Kotoro vs Efemeris
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Kotoro
An atmospheric puzzle game where you mix colors to achieve target hues. Explore 8 chapters and 96 unique challenges based on fundamental color theory principles. Enjoy a relaxing experience with a beautiful soundtrack and minimalist design.
- Color mixing puzzles
- 8 chapters with unique mechanics
- 96 challenging levels
- Atmospheric soundtrack
- Minimalist and dreamy visuals
- iCloud progress sync
Read full descriptionHide full description
"The visuals in Kotoro are simply beautiful." - AppAdvice "Based on a simple but effective principle." - MacGeneration "Something different to do at every turn." - 148Apps Featured by Apple as one of the Best New Games Kotoro is the first atmospheric puzzle game about color mixing based on the rules we all learn as children. Your objective is simple: Become a certain color by mixing with others. - 8 Chapters, 96 puzzles: Each chapter explores a new idea such as subtraction, replication or time - No Ads. No In-App Purchases. - Atmospheric soundtrack powered by 7 talented musicians from around the world - Fully localized for French, Chinese, Japanese and Spanish - Sync your game progress with iCloud - Minimalist, dreamy and beautiful - Ambient and relaxing experience
Efemeris
Read full descriptionHide full description
Two fleets face each other across a star map that does not exist yet. You build it, one tile at a time, as you explore. A turn-based board game duel, played solo against the AI or with a friend across phone, tablet and PC. A game lasts about twenty minutes. HOW YOU WIN First to conquer five planets in ten turns takes it. Lose every planet you hold and the game ends there. EVERY TURN, FOUR DECISIONS • Explore — place a tile and open a new stretch of the Celestial Vault • Harvest — collect Star Pepper and Celestial Vanilla from the trading posts you hold • Manoeuvre — move your galleon and frigates, spend your crew cards • Build — buy frigates, raise fortresses, pay a planet's price THREE NATIONS, THREE WAYS TO PLAY The British Royal Navy, the French Royal Navy or the Spanish Armada. Each fields its own captains and its own crew: the Spanish Governor talks a planet's price down, the French Lady of the Night fills your holds, the Gunner opens fire. You pick two captains and five crew members before the first tile is laid. That choice shapes the whole game. NOTHING IS FREE Your holds never exceed five spices. Firing costs a Gunner card. Your captain's ability only triggers if a Chief mate is there to relay the order — and if your galleon falls, your captain goes down with it. SOLO OR TWO PLAYERS • Solo — face an AI that drafts its hand, plays its cards and races you to the fifth planet • Duel — play a friend across Android, iOS and PC HAND-DRAWN CELESTIAL CHARTS Engraved constellations, gilded compass roses and inked portraits: Efemeris is played on an old star atlas that slowly fills with light. A complete game. No ads, no in-app purchases. Available in English and French.
Screenshots
Verdict
The clearest difference is update cadence: Kotoro at every 6 weeks against Efemeris's every 8 months. Kotoro also leads on price ($0.99 vs $3.99) and iOS requirement (13.0 vs 15.0). On 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
Kotoro costs $0.99 and Efemeris $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Kotoro ships an update every 6 weeks, Efemeris every 8 months. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.
| Parameter | Kotoro | Efemeris |
|---|---|---|
| Price | $0.99 — better | $3.99 |
| Rating | 4.7 (118 ratings) — better | — |
| Positive reviews | 90.6% of reviews | — |
| Number of ratings | 118 — better | — |
| Update frequency | Every 6 weeks — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 108 MB | 130 MB |
| Age rating | 4+ | 4+ |
| Developer | Semidome Inc. | DTDA Games |
Bugs and requests
Kotoro
Reported bugs
4 issues- Music doesn't play on iPhone (works on iPad)
- App crashes frequently
- Incompatible with iOS 11 and newer (32-bit limitation)
- App compatibility warning on newer iOS versions
Requested features
10 requests- More levels and content
- Sound toggle/mute option
- Colorblind mode with textures or symbols
- Additive color (RGB) mixing levels
- On-demand tutorial system
Show 5 moreShow fewer
- Automatic progression to next level upon completion
- Visual feedback for level completion
- iOS 11+ and 64-bit app update
- Better chapter/progress indicators
- Increased spatial puzzle complexity
Efemeris
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Kotoro
No in-app purchases
Efemeris
No in-app purchases









