# Katmer.im vs Duewell

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.

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.

## The numbers

| Metric | Katmer.im | Duewell |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/katmerim/id6749801768/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/duewell-expiration-tracker/id6789351334/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 weeks |
| Monetization | Free | Free |
| Size | 10 MB | 12 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Arguman Yapay Zeka Teknolojileri Anonim Sirketi](https://appshunter.io/developer/1832189666) | [Arthur Zheng](https://appshunter.io/developer/6789351337) |

## What reviewers say

### Katmer.im

[App page](https://appshunter.io/ios/app/katmerim/id6749801768)

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:** macOS Compatibility

**In-app purchases:** none


### Duewell

[App page](https://appshunter.io/ios/app/duewell-expiration-tracker/id6789351334)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*