Underlairs vs MapBrief
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.
MapBrief
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[Draw Your Thoughts and Memories on the Map, Map Brief] Sometimes, simply saving a location isn't enough. Details like "Enter through this alley for the entrance" or "The view is best from this exact spot" are hard to capture with text alone. Map Brief is the most intuitive map recording app that lets you sketch directly on the map with a pen and pin photos to specific spots to capture the moment. [Key Features] - Freeform Map Drawing Draw paths, zones, and notes freely on the map using your Apple Pencil or finger. Intuitively visualize complex directions, hiking trails, or your personal walking courses. - Vivid Photo Markers Drag and drop photos to pin them to specific locations. Check restaurant menus, travel sceneries, or site conditions exactly where they happened on the map. - Various Map Modes Choose the map that fits your needs, from clean standard maps for clarity to immersive satellite views for reality. [Recommended For] Foodie Explorers: Those who want to build their own restaurant map complete with menu photos. Travel Planners: Those who want to visually organize travel routes and key spots. Field & Site Surveyors: Those who need to note real estate locations or site specifics directly on the map. Complete your own personal map with Map Brief today.
Screenshots
Verdict
The clearest difference is in-app purchases: MapBrief at none against Underlairs's 3. MapBrief also leads on update cadence (every 5 days vs every 3 weeks). On price, ads, device support 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
Both are free to download. Underlairs sells 3 in-app purchases, starting at $0.99 per month. MapBrief asks for nothing beyond the download.
Underlairs ships an update every 3 weeks, MapBrief every 5 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.
| Parameter | Underlairs | MapBrief |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 230 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | John Jang | Heechan Kang |
In-app purchases
Underlairs
- Monthly Premium$0.991 Month
- Yearly Premium3 Days trial$9.991 Year
- Premium Lifetime Access$17.99
MapBrief
No in-app purchases









