Obsidian vs Todo Matrix
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Obsidian
Organize your thoughts and ideas with a powerful knowledge base that utilizes local Markdown files. This app acts as your personal second brain, accessible on your mobile device for seamless note-taking and idea connection.
- Local Markdown file storage
- Customizable toolbar
- Graph view for connections
- Community plugins
- Themes
- iCloud sync
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Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files. It is a second brain, for you, forever. Now available on the go for iOS! Features include: - Customizable toolbar - Pull down quick actions - Graph view - Community plugins - Themes - Sidebar pinning for tablet - iCloud vaults
Todo Matrix
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Organize your Apple Reminders by importance and urgency. Todo Matrix puts your tasks into four clear quadrants so you can choose what to do now, schedule for later, delegate, or set aside. Choose up to three priorities with Today’s Focus. Add notes and due dates, search your reminders, and keep track of completed tasks. Use your iCloud Reminders account to keep supported devices in sync. Add a Lock Screen widget and choose a list, a focused task, or two important quadrants. After editing tasks in Apple Reminders or on another device, open Todo Matrix to refresh its data. iOS controls widget refresh timing. Available in 26 localizations, including English, Traditional and Simplified Chinese, Japanese, Korean, Hindi, Arabic, Portuguese and more. Reminders access is required to display and manage your tasks.
Screenshots
Verdict
The clearest difference is chart position: Obsidian at #123 against Todo Matrix's unranked. Obsidian also leads on iOS requirement (15.6 vs 17.0). Todo Matrix's advantage is update cadence (every 9 days vs every 3 weeks). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Obsidian ships an update every 3 weeks, Todo Matrix every 9 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | Obsidian | Todo Matrix |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2.8K ratings) — better | — |
| Positive reviews | 61.9% of reviews | — |
| Number of ratings | 2.8K — better | — |
| Update frequency | Every 3 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Best chart rank | #123 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 40 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Dynalist Inc. | Chen Chung Lung |
Bugs and requests
Obsidian
Reported bugs
3 issues- Sync issues leading to data loss
- Freezing and crashing on mobile devices
- Editing bugs and text input issues
Requested features
5 requests- Improved sorting and organization options
- WYSIWYG editing on mobile
- Better integration with other cloud storage services
- More intuitive onboarding process for new users
- Native mobile widgets and share sheet integration
Todo Matrix
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Obsidian
No in-app purchases
Todo Matrix
No in-app purchases
