OpenNotes vs Theory Checklist
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpenNotes
A free, open-source note-taking app designed for handwriting and PDF annotation. Organize notes into folders, import documents, and export your work. It prioritizes privacy with local-first storage and optional iCloud backups.
- Handwriting with Apple Pencil
- PDF import and annotation
- Add images and text
- Folder organization
- Local-first privacy
- Optional iCloud backup
- Export notes
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OpenNotes is a simple, free, open-source notes app built for handwriting, PDFs, and focused organization. Create notebooks, import PDFs, write with Apple Pencil, add images or text, organize notes into folders, and export your work when you need it. OpenNotes is local-first and privacy focused. There are no accounts, no analytics, and no tracking. Your notes live on your device, with optional backup to your own iCloud so they survive a lost iPad or a deleted app. Nothing is ever sent to us — your notes stay in your Apple account, readable by no one else.
Theory Checklist
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Verdict
The clearest difference is device support: OpenNotes at 3 against Theory Checklist's 1. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | OpenNotes | Theory Checklist |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (39 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 39 — better | — |
| Update frequency | Every 5 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 45 MB | 73 MB |
| Age rating | 4+ | 4+ |
| Developer | Mark Miller | Theory Holding SPA |
In-app purchases
OpenNotes
No in-app purchases
Theory Checklist
No in-app purchases
Questions
Is OpenNotes free?
Is Theory Checklist free?
Do OpenNotes or Theory Checklist have ads?
Other comparisons
