Comparison

Underlairs vs Apsis

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

Apsis

Read full description

Apsis is not just another to-do list or Pomodoro timer. It turns one task into a quiet focus voyage, helps you protect the session, and saves every completed effort as a planet in your personal galaxy. When you know what you need to do but cannot start, choose one destination in Apsis. Add a task fast, place timed work on today’s timeline, and launch a focused session without building a complicated productivity system. Key features - Fast task capture for today’s work - Timeline view for timed tasks and calendar events - Pomodoro and custom focus timers - Calendar events that can become tasks - Local reminders and launch notifications - Completed task and focus session logs - Planet and galaxy records after completion - Soundscapes for quiet deep work - Home Screen widget and shareable completion cards Deep Space subscription features - Screen Time based app blocking during focus - AI Launch Control for tasks and calendar events - Notification actions for upcoming sessions - Planet discovery after every completed voyage - Deeper focus protection and routine settings Apsis is built for people who want to finish real work: - Students preparing for exams or study blocks - Writers, makers, freelancers, and solo builders - Anyone who gets pulled away by social apps, short-form video, or messages - People who want tasks, calendar, focus timer, app blocker, and logs in one calm app - Users who prefer a quiet ritual over a noisy productivity dashboard You can start free with tasks, basic focus voyages, and completion records. Deep Space adds calendar integration, AI launch guidance, and distraction blocking when you want stronger protection. Screen Time based app blocking requires your explicit iOS permission. Calendar features only use events you choose to allow. Subscriptions are billed through your App Store account and can be managed or canceled in Apple ID subscription settings. Privacy Policy : https://app.notion.com/p/mindtouch/Apsis-Privacy-Policy-37b7610c206b801291c2c52dda6d27e2?source=copy_link Terms of Service : https://mindtouch.notion.site/Apsis-Terms-of-Service-37b7610c206b806c81f4ecabd83435cd?source=copy_link

Screenshots

Underlairs4 screens
Apsis4 screens

Verdict

The call

The clearest difference is iOS requirement: Underlairs at 15.0 against Apsis's 18.6. On price, ads, in-app purchases and device support 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 Apsis sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 9 level
Underlairs versus Apsis: the parameters behind the verdict, then further details
ParameterUnderlairsApsis
PriceFreeFree
Rating5.0 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.6
Further details — not scored
Size230 MB32 MB
Age rating4+12+
DeveloperJohn JangSeungrae Cho

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

Apsis

Subscriptions2
  • deepspace monthly subscription$2.991 Month
  • deepspace annual subscription7 Days trial$17.991 Year
One-time1
  • Apsis Lifetime Pass$59.99

Questions

Is Underlairs free?
Underlairs is free to download, with in-app purchases available.
Is Apsis free?
Apsis is free to download, with in-app purchases available.
Do Underlairs or Apsis have ads?
Neither Underlairs nor Apsis shows ads.

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