Comparison

PEGASI Sleep vs brid.zzz

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

Head to head
About

PEGASI Sleep

This app works with special glasses to help improve sleep quality, reduce the time it takes to fall asleep, and increase deep sleep. It aims to boost daytime energy and productivity while easing jet lag symptoms.

Highlights
  • Improve sleep quality
  • Shorten time to fall asleep
  • Increase deep sleep
  • Wake up naturally
  • Increase daytime energy
  • Reduce jet lag symptoms
Features
Read full description

The official app for PEGASI Glasses. Use the app with PEGASI Glasses to solve a series of sleep problems, track the improvement of your sleep quality and bring you the best sleeping experience ever. PEGASI Glasses 1. Improve sleep quality 1.1 Shorten the time of falling asleep 1.2 Increase the amount of deep sleep 1.3 Wake up naturally and easily in the morning 2. Increase energy level and productivity for daytime 3. Reduce the symptoms of jet lag

About

brid.zzz

Read full description

brid.zzz is a mental health management solution that helps to nurture my mind. By using it consistently three times a day, you can create your own mental routines. Real-time measurements of brainwaves and synchronized soundtracks help restore peace of mind amidst daily stress, tension, anxiety, and insomnia. [Mental Routine] Utilize brainwave and breath control sounds suited for moments in daily life when you may feel tense, anxious, stressed, or unable to sleep, maintaining optimal mental well-being. [Focus Routine] Experience the joy of immersion with specially designed binaural beat soundtracks by brid.zzz. [Sleep Tracker] Real-time brainwave monitoring continues not only during the day but also throughout the night. brid.zzz provides special sleep care sounds tailored to your state, improving sleep quality. Analyzing measured brainwaves, the sound automatically stops when you fall asleep, guiding you into deeper sleep. It detects sleep stages, positions, and tossing and turning, revealing even unknown sleep habits. [Personalized Solutions] Through the analysis of brainwave and lifestyle data, it offers tailored mental solutions optimized for your daily life and state. *The brid.zzz app is available for use after registering brid.zzz by LG Labs product. *brid.zzz is not a medical device, and the product's effectiveness may vary depending on the individual.

Screenshots

PEGASI Sleep4 screens
brid.zzz4 screens

Verdict

The call

PEGASI Sleep and brid.zzz are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 6, 2026 and October 27, 2026 respectively.

ScorecardNo meaningful differences
PEGASI Sleep versus brid.zzz: the parameters behind the verdict, then further details
ParameterPEGASI Sleepbrid.zzz
PriceFreeFree
Rating2.4 (8 ratings) — better—
Positive reviews20.0% of reviews—
Number of ratings8 — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size41 MB78 MB
Age rating4+4+
DeveloperShenzhen Qianhai Icecold IT Co., Ltd.SLEEPWAVE INC.

In-app purchases

None

PEGASI Sleep

No in-app purchases

None

brid.zzz

No in-app purchases

Questions

Is PEGASI Sleep free?
PEGASI Sleep is free to download, with no in-app purchases.
Is brid.zzz free?
brid.zzz is free to download, with no in-app purchases.
Do PEGASI Sleep or brid.zzz have ads?
Neither PEGASI Sleep nor brid.zzz shows ads.
Which is updated more often, PEGASI Sleep or brid.zzz?
PEGASI Sleep ships an update every 3 weeks, and brid.zzz every 3 weeks. Most recently, PEGASI Sleep was updated on October 6, 2026 and brid.zzz on October 27, 2026.

Other comparisons