Comparison

Underlairs vs Peekmo

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

Head to head
About

Underlairs

Enhance concentration and memory with curated ambient soundscapes and a focus timer. Choose from unique 'Lairs' and track your progress to achieve deep work and productivity goals.

Highlights
  • Focus Timer with customizable durations
  • Beast Mode for continuous music
  • Ambient soundscape playlists
  • Background playback
  • Lock screen controls
  • Stats tracking for focus minutes and streaks
  • Minimalist design
Features
Read full description

Timer and session-based focus workflow: 1. Press play 2. Start the timer & play music 3. Finish a study session Underlairs is focus music for people with ambitious plans. Cinematic, high-intensity soundscapes engineered for deep work — press play, start the timer, and get more done in one session than most people do all day. No lo-fi beach vibes here. This is music for masterminds. FIVE SOUNDSCAPES, ONE MISSION • THE LAIR — Your domain, your default soundscape • BIG DESK ENERGY — Repeal societal expectations and break free • SPACE PIRACY — Fly that spaceship into deep space like you stole it • FLUENT IN FINANCE — Serious people doing serious things • TOXIC INTENSITY — The details of your incompetence is not interesting 60+ original tracks. Zero interruptions. Music designed to keep your brain locked in, whether you're studying, coding, writing, or plotting something bigger. BEAST MODE A focus timer built for real sessions — not just 25-minute sprints. Track deep work sessions up to 24 hours. Start it, disappear into the work, and come back victorious. STATS THAT KEEP SCORE See your focus streaks and total time in the zone. Watch the hours stack up. Evidence of your inevitable rise. WHY UNDERLAIRS • Completely free — every playlist, every feature • No subscription, no ads, no account required • Works offline — all music is on your device • Background playback while you use other apps • Designed for studying, work, coding, reading, and ADHD-friendly concentration Underlairs is free because world domination shouldn't have a paywall. If it helps you get things done, there's a tip jar inside — entirely optional, eternally appreciated. Your lair awaits. Press play and get to work.

About

Peekmo

Features
Read full description

You forget things you wrote down because you never open the note again. Peekmo keeps short notes on your Lock Screen and in a Home Screen widget. Recycling day, a family birthday, taking your medication — the things you know but keep missing, back in front of you every time you pick up your phone. Write it, and it is on the widget One input field sits above the list. New notes are pinned by default, and only pinned notes reach the widget. No folders, no tags, no formatting — this app is the few lines you must not forget. Seeing notes on the Lock Screen · Lock Screen widget — press and hold the Lock Screen, tap "Customize" and then "Lock Screen", and add the Peekmo widget under the clock · Home Screen widget — press and hold an empty spot on the Home Screen and add it there · Pinned notes also stay visible in StandBy and on always-on displays Notes stay on the device No account, no server. Notes never leave the device, and deleting the app deletes them with it. Only the minimum is collected automatically: crash diagnostics (Firebase Crashlytics) and banner ad delivery (Google AdMob, non-personalized). No tracking. Free, with a banner ad Every feature is free. One banner ad sits at the bottom of the home screen. Privacy policy: https://cottonray.com/privacy/peekmo Contact: help@cottonray.com

Screenshots

Underlairs4 screens
Peekmo3 screens

Verdict

The call

The clearest difference is ads: Underlairs at none against Peekmo's shown. Underlairs also leads on device support (3 vs 1). Peekmo's advantage is update cadence (every 4 days vs every 3 weeks). On price, 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. Underlairs sells 3 in-app purchases, starting at $0.99 per month and Peekmo sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Underlairs ships an update every 3 weeks, Peekmo every 4 days. The most recent releases landed on September 23, 2026 and September 28, 2026 respectively.

Scorecard3 real differences · 7 level
Underlairs versus Peekmo: the parameters behind the verdict, then further details
ParameterUnderlairsPeekmo
PriceFreeFree
Rating5.0 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 3 weeksEvery 4 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.4
Further details — not scored
Size230 MB49 MB
Age rating4+4+
DeveloperJohn JangJEONG HYEON CHOI

In-app purchases

3 purchases

Underlairs

Subscriptions2
  • Monthly Premium$0.991 Month
  • Yearly Premium3 Days trial$9.991 Year
One-time1
  • Premium Lifetime Access$17.99
3 purchases

Peekmo

One-time3
  • 커피 한 잔$0.49
  • 커피 세 잔$1.99
  • 커피 다섯 잔$2.99

Questions

Is Underlairs free?
Underlairs is free to download, with in-app purchases available.
Is Peekmo free?
Peekmo is free to download, with in-app purchases available.
Do Underlairs or Peekmo have ads?
Peekmo shows ads; Underlairs does not.
Which is updated more often, Underlairs or Peekmo?
Underlairs ships an update every 3 weeks, and Peekmo every 4 days. Most recently, Underlairs was updated on September 23, 2026 and Peekmo on September 28, 2026.

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