FastLabel

FastLabel is the fastest way to label image datasets on your iPhone.

Import a ZIP with images, define your labels, and start labeling instantly. Designed for speed and simplicity, FastLabel lets you go through large datasets quickly with a smooth, one-by-one workflow.

Features:
• Import images from ZIP files (JPG, PNG, JPEG)
• Fast, focused labeling experience
• Simple label set creation
• Overview of all images in a grid
• Continue where you left off
• Export labels as JSON, CSV, or JSONL
• Optionally export images together with labels

Perfect for:
• Machine learning datasets
• Computer vision projects
• AI training data preparation
• Quick annotation tasks on the go

All data stays on your device. No accounts, no uploads, no tracking.