Comparison

Koza vs Mossy

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

Head to head
About

Koza

Features
Read full description

Don't study alone. Focus together. Koza is a study app where you plan your tasks, focus with pomodoro and meet people working toward the same goal as you. Whether it's a university entrance exam, a civil service exam or your own goal, everything is easier with someone studying beside you. FIND: MEET YOUR STUDY BUDDY Each card shows the person's name, age, photos, level, goal, study hours and study place. Say hi or pass; the choice is always yours. You can also leave a short note. When you both say hi, or your request is accepted, you match and a chat opens. Filter by age, level and gender. For your safety, users aged 14-17 and adults never see each other. EVENTS AND LIVE STUDY ROOMS Join scheduled study events or create your own; we remind you before it starts. Everyone in the room works on a shared timer. Camera and microphone are completely optional, and video and audio are never recorded. TASKS AND POMODORO Write your tasks, give each one a duration and check them off as you go. Start solo, set your own focus and break lengths and study with focus sounds (rain, fireplace, waves). The timer also shows on the Lock Screen and in the Dynamic Island, where you can pause and resume it. FEED Share your questions, study notes and focus sessions; like and comment on what others share. PROGRESS MAP See your weekly study time, your streak and the tasks you finished. You decide who sees your showcase: everyone, your friends or only you. KOZA PLUS See who liked you and who left you a note, and accept right away. Use advanced filters (your city, what they're looking for, study place, shared interests, personality, study hours) to choose who you see. Hi's and notes are unlimited for everyone. Weekly and yearly subscriptions are available; cancel anytime in your App Store account settings. SAFETY Report and block are always at hand on every card and profile. Messages, notes, posts and profile photos are moderated before they are published. Reported content is reviewed within 24 hours, and violations lead to account suspension. You can delete your account anytime in Settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://koza.social/legal/privacy-policy

About

Mossy

Features
Read full description

Meet Mossy, a hand-drawn focus companion who keeps you company while you get things done. Mossy turns focus time into a small illustrated world. Start a session, work beside a cozy little blob, and come back to gentle rewards. Built with ADHD brains in mind, and made for anyone who wants focus to feel less like a fight. FOCUS WITH A FRIEND • Pomodoro cycles or a free count-up mode, your choice • Mossy quietly keeps you company while you work • A slide gesture ends the session, so one stray tap can't • Your countdown lives on the Lock Screen and in the Dynamic Island, with Mossy right there BREAKS THAT BRING YOU BACK • Finish a focus block and choose what feels right: keep going, or take a 2, 5, or 10 minute reset • Gentle notifications tell you when it is time to return • Starting the next focus is always the easy choice GENTLE REWARDS • Finished sessions fill Mossy's bag with Shiny Pebbles • Spend Pebbles in the Pebble Shop on hand-drawn decorations • Make the room yours: rug, chair, plants, toys, wall art and more • Every piece is original watercolor artwork, drawn by hand SMALL TASKS, REAL PROGRESS • Pick one small thing to focus on • Finish the task, earn the reward • Today's totals and your streak, always in sight THREE HAND-DRAWN ROOMS (PRO) • The original Mossy Nook, plus Brick Studio and Garden Room • Every room has day and night artwork • Pro replacement decor for every corner of the room AMBIENT SOUND • Rain, Fireplace, Waves, and White Noise, free • 19 soundscapes with custom mixing in Pro SEE YOUR RHYTHM (PRO) • Detailed statistics by day, week, month, and year • Task-level insights and best-streak history CALM BY DESIGN • No account, no sign-up, works offline • Anonymous usage analytics only, with an off switch in Settings • Your focus data stays on your device FREE & PRO The complete focus loop is free: timer, breaks, tasks, rewards, the Mossy Nook room, four sounds, a Home Screen widget, and your streak. Mossy Pro adds the extra rooms, all 19 sounds with mixing, custom focus cycles, advanced statistics, five app icons, and new room drops over time. Pro is a weekly or yearly subscription, or a one-time lifetime purchase. Mossy is a small illustrated world that happens to help you focus. No guilt, no streak-shaming, no pressure. Just you, a soft little blob, and the next 25 minutes. Terms of Use: https://mossy-app.online/terms/ Privacy Policy: https://mossy-app.online/privacy/

Screenshots

Koza4 screens
Mossy4 screens

Verdict

The call

The clearest difference is iOS requirement: Koza at 15.1 against Mossy's 17.0. 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. Koza sells 1 in-app purchase, starting at $29.99 per year and Mossy sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 5 level
Koza versus Mossy: the parameters behind the verdict, then further details
ParameterKozaMossy
PriceFreeFree
Update frequencyEvery 8 days—
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size72 MB212 MB
Age rating4+4+
DeveloperKOZA LLCClaudiu Valentin Sararu

In-app purchases

1 purchases

Koza

Subscriptions1
  • Koza Pro Yıllık$29.991 Year
3 purchases

Mossy

Subscriptions2
  • Mossy Pro Weekly$1.997 Days
  • Mossy Pro Yearly$14.991 Year
One-time1
  • Mossy Pro Lifetime$24.99

Questions

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

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