RAKUZUMI
楽墨
RAKUZUMI is #88 in Business Grossing in Japan and charting in 1 of 24 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
DeveloperTOPCON CORPORATION
CategoryBusiness
PriceFree
Released
Rating★ 3.7 (11)
Version1.8.0
Age rating4+
First seen by us
27 Sep 2026
Rating
3.7 ★
11 ratings
Measured
Best rank now
#88
Measured
RAKUZUMI on the App Store
App details
App ID
1536529567
Publisher
TOPCON CORPORATION
Minimum OS
iOS 14.0+
Content rating
4+
Languages
2
EN JA
Size
50 MB
Where it ranks now
Every top chart it appears in across 24 countries.
| Country | Charts | Rank |
|---|---|---|
| BusinessGrossing | #88 |
Apps near RAKUZUMI on the chart
Business Grossing, around #88.
Ratings
App Store, worldwide.
Rating
3.7 ★
11 ratings
Measured
Ratings
11
Measured
About RAKUZUMI
This application can communicate with a layout navigator LN Series. By using this, you can perform the layout work of 3-dimensional design data and as-build measurement of 3-dimensional point data.
Key Features
- 3D point data measurement using radiation observation
- Guidance based on 3D design data
- Layout positioning (Horizontal beam top and Leveling string point)
- Distance measurement to boundaries
Pricing Plan
- Price: JPY 10,000 (tax included)
- Duration: 1 year (billing starts after a 30-day free trial)
Purchase Information
・Payment will be charged to your Apple Account at the time of purchase.
・Unless auto-renew is turned off at least 24 hours before the end of the current period, your subscription will automatically renew. Renewal charges will be applied within 24 hours after the current period ends.
・You can manage or cancel your subscription at:
Launch the Settings app > Apple ID > Subscriptions > Select RAKUZUMI > Cancel your subscription
・If you change devices, you can restore your previous purchase for free.
Launch the app > Tap the Hamburger button in the top bar > Store page > Restore Purchases
Make sure you are logged into the App Store with the same Apple Account used for the original purchase.
To use this application, the use of location information should be enabled.
This application can be used on devices with iOS 16 or higher.
For devices that cannot be installed, the message "Your devices is not compatible with this version" is displayed.
Please note that operation on all devices is not guranteed.
Tested Devices:
+iPhone 14 Plus(iOS 16.1)
+iPhone 14 Pro Max(iOS 17.0.2)
+iPhone 16 Pro Max(iOS 18.4)
The instruction manual can be downloaded from the TOPCON website.
Key Features
- 3D point data measurement using radiation observation
- Guidance based on 3D design data
- Layout positioning (Horizontal beam top and Leveling string point)
- Distance measurement to boundaries
Pricing Plan
- Price: JPY 10,000 (tax included)
- Duration: 1 year (billing starts after a 30-day free trial)
Purchase Information
・Payment will be charged to your Apple Account at the time of purchase.
・Unless auto-renew is turned off at least 24 hours before the end of the current period, your subscription will automatically renew. Renewal charges will be applied within 24 hours after the current period ends.
・You can manage or cancel your subscription at:
Launch the Settings app > Apple ID > Subscriptions > Select RAKUZUMI > Cancel your subscription
・If you change devices, you can restore your previous purchase for free.
Launch the app > Tap the Hamburger button in the top bar > Store page > Restore Purchases
Make sure you are logged into the App Store with the same Apple Account used for the original purchase.
To use this application, the use of location information should be enabled.
This application can be used on devices with iOS 16 or higher.
For devices that cannot be installed, the message "Your devices is not compatible with this version" is displayed.
Please note that operation on all devices is not guranteed.
Tested Devices:
+iPhone 14 Plus(iOS 16.1)
+iPhone 14 Pro Max(iOS 17.0.2)
+iPhone 16 Pro Max(iOS 18.4)
The instruction manual can be downloaded from the TOPCON website.
Latest updates
1.8.0
Ver.1.8.0
+ Supported the functions of the new LN series model, "LN-1000i".
- High-speed prism locking using real-time video with the camera function
- Non-prism measurement in locations where prism installation is not possible
- Self-inspection and calibration of the main unit using the angle adjustment function