# Set Theory Clock (BerlinClock) vs LClock

The clearest difference is update cadence: LClock at fortnightly against Set Theory Clock (BerlinClock)'s every 129 months. Set Theory Clock (BerlinClock)'s advantage is iOS requirement (17.6 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Set Theory Clock (BerlinClock) ships an update every 129 months, LClock fortnightly. The most recent releases landed on November 13, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Set Theory Clock (BerlinClock) | LClock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/set-theory-clock-berlinclock/id972665637/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 129 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 2 MB | 2 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Neumann](https://appshunter.io/developer/972665636) | [KYUNGDOE LEE](https://appshunter.io/developer/1835824838) |

## What reviewers say

### Set Theory Clock (BerlinClock)

[App page](https://appshunter.io/ios/app/set-theory-clock-berlinclock/id972665637)

This app displays time using the unique Berlin Clock system, featuring 24 lamps arranged in four rows to represent hours and minutes. It offers a visually distinct way to tell time, with lamps lighting up sequentially to indicate the passing of time.

**Highlights:** 24-lamp display, Hour representation (5-hour and 1-hour lamps), Minute representation (5-minute and 1-minute lamps), Sequential lamp lighting, Unique time visualization

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### LClock

[App page](https://appshunter.io/ios/app/lclock/id6754675678)

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Set Theory Clock (BerlinClock) free?

Set Theory Clock (BerlinClock) is free to download, with no in-app purchases.

### Is LClock free?

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

### Do Set Theory Clock (BerlinClock) or LClock have ads?

Neither Set Theory Clock (BerlinClock) nor LClock shows ads.

### Which is updated more often, Set Theory Clock (BerlinClock) or LClock?

Set Theory Clock (BerlinClock) ships an update every 129 months, and LClock fortnightly. Most recently, Set Theory Clock (BerlinClock) was updated on November 13, 2026 and LClock on November 12, 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.*