Supported Features
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Larger Text
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Dark Interface
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Differentiate Without Color Alone
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Reduced Motion
ECHO - Time Loop Puzzle
Cooperate with your past self
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Your echoes are your teammates.
ECHO is a time-loop puzzle: every run is recorded, and when you press ECHO, your past self replays it - step by step, loop after loop. Hold plates for each other, open doors across time, and thread paths no single runner could ever take.
EASY TO LEARN, DEEP TO MASTER
- 100 campaign levels across ten decades, from gentle first steps to choreographed finales
- Mechanics that weave together: chained doors, counter-doors, double doors, fragile floors, beat walls, paradox boards and mirror echoes that replay your run backwards
- Handcrafted signature levels where every single step must be planned
FOUR WAYS TO PLAY
- Campaign: 100 levels with a carefully tuned difficulty curve
- Daily puzzle: one fresh board every day - keep your streak alive
- Zen: endless generated puzzles in six difficulties
- Time challenge: how many boards can you solve in one run against the clock?
MADE WITH CARE
- Completely offline: no account, no ads, no tracking, no data collection
- Music is synthesized live on your device - no two sessions sound the same
- Home-screen widget that grows with your streak - and hides a secret level
- Game Center leaderboards and achievements
- Available in 7 languages
ECHO is free and complete from the first minute. The only purchases are voluntary tips for the developer - they unlock nothing.
Your past self is waiting.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New in 1.0.3: Tapping the widget now jumps straight into the daily puzzle. In the evening, ECHO can warn you when your streak is at risk. Also: notifications in your chosen app language, Reduce Motion support, better text scaling, and many small stability and accessibility improvements.
The developer, Lucas Hesseldieck, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- Lucas Hesseldieck
- Size
- 3.1 MB
- Category
- Puzzle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 6 more
- English, Czech, Dutch, French, German, Italian, Polish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Generous tip $8.99
- Custom tip $4.00
- Coffee tip $2.99
- Small tip $0.99
- Copyright
- © 2026 Lucas Hesseldieck (earls studio)
