Best Annotator Apps

Video Annotation

Annotate and Mark Up Videos

Free

Draw directly on videos with Apple Pencil or your finger, creating annotations that appear at specific moments. Organize and export your marked-up videos with timeline-based editing and flexible sharing options.

Snap Markup - Annotation Tool

Annotate Photos, Images & Pics

$1.99

Easily edit and annotate photos, images, and pictures with a wide array of tools. Add text, shapes, stickers, blur sensitive areas, and magnify details. Save in high quality and share your creations quickly.

noter: EPUB reader & annotator

Read, markup & highlight books

Free

This app allows users to read EPUB and PDF files, offering extensive annotation features with Apple Pencil support. Users can highlight, draw, and add margin notes, then export their annotations. It also supports Calibre integration and customizable reading themes.

ezPDF Reader: PDF Reader, Annotator & Form Filler

by Unidocs Inc.

$1.99

This app allows users to view and interact with PDF documents, including multimedia playback and form filling. It offers robust annotation tools compatible with Adobe Acrobat and supports text reflow for comfortable reading on mobile devices.

Smell Annotator

Smell Annotator

Free

This application enables machines to digitally sense and analyze smells using nanomaterial-based technology. It allows users to view, annotate, and recognize smell measurements in real-time, functioning as part of a developer kit.

PDF Expert: Editor & Converter

Edit, Read, Scan・Sign Document

Free

This app allows you to edit, annotate, fill out forms, and convert PDF documents. It offers AI-powered summarization and analysis, along with tools to merge, sign, and protect your files. Work seamlessly across Apple devices with a user-friendly interface.

Annotate: Screenshot Markup

Blur, Arrows, Crop & Draw Fast

Free

Quickly enhance screenshots and images with a variety of tools for adding text, shapes, and effects. Features include auto-redaction for sensitive information and animated GIF support. Create polished visuals with layers, templates, and custom styles.

ML Annotator

Annotate, Train and Use Models

Free

This tool facilitates the annotation of images for machine learning tasks like object detection and classification. It supports team collaboration, Apple Pencil for precise drawing, and offers various data export formats. Users can also generate custom iPython notebooks to kickstart model creation.

Annot8: Annotation & Markup

Best Annotation & Markup Tool

Free

Easily add customizable text, shapes, and drawings to your photos. Highlight important areas, blur backgrounds, and edit images with tools like cropping and rotation. Share your annotated creations instantly across multiple platforms.

Annotium - Photo Annotation

Draw shapes and note on photo

Free

Easily add notes, shapes, and highlights to your photos for technical fields. Illustrate, track, and share your work visually with a variety of annotation tools. Ideal for students, professionals, and anyone needing to explain visual information.