# ML Trainer vs ML Annotator

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.

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.

## The numbers

| Metric | ML Trainer | ML Annotator |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ml-trainer-make-training-data/id1573622903/reviews)** | [3.0 (4 ratings)](https://appshunter.io/ios/app/ml-annotator/id1594943438/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 55 months | **Every 3 days** |
| Monetization | Paid | **Free** |
| Size | 9 MB | 8 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Casey Pollock](https://appshunter.io/developer/991679552) | [Dito Technologies LLC](https://appshunter.io/developer/1076141818) |

## What reviewers say

### ML Trainer

[App page](https://appshunter.io/ios/app/ml-trainer-make-training-data/id1573622903)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases:** none


### ML Annotator

[App page](https://appshunter.io/ios/app/ml-annotator/id1594943438)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ML Trainer free?

ML Trainer costs $0.99, with no in-app purchases.

### Is ML Annotator free?

ML Annotator is free to download, with no in-app purchases.

### Which has better reviews, ML Trainer or ML Annotator?

ML Trainer is rated higher. ML Trainer averages 5.0 out of 5 from 2 ratings, while ML Annotator averages 3.0 from 4 ratings.

### Do ML Trainer or ML Annotator have ads?

Neither ML Trainer nor ML Annotator shows ads.

### Which is updated more often, ML Trainer or ML Annotator?

ML Trainer ships an update every 55 months, and ML Annotator every 3 days. Most recently, ML Trainer was updated on September 21, 2026 and ML Annotator on September 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*