming sanctuary with ambient red light. Designed for meditation, mindfulness, and sleep routines, it creates a tranquil environment to help you unwind and focus.

Highlights
  • Ambient meditation light
  • Mindfulness timers
  • Rhythmic pulse modes
  • Sleep-ready atmosphere
  • Distraction-free interface
Read full description

Create your sanctuary. Experience the calming power of Red Light. SUNI transforms your iPhone into a dedicated relaxation device, using powerful R-LED technology to create a soothing ambient environment. Designed for meditation, mindfulness, and nightly wind-down routines, SUNI helps you disconnect from the noise of the day and bathe your surroundings in warm, tranquil light. THE SUNI EXPERIENCE: Harsh blue light from screens can disrupt your sense of calm. SUNI counteracts this by flooding your space with deep red wavelengths, creating a "digital sunset" that signals to your mind that it is time to rest. It is the perfect visual anchor for yoga, breathwork, or simply decompressing after work. KEY FEATURES: • Ambient Meditation Light: Use your screen’s maximum brightness to cast a warm, red glow over your room—perfect for turning any space into a warm studio. • Mindfulness Timers: Set sessions for 10, 20, or 30 minutes to guide your meditation practice without watching a clock. • Rhythmic Pulse Modes: Select from ambient audio or gentle pulses to synchronize your breathing and deepen your focus. • Sleep-Ready Atmosphere: Use SUNI as a bedside lamp to read or relax without the wakeful effects of standard blue light. • Distraction-Free Interface: A minimal, dark-mode design ensures nothing breaks your state of flow. PERFECT FOR: • Meditation: Use the red glow as a focal point to center your thoughts. • Nightly Routines: Replace harsh room lighting with SUNI while you prepare for bed. • Yoga & Stretching: Create a studio-like atmosphere anywhere you go. • Focus & Flow: Use the steady red light to reduce visual clutter and focus on the task at hand. NOTE: We do not offer medical advice. Any and all recommendations should be viewed as suggestions, please consult with a professional and do your own research before trying red light in your routines. SUBSCRIPTION INFORMATION: A SUNI subscription is required to use and enjoy full access to features and content. If you choose a SUNI subscription, payment will be charged to iTunes Account at confirmation of purchase. Please note that terms and conditions, as well as our privacy policy, apply. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.logoslabs.co/suni-privacy-policy Contact Us: support@logoslabs.co

About

Red Light for Sleeping

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

Highlights
  • Deep red OLED light emission
  • Customizable brightness and red tone
  • Sleep timer functionality
  • White noise and relaxing sounds
  • No user tracking or ads
  • 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/

Screenshots

SUNI4 screens
Red Light for Sleeping4 screens

Verdict

The call

The clearest difference is rating: Red Light for Sleeping at 5.0 against SUNI's 4.4. Red Light for Sleeping also leads on update cadence (every 9 days vs every 3 weeks). SUNI's advantage is ratings volume (20 vs 4). On price, review sentiment, ads and in-app purchases 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. SUNI sells 6 in-app purchases, starting at $9.99 per 7 days and Red Light for Sleeping sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Red Light for Sleeping holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: SUNI has 20 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

SUNI ships an update every 3 weeks, Red Light for Sleeping every 9 days. The most recent releases landed on November 5, 2026 and November 1, 2026 respectively.

Scorecard3 real differences · 7 level
SUNI versus Red Light for Sleeping: the parameters behind the verdict, then further details
ParameterSUNIRed Light for Sleeping
PriceFreeFree
Rating4.4 (20 ratings)5.0 (4 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings20 — better4
Update frequencyEvery 3 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.017.0 — better
Further details — not scored
Size47 MB25 MB
Age rating4+4+
DeveloperLogos Labs LLCFaris Abaza

Customer experience

SUNI

All ratings18 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Red Light for Sleeping

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

6 purchases

SUNI

Subscriptions6
  • SUNI Red Light Therapy (Unlimited)$9.997 Days
  • SUNI Red Light Therapy (Unlimited)$17.991 Month
  • SUNI Red Light Therapy (Unlimited)$29.991 Year
Show 3 more
  • SUNI Red Light Therapy (Unlimited)$39.991 Year
  • SUNI Red Light Therapy (Unlimited)$59.991 Year
  • SUNI Red Light Therapy (Unlimited)$79.991 Year
2 purchases

Red Light for Sleeping

Subscriptions2
  • Premium Access$1.991 Month
  • Premium Access7 Days trial$12.991 Year

Questions

Is SUNI free?
SUNI is free to download, with in-app purchases available.
Is Red Light for Sleeping free?
Red Light for Sleeping is free to download, with in-app purchases available.
Which has better reviews, SUNI or Red Light for Sleeping?
Red Light for Sleeping is rated higher. SUNI averages 4.4 out of 5 from 20 ratings, while Red Light for Sleeping averages 5.0 from 4 ratings.
Do SUNI or Red Light for Sleeping have ads?
Neither SUNI nor Red Light for Sleeping shows ads.
Which is updated more often, SUNI or Red Light for Sleeping?
SUNI ships an update every 3 weeks, and Red Light for Sleeping every 9 days. Most recently, SUNI was updated on November 5, 2026 and Red Light for Sleeping on November 1, 2026.

Other comparisons