# Katmer.im vs Lucent

The clearest difference is device support: Lucent at 3 against Katmer.im's 1. Lucent also leads on iOS requirement (15.1 vs 17.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Katmer.im ships an update every 10 days, Lucent every 5 days. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Katmer.im | Lucent |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 5 days** |
| Size | 10 MB | 37 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Arguman Yapay Zeka Teknolojileri Anonim Sirketi](https://appshunter.io/developer/1832189666) | [Nguyen Trung Kien](https://appshunter.io/developer/1849106734) |

## What reviewers say

### Katmer.im

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Lucent

[App page](https://appshunter.io/ios/app/lucent-pomodoro-focus-timer/id6754592413)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Katmer.im free?

Katmer.im is free to download, with no in-app purchases.

### Is Lucent free?

Lucent is free to download, with no in-app purchases.

### Do Katmer.im or Lucent have ads?

Neither Katmer.im nor Lucent shows ads.

### Which is updated more often, Katmer.im or Lucent?

Katmer.im ships an update every 10 days, and Lucent every 5 days. Most recently, Katmer.im was updated on September 23, 2026 and Lucent on September 18, 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.*