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

Key features:
Drawing bounding box, polygon, cubic bezier, line, and point
Label the whole image without drawing boxes
Label pixels with brush and superpixel tools
Export index color mask image and separated mask images
Export to the YOLO, KITTI, COCO JSON, and CSV format
Read and write in the PASCAL VOC XML format
Automatically label images using Core ML model
Auto-suggest speeds up selecting the object name
Customize the label dialog to combine with attributes
1-click buttons make your labeling work faster
Settings for objects, attributes, hotkeys, and labeling fast
Search images by label text
Convert video to image frames

The details are described on our support page.

RectLabel has Paid Subscriptions.

Title of service: Full App(1 Month)
Length of free trial: 1 Month
Length of subscription: 1 Month
Price of subscription: $2.99 per Month

Title of service: Full App(1 Year)
Length of free trial: 1 Month
Length of subscription: 1 Year
Price of subscription: $29.99 per Year

Payment will be charged to your Apple ID account after the 1 month free trial.
Subscription automatically renews unless it is canceled at least 24 hours before the end of the 1 month free trial.
Your account will be charged for renewal within 24 hours prior to the end of the 1 month free trial.
You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase.
Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable.

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 2.87

- Improved so that you can draw or edit the box as square pressing Shift key.
- Fixed the problem that annotator name is cleared when you close RectLabel without opening the settings dialog.

Ratings and Reviews

3.8 out of 5
25 Ratings

25 Ratings

bw4sz ,

Friendly Support

There have been some negative reviews on the app because of the change in price model. I've been using the tool for a year and found it extremely helpful and reliable. Worth the money, even if they charged you 1$ at first. Not a big deal. I can also say that i've twice submitted issues on the github repo and the developers were quick to add features.

Hazeo ,

Developer is deceptive and greedy

I echo other reviewers’ anger on the developer’s deception and greed, and cannot recommend this despite it being a simple but useful program.

We are forced to pay a 'new full price’ on an app we had purchased in order to continue using it. Us early adopters helped you by pushing the app up on the rankings, and making us pay more for using the same features is very poor practice. This is like buying a product on sale, then later asked to pay the full price. With my own iOS app which I increased price over time I DID NOT ask existing users to pay more. Loss of revenue is completely acceptable in this case.

If you want to charge for continued development, which is understanable, make new features as an in-app purchase without forcing existing users to pay more to use features they had access to before. This is very deceptive.

Developer Response ,

If you bought RectLabel before starting in-app purchase, you can ask us to send the version 1.96 which is just before the in-app purchase.
At first, restore purchase from app menu to make the app purchase receipt in your app to the latest one.
Then, zip and send RectLabel app(/Applications/ to
We would check the original app version which you bought, the transaction id for your payment, and the date when your app purchase receipt was updated.
If we could confirm, we would send the version 1.96 to you.

Before launching the version 1.96, be sure to "Export settings file for the old version" from app menu.
Otherwise when you launch the version 1.96, the current settings file would be cleared because the old version cannot read the current format.
Import the exported settings file after you launch the version 1.96.

The new update version 2.58 was released.

Ravijxyz ,

Good product

Works on laptop which is much faster and easier to use than a web based
Developer was super helpful in adding new requested feature and general debugging.
Everythin is 5 star. Documentation could be a little better but it is easy to figure out


Ryo Kawamura
15.9 MB
Developer Tools

OS X 10.10 or later, 64-bit processor



Age Rating
Rated 4+
© 2017-2019 RectLabel


  • Family Sharing

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