iPhone Screenshots


GREEiN Golf Putting Grain and Slope Reader

GREEiN, the app that gives instant info on grain and slope
Now get your grain reading in just ONE second!
Easier to use than ever before, GREEiN is sure to help your score!

Even pros admit that it’s difficult to read both the slope and the grain.
But with the new putt training app GREEiN, it’s a snap!

GREEiN has 3 easy-to-use functions:
GRAIN reader shows the roughness and direction of the grain!
SLOPE reader shows the degree and direction of the slope!
PUTT reader shows both, all at once!

All golfers who want to improve their score,
Everyone who wants to train their green reading skills,
GREEiN is the perfect app for you!
Enjoy golf even more with GREEiN!

This application was developed using open CV technology.

◎About the Functions
GRAIN reader:
Just take a photo of the green from knee-height with your smartphone facing towards the cup, and GRAIN reader will give you a reading for both the roughness and direction of the grain. Your result is visually displayed with easy-to-understand arrows showing direction. The number of arrows indicates the roughness of the grain in 3 levels.

SLOPE reader:
Just place your smartphone on the green facing towards the cup and SLOPE reader will give you a reading for both the degree and direction of the slope. Your result is visually displayed with easy-to-understand arrows showing direction. The degree of slope is indicated up to 21 degrees, by number and color.

PUTT reader:
Use both GRAIN reader and SLOPE reader all at once! Just perform the necessary steps for using each function at a single spot on the green and PUTT reader will give you a simultaneous reading for both slope AND grain! PUTT reader can give you just the hint you need to help predict how the condition of the green will affect your putting.

◎About TICKET Purchase
GRAIN reader and PUTT reader may be used for a period of 30 days after purchase. After that, you may continue to use these functions by purchasing an In App TICKET.

Tickets are priced as follows:
・30 day TICKET $2.99
・1 year TICKET $29.99

Your valid term of use is managed by Technocraft and iCloud. Be sure to enable iCloud before using GREEiN.

Compatible devices
iOS 8.0 and higher

What’s New

Version 1.90

* Fixed a bug in expiration alert display.
* Fixed the processing when network is not connected.
* Fixed the display timing of tutorial.
* Fixed the control of initial member registration.


Techno Craft.CO.,LTD.
37.7 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Japanese

Age Rating
Rated 4+
© 2016 Techno Craft Co., Ltd.
In-App Purchases
  1. 30 day TICKET $2.99
  2. 1 year TICKET $29.99


  • Family Sharing

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

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