Comparison

Kissa vs Mosslock

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

Head to head
About

Kissa

Features
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Kissa is a cozy Pomodoro timer that turns one task into a calming café ritual. Choose what you want to do, start Pomodoro or Count Up, and settle into your own illustrated coffee shop. Mix ambient sounds, complete focus sessions, earn cups, and unlock new characters and café details as your routine grows. Focus without punishment or pressure. Kissa gives you a quiet place to begin, restorative breaks, and an optional Gentle Nudge when you wander away. FOCUS YOUR WAY • Use Pomodoro for structured focus and breaks • Switch to Count Up for open-ended study, reading, or work • Choose a task before you begin, or start without one • Keep the screen awake while your session is active • Return gently with breathing and transition screens BUILD A SPACE THAT HELPS YOU START • Mix café ambience, rain, fire, keyboard sounds, noise, music, and more • Adjust each sound and save favorite mixes with Kissa Pro • Complete focus sessions to earn cups • Unlock characters, counters, plants, rugs, lamps, colors, and decorations KEEP YOUR NEXT STEP CLEAR • Capture simple to-dos without managing a complicated project system • Add tags and choose what you want to focus on now • Schedule future sessions and reminders with Kissa Pro SEE THE WORK YOU HAVE DONE • Review completed and canceled sessions in Timeline • Explore focus time, sessions, tasks, and streaks in Statistics • Watch your café grow along with your routine OPTIONAL APPLE INTEGRATIONS • Manually back up and restore your cups, unlocked items, tasks, history, and settings with private iCloud backups. Off by default, with no automatic synchronization between devices. • Save newly completed Focus sessions and Count Up sessions you explicitly finish as Mindful Minutes in Apple Health. Off by default; Kissa does not read Health data or export past history. • Export planned sessions from the Pro planner to Apple Calendar. Events remain independent copies, without automatic synchronization. GENTLE SUPPORT, YOUR CHOICE Choose Gentle Nudge for an optional reminder if you leave during Focus, or Open Table for a completely quiet session. Kissa never blocks your other apps. KISSA PRO Unlock advanced timers, custom breaks and cycles, the complete sound catalog, saved mixes, planning, Timeline, Statistics, custom tags, and access to additional café items, including items you can unlock with earned cups. Made for studying, working, reading, and anyone who wants a warmer, lower-pressure way to focus. Start free on iPhone and iPad. No Kissa account required Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Mosslock

Features
Read full description

Mosslock locks the apps that pull you away while you study, and turns every locked minute into your study record. PICK WHAT TO PAUSE Choose apps or whole categories once, like social media and games. Mosslock uses Apple's Screen Time features, so the apps you choose stay private, even from us. START A SESSION Pick a subject and a length (25, 50 or 90 minutes) and start. Paused apps show your moss instead of the feed. When the time is up, they open again on their own. A STUDY RECORD YOU CAN TRUST Only time your apps were really locked is counted. See today, this week and each subject at a glance. GROW A MOSS GARDEN Every finished session plants a patch of moss. Longer sessions grow bigger moss. Stop early and that patch withers. Keep your streak going day after day. FREE - Pause any apps and categories during sessions of up to 50 minutes - Up to 3 subjects - The last 7 days of records - Moss garden and Home Screen widget MOSSLOCK PRO - Your full study history - This month's report with a subject breakdown - Weekly study hours that start on their own - Strict mode for exam season - Study sessions up to 4 hours - Unlimited subjects PRIVATE BY DESIGN No account, no ads, no analytics. Your study records and the apps you choose stay on your iPhone. Purchases are processed by Apple and managed by RevenueCat with an anonymous ID. YOU'RE ALWAYS IN CONTROL You can stop a session in the app, and you can turn off Mosslock's Screen Time access in the Settings app at any time. Mosslock is a study tool, not medical treatment. SUBSCRIPTION Mosslock Pro is available as a yearly subscription with a 7-day free trial for eligible new subscribers ($29.99 per year), a monthly subscription ($5.99 per month), or a one-time Lifetime purchase ($59.99). Prices are in US dollars and may vary by country; your local price is shown in the app before you buy. Payment is charged to your Apple Account when you confirm the purchase or when the free trial ends. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the period ends. Manage or cancel in Settings > Apple Account > Subscriptions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://ootssu.com/mosslock/privacy.html

Screenshots

Kissa4 screens
Mosslock4 screens

Verdict

The call

The clearest difference is update cadence: Mosslock at every 4 days against Kissa's fortnightly. 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. Kissa sells 5 in-app purchases, starting at $9.99 per 3 months and Mosslock sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Kissa ships an update fortnightly, Mosslock every 4 days. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

Scorecard1 real difference · 5 level
Kissa versus Mosslock: the parameters behind the verdict, then further details
ParameterKissaMosslock
PriceFreeFree
Update frequencyFortnightlyEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size232 MB10 MB
Age rating4+4+
DeveloperChristian AndradeJIYULMOM

In-app purchases

5 purchases

Kissa

Subscriptions3
  • Kissa Pro Quarterly$9.993 Months
  • Kissa Pro Annual14 Days trial$19.991 Year
  • PRO Annualy Family$24.991 Year
One-time2
  • PRO - Lifetime$29.99
  • PRO Family Lifetime$39.99
3 purchases

Mosslock

Subscriptions2
  • Mosslock Pro Monthly$5.991 Month
  • Mosslock Pro Yearly7 Days trial$29.991 Year
One-time1
  • Mosslock Pro Lifetime$59.99

Questions

Is Kissa free?
Kissa is free to download, with in-app purchases available.
Is Mosslock free?
Mosslock is free to download, with in-app purchases available.
Do Kissa or Mosslock have ads?
Neither Kissa nor Mosslock shows ads.
Which is updated more often, Kissa or Mosslock?
Kissa ships an update fortnightly, and Mosslock every 4 days. Most recently, Kissa was updated on October 29, 2026 and Mosslock on October 26, 2026.

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