Comparison

Grass vs Mito

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

Head to head
About

Grass

Features
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Grass — Focus, Visualized Turn your focused time into visible progress. Grass is a simple focus timer and session tracker that transforms every completed session into a colorful block on your daily timeline and a patch in your growing field. See when you focused, when you rested, and how your focus habits develop over time. There is no complicated productivity system to manage. Choose a duration, start the timer, and focus on what matters. Whether you prefer short study sessions or longer deep-work blocks, every completed session becomes part of your progress. Grow your Grass. Grow yourself. Key Features - Simple Focus and Break Timer Start a focus or break session in seconds with a clean, distraction-free interface. - Daily Focus Timeline See exactly when you focused, rested, and completed each session throughout the day. - Visual Focus History Explore your focus patterns across days, weeks, and months as your completed sessions grow into a field. -Focus Statistics Check your completed sessions, total focus time, break count, and break time at a glance. -Flexible Session Tracking Name your activities, choose colors, and edit or delete completed sessions whenever needed. -Study and Deep-Work Support Use Grass for studying, reading, writing, creative work, daily routines, or Pomodoro-style focus sessions. -iCloud Sync Keep your focus history synchronized across your Apple devices. -Light and Dark Mode Use Grass comfortably throughout the day and night.

About

Mito

This app transforms studying into an engaging pixel-art RPG. Earn rewards, battle monsters with your knowledge, and collect unique characters by mastering flashcards and focus sessions. It makes spaced repetition enjoyable and habit-forming.

Highlights
  • Spaced repetition with FSRS algorithm
  • Turn-based battles powered by flashcard answers
  • Collect and level up biobud characters
  • Focus timers with optional in-app lock
  • Study together with friends and classes
  • Offline progress saving
  • Import custom decks
Read full description

Mito turns studying into a pixel-art RPG. Every flashcard you review powers a turn-based battle, every focus session earns rewards, and every study streak grows your team of biobuds. It's spaced repetition you'll actually look forward to. STUDY THAT FIGHTS FOR YOU Mito schedules your cards with FSRS — a modern spaced-repetition algorithm — so you review exactly what you're about to forget. Grade yourself the classic way, tap through multiple choice, or type your answer and let AI check it. BATTLE WITH WHAT YOU LEARN Answer cards to charge your party's abilities and take down bosses across a campaign and an endless mode. Get a card right and your biobuds strike harder. Studying and playing are the same loop. COLLECT & GROW BIOBUDS Earn eggs by studying, then hatch a collection of cellular heroes — each with their own abilities, personalities, and rarities. Level them up, build your team, and feature your favorite on your profile card. LOCK IN WITH FOCUS SESSIONS Run focus timers that reward deep work with in-game currency and eggs. An optional stay-in-app lock keeps you honest during a session. STUDY TOGETHER Add friends with a code or invite link, see who's grinding this week on the league, and create or join study classes to share decks. Go further with Mito Pro: co-op focus sessions and head-to-head PvP deck duels. YOURS, OFFLINE Study, battle, keep your streak, and earn rewards with no connection — your progress is saved on-device first and syncs when you're back online. Sign in to sync across devices, or play anonymously. EVERYTHING ELSE • Daily quests and streaks that keep you coming back • A home-screen widget for due cards, streak, and quests • Import your own decks or start from built-in starters • Account and all data deletable any time from Settings Whether you're cramming for an exam, learning a language, or building a daily study habit, Mito makes the reps feel like a game — because they are. Mito Pro is an optional auto-renewing subscription (monthly or yearly) that unlocks unlimited decks and classes, co-op focus sessions, and PvP deck duels. You can study the core game for free, forever. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://studymito.app/privacy

Screenshots

Grass3 screens
Mito4 screens

Verdict

The call

The clearest difference is in-app purchases: Grass at none against Mito's 2. Mito's advantage is update cadence (every 3 days vs every 9 days). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Mito sells 2 in-app purchases, starting at $5.99 per month. Grass asks for nothing beyond the download.

UpkeepUpdate frequency

Grass ships an update every 9 days, Mito every 3 days. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 7 level
Grass versus Mito: the parameters behind the verdict, then further details
ParameterGrassMito
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 9 daysEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhoneiPhone
Requires iOS18.018.0
Further details — not scored
Size5 MB104 MB
Age rating4+12+
DeveloperPaul KimYukitaka Watanabe

In-app purchases

None

Grass

No in-app purchases

2 purchases

Mito

Subscriptions2
  • Mito Pro Monthly$5.991 Month
  • Mito Pro Yearly$34.991 Year

Questions

Is Grass free?
Grass is free to download, with no in-app purchases.
Is Mito free?
Mito is free to download, with in-app purchases available.
Do Grass or Mito have ads?
Neither Grass nor Mito shows ads.
Which is updated more often, Grass or Mito?
Grass ships an update every 9 days, and Mito every 3 days. Most recently, Grass was updated on October 11, 2026 and Mito on October 12, 2026.

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