"RectLabel - One-time payment" is a paid up-front version of RectLabel and fully feature equivalent with "RectLabel for object detection". If you want to test RectLabel please take advantage of the 1 month free trial in the standard "RectLabel for object detection" version.

An image annotation tool to label images for bounding box object detection and segmentation.

Key features:
Draw bounding box, polygon, cubic bezier, and line
Draw keypoints with a skeleton
Label pixels with brush and superpixel tools
Automatically label images using Core ML models
Settings for objects, attributes, hotkeys, and labeling fast
Read and write in PASCAL VOC XML format
Export to YOLO, Create ML, COCO JSON, and CSV formats
Export index color mask image and separated mask images

The details are described on our support page.

Privacy policy:

Terms of Use:

Post the problem to our Github issues page.

Have questions?
Send an email to

Thank you.

What’s New

Version 3.04.4

- Fixed the problem when you use "Label pixels" and "Skip label dialog when create" at the same time.

App Privacy

The developer, Ryo Kawamura, 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.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


Ryo Kawamura
18.6 MB

OS X 10.10 or later, 64-bit processor



Age Rating


  • Family Sharing

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