RectLabel YOLO 4+

for object detection

Ryo Kawamura

    • $7.99



An image annotation tool to label images for bounding box object detection in the YOLO text format.

Key features:
Draw bounding boxes and read/write in YOLO text format
Draw oriented bounding boxes in aerial images
Export to Create ML, COCO JSON, and CSV formats
Settings for objects, hotkeys, and labeling fast
Automatically label images using Core ML models
1-click buttons speed up selecting the object name
Auto-suggest works for more than 5000 object names
Search object names and image names
Video to frames, augment images, etc.

How to use

Privacy policy

Terms of Use

Post the problem to our Github issues page.

Have questions?
Send an email to

Thank you.


"RectLabel YOLO" is a sub feature set of "RectLabel for object detection". If you want to test RectLabel please take advantage of the free 3-day trial in the standard "RectLabel for object detection" version.

What’s New

Version 45

- New: For light mode, improved UI designs.

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 Linked to You

The following data may be collected but it is not linked to your identity:

  • Purchases
  • Identifiers

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


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.