Tracer: One Line Puzzle
One stroke, one line
Free · Designed for iPad. Not verified for macOS.
Trace every line in one continuous stroke. Hand-made puzzles with sound, haptics, and dark mode. New levels ship often.
Tracer is a one-stroke puzzle.
Each level is a figure of connected dots. Trace every line in one continuous stroke: no lifting your finger, no going over a line twice.
Simple to pick up. Deceptively tricky to finish.
WHY YOU'LL KEEP PLAYING
- Hand-made levels, tuned by feel and ordered from gentle to brutal
- A level map that draws itself: your progress is one continuous line
- Every connection plays a note, and solving a level lands the chord
- Lines ring like plucked strings, with haptics to match
- Dark mode that follows your phone
- Short sessions, no ads, no timers
THE RULE IS THE WHOLE GAME
If a figure has more than two dots where an odd number of lines meet, it cannot be traced in one stroke. Every Tracer level can be. Finding the path is on you.
Made by one person. More levels are always coming. If you enjoy it, a review genuinely helps.
Four new hand-made levels and a louder, cleaner sound.
- New levels: shadow, steps, clover, and window (16 total)
- Notes and chords are much louder, tuned for the iPhone speaker
- The win chord now fades out smoothly instead of cutting off
Beta note: levels were reordered, so earlier progress may point at different puzzles.
The developer, Justin Torre, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Justin Torre
- Size
- 25.1 MB
- Category
- Puzzle
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Justin Torre