RectLabel

Plans and prices

Every plan, in full

On the record

Annotation types

The app supports polygons, pixels, bounding boxes, cubic Bezier curves, line segments, points, oriented bounding boxes, and skeleton keypoints.rectlabel.com · read 9 Oct 2026

Compatibility

The App Store listing says RectLabel requires macOS 13.5 or later and is for Mac only.apps.apple.com · read 9 Oct 2026

Data privacy

The maker's privacy policy says it does not collect images or annotation data.rectlabel.com · read 9 Oct 2026

Export formats

RectLabel exports to YOLO, COCO, CreateML, and DOTA, as well as indexed color and grayscale mask images.rectlabel.com · read 9 Oct 2026

Integration

For larger deployments, the maker recommends assigning app licenses to devices through Apple Business Manager managed licenses.rectlabel.com · read 9 Oct 2026

Maker history

Ryo Kawamura says he is an independent full-stack engineer from Tokyo and released RectLabel's first version in 2017.rectlabel.com · read 9 Oct 2026

Models

It supports polygon and pixel labeling with Segment Anything Model 2 and Cellpose, and automatic labeling with Core ML models including RF-DETR and YOLO26.rectlabel.com · read 9 Oct 2026

Network use

The maker says RectLabel Pro has no network connections because it has no in-app purchases.rectlabel.com · read 9 Oct 2026

OCR

The app provides automatic text recognition for lines and words.rectlabel.com · read 9 Oct 2026

Purpose

RectLabel is an offline image annotation tool for object detection and segmentation.rectlabel.com · read 9 Oct 2026

SAM 3

Text and box prompts from Segment Anything Model 3 can label multiple objects at once.rectlabel.com · read 9 Oct 2026

Search and workflow

Users can configure objects, attributes, and hotkeys, search objects and image details in a gallery, convert video to image frames, and augment images.rectlabel.com · read 9 Oct 2026

Support

The maker directs users to post problems to GitHub issues or email [email protected].rectlabel.com · read 9 Oct 2026

Target users

The maker describes itself as building simple, intuitive tools for developers and says RectLabel is for annotating images for object detection and segmentation.rectlabel.com · read 9 Oct 2026

Alternatives to RectLabel

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