Comparison

Underlairs vs Ambient Timer

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

Ambient Timer

Features
Read full description

A timer that creates space — for stillness, and for deep focus. Paired with field recordings and ambient film — crafted by a single artist, not a sound library. Sounds and visuals by Chisato Ohori, whose work has been exhibited at Kunstpavillon, a historic contemporary art gallery in Munich. Set the ring. Press play. Let time pass. Optionally, pair your session with field recordings or ambient film — or keep it in silence. When the timer ends, a break mode continues the same atmosphere, so the transition from focus to rest feels natural. A minimal ring interface. A gentle bell to close each session. And a record of every session, quietly accumulating over time. The timer, sound selection, and session history are free. Field recordings and ambient film are available with Unlimited — a one-time purchase of $2.99.

Screenshots

Underlairs4 screens
Ambient Timer4 screens

Verdict

The call

The clearest difference is update cadence: Underlairs at every 3 weeks against Ambient Timer's every 2 months. Underlairs 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. Underlairs sells 3 in-app purchases, starting at $0.99 per month and Ambient Timer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Underlairs ships an update every 3 weeks, Ambient Timer every 2 months. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
Underlairs versus Ambient Timer: the parameters behind the verdict, then further details
ParameterUnderlairsAmbient Timer
PriceFreeFree
Rating5.0 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.6
Further details — not scored
Size230 MB193 MB
Age rating4+4+
DeveloperJohn JangChisato Ohori

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
1 purchases

Ambient Timer

One-time1
  • Unlock Unlimited$2.99

Questions

Is Underlairs free?
Underlairs is free to download, with in-app purchases available.
Is Ambient Timer free?
Ambient Timer is free to download, with in-app purchases available.
Do Underlairs or Ambient Timer have ads?
Neither Underlairs nor Ambient Timer shows ads.
Which is updated more often, Underlairs or Ambient Timer?
Underlairs ships an update every 3 weeks, and Ambient Timer every 2 months. Most recently, Underlairs was updated on October 9, 2026 and Ambient Timer on October 7, 2026.

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