Comparison

Pepper Day vs Underlairs

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

Head to head
About

Pepper Day

Features
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Pepper Memorial Day is a mobile app designed for efficient time management. Plan and manage your time effortlessly, with regular check-ins, expiration reminders, and special day alerts. Key Features: Special Day Records: Supports Chinese lunar birthdays and custom important dates. Countdown Timer: Second-level countdowns for events and deadlines. Goal Check-ins: Set reminder frequency, track your progress, record reflections, and view check-ins on a timeline to build good habits. Expiration Reminders: Automatically calculate expiration based on production dates and product shelf life. Set early reminders to prevent waste. Tips: Expiration headers change color automatically; red means attention required! Goal check-ins can be shared with friends and viewed on the web. Lunar calendar reminders automatically calculate the next date after expiration. Contact Us: X (Twitter) Account: @CoolTeamPlus Email: hdd@hdd.im

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.

Screenshots

Pepper Day4 screens
Underlairs4 screens

Verdict

The call

The clearest difference is ads: Underlairs at none against Pepper Day's shown. Pepper Day's advantage is iOS requirement (13.0 vs 15.0). On price, update cadence, 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. Pepper Day sells 4 one-off in-app purchases and Underlairs sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Pepper Day ships an update monthly, Underlairs every 3 weeks. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
Pepper Day versus Underlairs: the parameters behind the verdict, then further details
ParameterPepper DayUnderlairs
PriceFreeFree
Rating—5.0 (8 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—8 — better
Update frequencyMonthlyEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size52 MB230 MB
Age rating4+4+
Developer松琴 臧John Jang

In-app purchases

4 purchases

Pepper Day

One-time4
  • 懒猪金币+20$0.99
  • 懒猪金币+400$2.99
  • Century VIP Access (Ad-Free)$6.99
Show 1 more
  • Cicada All-Access Ultimate VIP$14.99
3 purchases

Underlairs

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

Questions

Is Pepper Day free?
Pepper Day is free to download, with in-app purchases available.
Is Underlairs free?
Underlairs is free to download, with in-app purchases available.
Do Pepper Day or Underlairs have ads?
Pepper Day shows ads; Underlairs does not.
Which is updated more often, Pepper Day or Underlairs?
Pepper Day ships an update monthly, and Underlairs every 3 weeks. Most recently, Pepper Day was updated on November 7, 2026 and Underlairs on November 5, 2026.

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