# ML Annotator — Annotate, Train and Use Models

> Image annotation tool for machine learning training data. (iPhone/iPad app by Dito Technologies LLC.)

- Source: https://appshunter.io/ios/app/ml-annotator/id1594943438 (this page in markdown: same URL + `.md`)
- Developer: [Dito Technologies LLC](https://appshunter.io/developer/1076141818)
- Category: Developer Tools, Utilities
- Price: Free
- Rating: 3.67/5 from 3 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 8 MB
- Languages: English
- Released: 2022-01-21
- Data updated: 2026-07-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/ml-annotator/id1594943438/reviews.md

## What is ML Annotator?

ML Annotator allows you to annotate images for use in image segmentation, object detection, video classification and image classification machine learning classifiers. We have many features that make ML Annotator the best way to supercharge your machine learning workflow.

- Invite others to your organization so you can annotate the images as a team
- Full Apple Pencil support to make annotating super fast if you have an iPad
- Download training data in various formats so that you can plug them into your machine learning workflow
- Download a custom generate iPython Notebook to provide you with a starting point of how to create a model from your training data
- Get suggestions from the app about things that might improve your trainging data

## Key features

- Image annotation for ML classifiers
- Team collaboration for annotation
- Apple Pencil support for iPad
- Export training data in multiple formats
- Generate custom iPython notebooks
- Training data improvement suggestions

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/ml-annotator/id1594943438/reviews.md

### 2/5 — Not user friendly and lacks in App instructions etc

*2025-02-14, version 1.4.2*

Doesn’t seem to be easy to set up and no clear instructions.  The only instructions I could find refers to the MacOS operating system no iOS

### 1/5 — Doesn't work

*2023-10-23*

When click on download it generates Access Denied.

### 5/5 — Liked the concept

*2023-04-04, version 1.4.2*

Just tried it out. Is there any limit on data size ?
Ready to pay for more features

### 5/5 — Easy to use!

*2022-02-05*

In technology challenged and the app is simple to use and works great! Mostly use on iPad

### 5/5 — Easiest annotator I've used

*2022-01-28*

ML Annotator is super easy. All I have to do is annotate and ML annotator takes care of everything else. Love that I can export to a bunch of different formats and that there is code generate for training the models.

## Frequently asked questions about ML Annotator

### What types of machine learning tasks can ML Annotator be used for?

ML Annotator is designed for image segmentation, object detection, video classification, and image classification machine learning classifiers. It helps prepare your visual data for these AI tasks.

### Can I collaborate with others using ML Annotator?

Yes, you can invite others to your organization within ML Annotator to annotate images as a team. This feature is beneficial for larger projects requiring shared annotation efforts.

### Does ML Annotator support Apple Pencil?

ML Annotator offers full Apple Pencil support, making the annotation process particularly fast and precise for users with an iPad. This enhances the user experience for detailed drawing.

### What formats can I export my training data in?

You can download your training data in various formats, allowing you to easily integrate it into your existing machine learning workflow. This flexibility ensures compatibility with different ML frameworks.

### Does ML Annotator offer any guidance for creating models?

Yes, ML Annotator can download a custom-generated iPython Notebook. This notebook provides a starting point for creating a machine learning model from your annotated training data.

### Does ML Annotator have ads?

ML Annotator is ad-free, meaning you can use its features without any interruptions from advertisements. This provides a clean and focused user experience.

### What is the age rating for ML Annotator?

ML Annotator has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger individuals, though its primary audience is developers.

### How often is ML Annotator updated?

The latest version of ML Annotator is 1.4.2, last updated on June 26, 2022. While specific update frequency isn't detailed, this indicates recent development activity.

## Version history (last 5 releases)

### 1.4.2 — 2022-06-26

Bug fixes.

### 1.4.1 — 2022-06-24

Support for new transformation types.

### 1.4.0 — 2022-05-29

Easier to understand interface

### 1.3.0 — 2022-02-16

Easier to use object detection functionality

### 1.2.3 — 2022-02-15

Performance improvements and a new "tools" feature

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All apps by Dito Technologies LLC: https://appshunter.io/developer/1076141818

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-01.*