Underlairs vs BrewFocus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
BrewFocus
Recreate the productive atmosphere of a cafe anywhere, anytime. Choose your virtual coffee and watch it empty as you focus, with ambient sounds and changing views to enhance concentration.
- Virtual cafe ambience
- Customizable focus sessions
- Visual progress tracking
- Ambient soundscapes
- Dynamic visual scenes
- Session history and stats
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You pack your laptop and walk to a café — not because you need coffee, but because you can't focus at home. The hum, the clatter, the stranger typing across the room. Somehow, that's where the work happens. BrewFocus is that café — open whenever you need it. HOW IT WORKS Open the door. Order your drink — and your drink is your focus session. Espresso for a quick sprint. Pour over for the long haul. Grind the beans, take a seat by the window, and start. Then just work. The café hums around you. Your coffee slowly empties. When the cup runs out, you're done. THE RITUAL • Stepping inside — a quiet café by the sea, and the camera moves in • Ordering a drink — espresso runs 25 minutes, hand drip runs 3 hours • Grinding the beans — the sound that tells your brain it's time • Choosing a seat — window table, stool across the room, a spot at the bar. Every seat, a different view • Watching the coffee go down — the time you have left isn't a number, it's in the cup WHY IT WORKS Your brain doesn't need more willpower. It needs the right environment. A moderate hum of café noise can boost creative thinking — the "Café Effect." BrewFocus rebuilds it: the ambience, the light, the view out the window. You're not staring at a countdown. You're sitting in a café, getting things done. WHAT'S INSIDE • A living café — waves outside the window, trees swaying in the woods. Not a still image, but a scene that actually moves • A view that changes with your seat — sit by the window and you face the sea; sit at the bar and you face the counter • A cup that empties — you watch time pass instead of counting it • Coffee order receipts — a record of every session • Ambient sound — café noise, rain, waves, forest, fireplace, lo-fi A café is a "third place" — not home, not the office. Somewhere you go to get into your own head. Now you can go there anytime. SUBSCRIPTION DETAILS • Subscription plans: BrewFocus Premium — Yearly (auto-renews yearly) / Monthly (auto-renews monthly) • Price: $19.99 per year or $3.99 per month (prices may vary by region) • A subscription unlocks all ambient sounds and focus music, plus full focus history and stats. • Payment will be charged to your Apple Account at confirmation of purchase. • Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. • To cancel, go to iPhone Settings → your Apple Account → Subscriptions and select "BrewFocus Premium". Terms of Use (EULA): https://shocking-clover-8f4.notion.site/Focus-Coffin-Terms-of-Service-39cb4564dcb7815fa361e2a36f399ee1 Privacy Policy: https://shocking-clover-8f4.notion.site/Focus-Coffin-Privacy-Policy-39cb4564dcb7819abdc9cc20db9bed48
Screenshots
Verdict
The clearest difference is update cadence: BrewFocus at weekly against Underlairs's every 3 weeks. Underlairs's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). 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
Both are free to download. Underlairs sells 3 in-app purchases, starting at $0.99 per month and BrewFocus sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Underlairs ships an update every 3 weeks, BrewFocus weekly. The most recent releases landed on September 7, 2026 and September 22, 2026 respectively.
| Parameter | Underlairs | BrewFocus |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (7 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 7 — better | — |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 230 MB | 284 MB |
| Age rating | 4+ | 4+ |
| Developer | John Jang | HYUNG SOON CHOI |
Customer experience
Underlairs
BrewFocus
In-app purchases
Underlairs
- Monthly Premium$0.991 Month
- Yearly Premium3 Days trial$9.991 Year
- Premium Lifetime Access$17.99
BrewFocus
- Monthly$3.991 Month
- Yearly$19.991 Year
- Lifetime$29.99









