A brain training puzzle game where you can draw one line, which will increase your wisdom!
* Use One line to solve this pattern *
Activate and train your brain. "One Line" has only one simple rule: Only one line is used to solve this pattern. Drawing with one line, the position of the starting point is not important. Think carefully before starting to connect points in this puzzle game, use your logic and remember - you can't draw the same line twice! It sounds funny, Right?
* Unlock new challenge levels *
Try to solve as many puzzles as you can, unlock new levels to get your brain to the top! Let us start the adventure in this colorful world and bring some freshness to your life!
* More pleasure for your brain *
Train your intelligence and reasoning skills to enhance your memory, attention, intellectual flexibility, concentration and responsiveness, and bring hours of fun to your mind anytime, anywhere!

-" One Line " is free to play, but you can purchase In-app items like coins or subscribe our game.

- Premium Membership allows you unlock all levels and new updates, double daily login bonus, and remove Ads.
- Subscription price is $7.99 per week with 3-day free trial.
- Payment will be charged to iTunes Account at confirmation of purchase.
- Subscriptions automatically renew at the end of the period unless turned off at least 24 hours before the end of the current period in the account settings.
- Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal.
- Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's iTunes Account Settings after purchase.
- No cancellation of the current subscription is allowed during active subscription period.
- You may cancel a subscription during its free trial period via the subscription setting through your iTunes account. This must be done 24 hours before the end of the subscription period to avoid being charged. Please visit for more information.
- You may turn off the auto-renewal of your subscription via your iTunes Account Settings. However, you are not able to cancel the current subscription during its active period.
- Any unused portion of a free-trial period, will be forfeited when the user purchases subscription.

Privacy Policy
Terms of Use

What's New

Version 1.9.5

1. Bug fixed
2. New updates

Ratings and Reviews

4.7 out of 5

474 Ratings

474 Ratings



i absolutely loved this game. it is so addicting and calming, i got to level 190 or something and the next hour i went back on the app, only to have a different language (maybe chinese) instead of english. when i clicked on the words in the foreign language. it gave me a list of levels i had completed but it did not have every one, plus it skipped levels in between that i know i completed. i love this game but i don’t know how to change it back to how it was. :’(



Was really enjoying this game and now it just crashes every time I try to open it. Mega bummer.

Level 70

Desperate for a name

Level 70 is glitched or something there’s a bar that won’t be highlighted for me


Carter Thompson
102.4 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© One Line
In-App Purchases
  1. Membership $7.99
  2. Coin Pack1 $1.99
  3. One Time Offer Pack3 $7.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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