244+ iOS apps curated and reviewed
Finding the right touch annotator apps can be overwhelming with so many options. We've analyzed 244+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | $5.99 | 1.0★ (1) | No | No | May 2026 |
| 2 |  | Free | 2.5★ (4) | Yes | Yes | Aug 2026 |
| 3 |  | Free | 4.7★ (66) | No | Yes | Aug 2026 |
| 4 |  | Free | 4.7★ (143) | No | Yes | Aug 2026 |
| 5 |  | Free | 4.7★ (6.9K) | No | Yes | Aug 2026 |
| 6 |  | $5.99 | 4.7★ (14K) | No | Yes | Aug 2026 |
| 7 |  | Free | 4.5★ (163) | No | Yes | Aug 2026 |
| 8 |  | Free | 4.6★ (6.4K) | No | Yes | Aug 2026 |
This tool simplifies image annotation for object detection tasks. It automatically handles annotation formatting and offers intuitive controls for managing bounding boxes and labels. Choose from multiple export formats to seamlessly integrate with various machine learning frameworks.
Easily scan, read, edit, and manage PDF documents on your iPhone and iPad. Convert images to PDF, extract text with OCR, and sign your documents. Organize files with merging, splitting, and password protection.
This app offers a realistic pen-on-paper handwriting experience on tablets with an infinite canvas for notes and sketches. It includes advanced layering, PDF annotation, and a robust organizer for efficient digital note-taking and planning.
This CAD software allows professionals to view, create, annotate, and modify DWG drawings on mobile devices. Free users can access viewing and basic annotation tools, while subscribers unlock hundreds of advanced creation and editing features.
Edit, annotate, and read PDF documents on your iPhone and iPad. Highlight text, add notes, shapes, voice recordings, and photos. Search your entire PDF library, fill out forms, and sign documents.
This app offers robust PDF editing and viewing capabilities, alongside comprehensive file management tools. It allows users to annotate PDFs, manage files from various cloud services, and secure sensitive data with advanced encryption. Enjoy a superior reading experience with features like PDF Reflow and split-screen viewing.
This app combines powerful note-taking, handwriting, and PDF annotation features. Create rich text notes, sketch with various tools, and mark up documents. Organize, search, and sync your notes across devices.
This app provides a dynamic workspace for reviewing and organizing information from documents and webpages. It allows users to extract key facts, connect ideas across different sources, and annotate content for research, writing, or study.
This app offers a versatile digital canvas for note-taking, PDF annotation, and sketching. It leverages AI to summarize content, generate quizzes, and transcribe audio. Designed for students, professionals, and creators, it provides tools for organization, collaboration, and enhanced productivity.
This app offers robust PDF editing and annotation capabilities, alongside comprehensive file management for various document types. It allows users to securely store, organize, and access files from cloud services, enhancing productivity on mobile devices.
This app provides a local-first PDF workspace for creating, merging, organizing, and protecting documents on your iPhone and iPad. It allows you to scan paper, convert photos to PDFs, recognize text, and manage your files securely.
Save, sync, and annotate web pages and PDFs across devices. Easily share your saved content with highlights and sticky notes. Access your bookmarks anytime, anywhere.
Easily sign, date, and annotate documents directly on your device. Import files, add your signature by drawing or scanning, and insert text or dates. Save time with smart features that locate signature fields and repeat initials across pages.
This app provides a comprehensive suite of tools for annotating and marking up images. It offers a wide range of customization options for common annotation elements and unique features like text highlighting on screenshots. The app supports various iOS system integrations for a seamless user experience.
This app allows users to read, edit, annotate, sign, convert, and fill out PDF documents on their mobile devices. It offers features like text editing, image modification, page management, and OCR capabilities, making it a comprehensive tool for PDF management.
This app is a powerful ebook reader designed for deep thinkers and researchers. It offers advanced annotation tools, seamless device syncing, and robust library management with OPDS and Calibre support. Enjoy a distraction-free reading experience with customizable modes and multi-book viewing for enhanced study and analysis.
This tool allows professionals to add precise markings, measurements, and annotations to images. It supports various drawing tools, units, and layer management for detailed visual documentation and communication.
Easily mark up and share your images to communicate ideas more clearly. Offers a wide range of annotation tools with customizable styles, including smart text highlighting and fun face covering options. Export and share your annotated images conveniently.
Organize, view, and transfer files on your iPhone with this powerful manager. It supports various formats, including archives and documents, and offers wireless transfer capabilities. Enhance your images with annotation tools while keeping your data secure.