# Set Theory Clock (BerlinClock) — Iconic Berlin Clock

> A digital representation of the iconic Berlin Clock for timekeeping. (iPhone/iPad app by Stefan Neumann.)

- Source: https://appshunter.io/ios/app/set-theory-clock-berlinclock/id972665637 (this page in markdown: same URL + `.md`)
- Developer: [Stefan Neumann](https://appshunter.io/developer/972665636)
- Category: Utilities, Lifestyle
- Price: Free
- Rating: 3.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 2 MB
- Languages: American English, German (Germany)
- Released: 2015-07-25
- Data updated: 2026-07-06
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/set-theory-clock-berlinclock/id972665637/reviews.md

## What is Set Theory Clock (BerlinClock)?

The Berlin Clock consists of 24 lamps arranged in 4 rows. 

The top two rows (red) represent the hours, and the bottom two rows (yellow) represent the minutes. Additionally, a circular yellow lamp at the top flashes every 2 seconds.

In the top rows of each color, each lamp represents 5 hours or 5 minutes, respectively, while in the bottom rows, each represents 1 hour or 1 minute. The lamps light up from left to right and from bottom to top. Once a row is full, all lamps turn off and another lamp lights up in the row above it.

## Key features

- 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

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/set-theory-clock-berlinclock/id972665637/reviews.md

### 3/5 — Dauerfunktion fehlt.

*2016-04-09*

Die Uhr bringt etwas aus Deutschland zu mir, der da in Kanada lebt. Ich habe aber nur drei Sterbe angekreuzt, da dieses Programm nicht auf Dauerbetrieb ohne Abschaltung des Bildschirmes umgestellt werden kann, wie das bei vielen anderen Uhren auf Smartphone 6 geht. Aber vielleicht wird sich da was tun, und sei es zu einem Pres.

## Frequently asked questions about Set Theory Clock (BerlinClock)

### How does the Set Theory Clock display time?

The Set Theory Clock uses 24 lamps arranged in four rows to represent hours and minutes. The top two rows indicate hours, and the bottom two indicate minutes, with lamps lighting up sequentially to show the time.

### What devices does the Set Theory Clock support?

The Set Theory Clock is currently supported on iPhone devices.

### Is the Set Theory Clock free to use?

Yes, the Set Theory Clock is available for free, with no in-app purchases or advertisements.

### What is the age rating for the Set Theory Clock?

The Set Theory Clock has an age rating of 4+, making it suitable for a wide range of users.

### When was the Set Theory Clock last updated?

The Set Theory Clock was last updated on February 18, 2026, with version 1.3.

### What is the user sentiment for the Set Theory Clock based on ratings?

The Set Theory Clock has a rating of 3.0 stars from 2 ratings, indicating a mixed user reception.

### Does the Set Theory Clock have ads?

No, the Set Theory Clock is ad-free and does not contain any advertisements.

### What is the primary function of the Set Theory Clock?

The primary function of the Set Theory Clock is to provide a unique visual representation of time based on the Berlin Clock system.

## Version history (last 2 releases)

### 1.3 — 2026-02-18

- Almost rewritten to fit all Display sizes. 
- Keep screen awake via Setting possible

### 1.1 — 2015-07-25

Diese App wurde von Apple aktualisiert, um das Symbol der Apple Watch-App anzuzeigen.

## More apps by Stefan Neumann

- [BakeForm Converter](https://appshunter.io/ios/app/bakeform-converter/id6753914009)
- [KnittingConverter](https://appshunter.io/ios/app/knittingconverter/id6754216944)
- [Verseifungsrechner](https://appshunter.io/ios/app/verseifungsrechner/id6754397088)
- [Sock Pattern Architect](https://appshunter.io/ios/app/sock-pattern-architect/id6758571729)

All apps by Stefan Neumann: https://appshunter.io/developer/972665636

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-06.*