PrincipleX vs Halfmind Todo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PrincipleX
Capture, reflect on, and grow with your personal principles. This app helps you organize your guiding beliefs and build the habit of living by them through daily reminders and journaling.
- Create and organize personal principles
- Manage principles with folders and tags
- Daily principle practice reminders
- Reflective journaling for personal growth
- Pin important principles for daily focus
- iCloud sync across devices
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Saved a great quote, then forgotten it when you needed it? PrincipleX helps you save personal principles, reading highlights and lessons from life. Organize them, revisit them with daily reminders and add your own reflections, so useful ideas become more than a collection. KEEP IDEAS WORTH REMEMBERING Capture a meaningful quote, a lesson from experience or a principle you want to live by. Add details and a source to preserve the context. BUILD YOUR OWN PRINCIPLE LIBRARY Organize ideas with folders and tags. Give thoughts about work, life and reading a place of their own. RETURN TO WHAT MATTERS Set daily reminders to revisit saved principles. You can also keep one principle fixed while you focus on putting it into practice. MAKE ROOM FOR REFLECTION Add your thoughts to each principle: When does it apply? Did you follow it? What could you choose next time? Turn collected ideas into personal understanding. ACCESS PRINCIPLES WITH SIRI On supported systems running iOS 27 or later, allow access to find, read and open saved principles with Siri, or use them in Shortcuts. You decide separately whether to include your reflections. DISCOVER AND SHARE Explore thoughtful ideas and save principles that resonate. Turn a principle into an image to share with friends. With iCloud sync, continue organizing and revisiting your principles across your own devices. Start with one principle you truly want to remember. Siri availability depends on your device, language, region and system settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Halfmind Todo
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Halfmind Todo is designed to help you tackle fragmented tasks. By pairing with Halfmind Reminder, an e-ink reminder device, you can be reminded anywhere in your home. You can import todo list from system Reminder and Todoist.
Screenshots
Verdict
The clearest difference is in-app purchases: Halfmind Todo at none against PrincipleX's 5. Halfmind Todo also leads on iOS requirement (14.0 vs 18.0). On price, update cadence, ads 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. PrincipleX sells 5 in-app purchases, starting at $2.99 per month. Halfmind Todo asks for nothing beyond the download.
PrincipleX ships an update monthly, Halfmind Todo every 5 weeks. The most recent releases landed on September 17, 2026 and June 23, 2026 respectively.
| Parameter | PrincipleX | Halfmind Todo |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Monthly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 18.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 130 MB |
| Age rating | 4+ | 4+ |
| Developer | 旭 夏 | Haflmind Technology (Dongguan) Co,. LTD. |
In-app purchases
PrincipleX
- Monthly Plan$2.991 Month
- Annual Plan$14.991 Year
- A Coffee$1.00
- Signature Color$3.00
- Lifetime Access$9.99
Halfmind Todo
No in-app purchases









