RectLabel Pro 4+

for object detection

Ryo Kawamura

    • 5.0 • 1 Rating
    • $15.99



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

Key features:
Draw bounding boxes and read/write in YOLO text format
Draw oriented bounding boxes in aerial images
Draw polygons, cubic bezier curves, line segments, and points
Draw keypoints with a skeleton
Label pixels with brush and superpixel tools
Read/write in PASCAL VOC xml or YOLO text format
Export to YOLO, Create ML, COCO JSON, and CSV formats
Export index color mask image and separated mask images
Settings for objects, attributes, 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/attribute 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 Pro" 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 free 3-day trial in the standard "RectLabel for object detection" version.

What’s New

Version 45

- New: For light mode, improved UI designs.

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

Mohamed ali sterling va ,

Awesome Annotation App

This app has so many capabilities and it's very easy to use. I mainly recommend this app over others becuse it can 1) output in COCO format (Json file), 2) can do keypoint and mask annotations and 3) can overlay depth maps to images. I love how there are so many shortcuts for most actions, and I can always change the shortcuts to my liking. I also use this app with Apple's side car to label on my iPad. I gave a tutorial- "how to use RectLabel" to 8 of my undergrads, and they all thoguht it was intuitive and easy to use. Customer service has been responsive, super helpful and has always addressed a lot of questions/concerns. The app is ALWAYS getting new bells and whistles added to it. The company listens to my feedback/needs and is willing to add new capabilities accordingly. I am very pleased with RectLabel, and would highly recommend it.

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.