Comparison

Katmer.im vs Duewell

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

Katmer.im4 screens
Duewell4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard1 real difference · 9 level
Katmer.im versus Duewell: the parameters behind the verdict, then further details
ParameterKatmer.imDuewell
PriceFreeFree
Rating5.0 (1 ratings)5.0 (4 ratings)
Positive reviews—100.0% of reviews
Number of ratings14 — better
Update frequencyEvery 10 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone
Requires iOS17.617.0 — better
Further details — not scored
Size10 MB12 MB
Age rating4+4+
DeveloperArguman Yapay Zeka Teknolojileri Anonim SirketiArthur Zheng

In-app purchases

None

Katmer.im

No in-app purchases

None

Duewell

No in-app purchases

Questions

Is Katmer.im free?
Katmer.im is free to download, with no in-app purchases.
Is Duewell free?
Duewell is free to download, with no in-app purchases.
Which has better reviews, Katmer.im or Duewell?
Katmer.im and Duewell are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.
Do Katmer.im or Duewell have ads?
Neither Katmer.im nor Duewell shows ads.
Which is updated more often, Katmer.im or Duewell?
Katmer.im ships an update every 10 days, and Duewell every 2 weeks. Most recently, Katmer.im was updated on October 30, 2026 and Duewell on October 31, 2026.

Other comparisons