Comparison

Koza vs StudyDuo

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

StudyDuo

Read full description

Studying alone is harder than it should be, and it isn't your discipline. Most people focus better when someone else is working next to them. StudyDuo puts you in a live video room with people who are working right now. No talking, no meetings, no small talk. You sit down and start. People call this body doubling or "study with me". Here it's live and open 24/7. HOW IT WORKS 1. Open Focus Room, a silent video room that never closes. 2. Write what you're working on and pick 30, 60, 90 or 120 minutes. 3. Point your camera at your face or your desk, or keep it off. 4. Work. Your task shows under your name, and everyone around you is working too. THREE WAYS TO STUDY Focus Room: walk in whenever you need to focus. Cameras on, microphones off. Study Hour: once a day, everyone studies at the same time. Two 25-minute focus blocks with a 5-minute break, then a check-in: did you get it done? 1:1 with a study partner: want one focus partner instead of a whole room? Post a time on the board, now or within a week. Whoever joins comes straight into the video with you. Tap the microphone to talk, or use the chat. KEEP GOING • Streak: 30 minutes a day, in one go or a few, counts the day. Freezes save your streak when you miss one. • Hours and shields: your study time adds up, and your top shield shows next to your name. • Tasks: plan your days with reminders. Tap Work on this, and your task shows in the room. • Daily reminder: pick a time, and we'll nudge you every day. PEOPLE WHO KEEP YOU GOING • Double-tap a video to send a like. • Pin the people who motivate you, and they stay at the top of your grid. • Follow them, message them, and get a notification when they start studying. • Post in the feed. • Show the song you're playing on your tile with Apple Music. YOUR CAMERA, YOUR RULES • Your camera starts off. You decide when it goes on. • Face or desk: show yourself, or only your hands and notes. • Choose who sees your video: everyone, people with their camera on, people with a verified photo or, with Premium, only Premium members. Others see a blurred silhouette. • Step away anytime: your camera pauses, and others see you're away. • A selfie check puts a blue mark next to your name. Only our team sees the selfie, and we delete it right after the check. • Teens 16–17 have their own rooms, separate from adults. Video rooms aren't available under 16. • Rooms aren't recorded. You can report or block anyone from their video. FREE AND PREMIUM Everyone gets an hour of video rooms a day, plus tasks, streaks, badges, chat and the feed. New accounts get 14 days of Premium for free. When they end, you choose whether to keep it. Premium adds: • Video rooms without the daily limit • HD video • 2 boosts a day: first on everyone's grid for an hour • 5 streak freezes a month instead of 2, and one more every 5 days in a row instead of every 7 • Dark theme • Show your video only to Premium members Superboost is a one-time purchase, not a subscription: 5 hours first on everyone's screen. Made for students, exam prep, remote workers, writers, coders and anyone who gets more done next to someone else. Terms of Use: https://studyduo.app/terms Privacy Policy: https://studyduo.app/privacy

Screenshots

Koza4 screens
StudyDuo4 screens

Verdict

The call

Koza and StudyDuo are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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 StudyDuo sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Koza ships an update every 8 days, StudyDuo every 2 weeks. Both last shipped on November 5, 2026.

ScorecardNo meaningful differences
Koza versus StudyDuo: the parameters behind the verdict, then further details
ParameterKozaStudyDuo
PriceFreeFree
Update frequencyEvery 8 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better16.4
Further details — not scored
Size72 MB90 MB
Age rating4+4+
DeveloperKOZA LLCOleh Shapoval

In-app purchases

1 purchases

Koza

Subscriptions1
  • Koza Pro Yıllık$29.991 Year
4 purchases

StudyDuo

Subscriptions2
  • Premium Monthly$4.991 Month
  • Premium Yearly$49.991 Year
One-time2
  • Superboost$0.99
  • 10 Superboosts$4.99

Questions

Is Koza free?
Koza is free to download, with in-app purchases available.
Is StudyDuo free?
StudyDuo is free to download, with in-app purchases available.
Do Koza or StudyDuo have ads?
Neither Koza nor StudyDuo shows ads.
Which is updated more often, Koza or StudyDuo?
Koza ships an update every 8 days, and StudyDuo every 2 weeks. Most recently, Koza was updated on November 5, 2026 and StudyDuo on November 5, 2026.

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