ML Trainer vs ML Annotator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ML Trainer
Easily create training data for machine learning image classification models. Capture thousands of images with adjustable settings for speed and accuracy, then export them for use with popular development tools.
- Capture images for ML training data
- Adjustable scan speed and frame count
- Low light enhancement with flashlight
- Export images to Photos app
- Compatibility with CreateML, TensorFlow, Azure ML
- Accuracy aids like crosshairs and guides
Read full descriptionHide full description
Creating original training data for Image Classification machine learning models just got a little easier! ML Trainer allows developers to quickly capture and export thousands of images to the Photos app, allowing every image to be imported with iCloud or the built in Image Capture app on Mac. Press the Scan button to capture a preset amount of images as you move closer to or pivot around your subject, or Tap the Camera button to capture a single picture. Toggle the Flashlight to improve results in low light conditions, and tap the Save button to export any captured images to the Photos app. While each image is always captured at a speed of 3 Frames Per Second, you can adjust the Frame Count of each Scan in the Settings Menu. A larger Frame Count will save you time, while a lower Frame Count will help improve accuracy across different angles. Enabling Crosshairs and Guides in the Settings Menu can also help improve accuracy. This app was specifically designed to speed up the process of importing data into the Xcode Developer Tool named CreateML. Exported images should also be compatible with other platforms like TensorFlow and Azure Machine Learning. A wired connection to a macOS device with the Image Capture app open will always be the fastest way to import your data to desktop.
ML Annotator
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.
- 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
Read full descriptionHide full description
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
Screenshots
Verdict
The clearest difference is price: ML Annotator at Free against ML Trainer's $0.99. ML Annotator also leads on update cadence (every 3 days vs every 55 months). ML Trainer's advantage is rating (5.0 vs 3.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
ML Annotator is free to download; ML Trainer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ML Trainer holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively.
ML Trainer ships an update every 55 months, ML Annotator every 3 days. The most recent releases landed on September 21, 2026 and September 7, 2026 respectively.
| Parameter | ML Trainer | ML Annotator |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (2 ratings) — better | 3.0 (4 ratings) |
| Positive reviews | — | 60.0% of reviews |
| Number of ratings | 2 | 4 — better |
| Update frequency | Every 55 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 9 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Casey Pollock | Dito Technologies LLC |
Customer experience
ML Trainer
ML Annotator
In-app purchases
ML Trainer
No in-app purchases
ML Annotator
No in-app purchases
Questions
Is ML Trainer free?
Is ML Annotator free?
Which has better reviews, ML Trainer or ML Annotator?
Do ML Trainer or ML Annotator have ads?
Which is updated more often, ML Trainer or ML Annotator?
Other comparisons
