Prepare ML vs Apollon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prepare ML
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Prepare ML will help you to prepare training data for Xcode's Create ML Object Detection models.
Apollon
Create UML and software design diagrams on your iPhone and iPad. Supports 13 notations, templates, and offline work. Export to various formats or share for collaboration.
- 13 diagram notations
- Templates and blank canvas
- Touch-friendly interface
- Offline diagram creation
- Export to SVG, PNG, PDF, PPTX, JSON
- Share for collaboration
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Create UML and software-design diagrams with Apollon, the open-source editor for the web—now ready for iPhone and iPad. Apollon helps students, educators, software engineers, and architects turn ideas into clear, structured models. Start without an account, keep local diagrams on your device, and work offline. When you are ready, export your diagram or share it for feedback and live collaboration. What you can do: • Choose from 13 notations: Class, Object, Activity, Use Case, Communication, Component, Deployment, Petri Net, Reachability Graph, Syntax Tree, Flowchart, BPMN, and SFC. • Start with a blank canvas or a software-design pattern template. • Edit with a touch-friendly interface designed for iPhone and iPad. • Export to SVG, PNG, PDF, PPTX, or JSON. • Use light or dark appearance in portrait or landscape. • Create an optional share link; diagrams you keep local remain local. Apollon uses the same open diagram format across the web app, iPhone and iPad, VS Code, and embedded products. The project is open source and developed by TUM Applied Education Technologies.
Screenshots
Verdict
The clearest difference is in-app purchases: Apollon at none against Prepare ML's 2. On price, ads, device support and iOS requirement 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
Both are free to download. Prepare ML sells 2 in-app purchases, starting at $1.49 per month. Apollon asks for nothing beyond the download.
| Parameter | Prepare ML | Apollon |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (2 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | — | Every 15 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPad, Mac | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 19 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Ilia Ambrazhevich | TUM Applied Education Technologies |
In-app purchases
Prepare ML
- Monthly Subscription$1.491 Month
- Pay Once$2.99
Apollon
No in-app purchases
