Katmer.im vs Duewell
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Katmer.im
Organize academic and daily tasks with smart calendar views and secure, encrypted notes. Enhance focus with a built-in Pomodoro timer and access tasks instantly via a home screen widget. Optimized for mobile academic workflows.
- Task management with calendar views
- End-to-end encrypted note-taking
- Integrated Pomodoro timer
- Cloud sync with web account
- Home screen widget for quick access
- Optimized for academic workflows
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Task Management - Organize your academic and daily tasks with smart calendar views Encrypted Notes - Secure note-taking with end-to-end encryption for privacy Pomodoro Timer - Focus on your work with structured productivity sessions Cloud Sync - Seamlessly sync with your katmer.im web account Home Screen Widget - Quick access to today's tasks right from your home screen Katmer.im - iOS 26 Ready: Advanced Pomodoro & Habit Tracking DESIGNED FOR ACADEMICS: This mobile app includes core productivity features from the full katmer.im platform, specifically optimized for mobile workflows and academic productivity. PRIVACY AND SECURITY: Your notes and tasks are encrypted before leaving your device. Your academic data stays completely private and secure with industry-standard encryption. For the complete katmer.im experience with additional academic research tools, visit katmer.im on the web.
Duewell
This app helps you track important deadlines for items like passports, licenses, and subscriptions. It provides customizable reminders and a calendar view to keep you informed about what's expiring soon or overdue. Your data is stored locally on your device for privacy.
- Track any item with a deadline
- Organize items into categories
- Customizable reminder frequency
- Calendar view of expirations
- Light and dark mode themes
- Local data storage, no account needed
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Track passports, licenses, warranties, bills, and subscriptions in one calm place — with reminders that won't give up until it's done. 100% Private & Offline: No accounts, no ads, no trackers. Your personal data never leaves your device (optional private iCloud sync available). KEY FEATURES: • Flexible Smart Alerts: Set custom nudge intervals (daily, every 2 days, etc.) that continue even after a deadline passes so nothing slips away. • Visual Color Coded Status: Know immediately what's Overdue, Due Soon, or All Good at a single glance. • Full Monthly Calendar: View all upcoming expirations on an intuitive monthly timeline. • Document & Details Storage: Attach notes, policy numbers, and expiration dates cleanly organized by category. • Customizable Themes: Light and dark modes across Classic and High-Contrast palettes. • Privacy by Design: Zero sign-up required. Your records belong strictly to you. Available in English, Spanish, Japanese, Simplified Chinese, and Traditional Chinese.
Screenshots
Verdict
The clearest difference is ratings volume: Duewell at 4 against Katmer.im's 1. On price, rating, update cadence and ads 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.
On the App Store both sit at effectively the same score — 5.0 for Katmer.im against 5.0 for Duewell. Both are backed by a comparable volume of ratings — 1 and 4 respectively.
Katmer.im ships an update every 10 days, Duewell every 2 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Katmer.im | Duewell |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (4 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 10 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Arguman Yapay Zeka Teknolojileri Anonim Sirketi | Arthur Zheng |
In-app purchases
Katmer.im
No in-app purchases
Duewell
No in-app purchases









