# Set Theory Clock (BerlinClock) vs productionTimer

The clearest difference is review sentiment: productionTimer at 90% against Set Theory Clock (BerlinClock)'s 17%. productionTimer also leads on rating (4.7 vs 3.0) and update cadence (weekly vs every 129 months). Set Theory Clock (BerlinClock)'s advantage is price (Free vs $19.99). On ads and in-app purchases there is nothing between them.

Set Theory Clock (BerlinClock) is free to download; productionTimer costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

productionTimer holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: productionTimer has 12 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 17% of Set Theory Clock (BerlinClock)'s written reviews are positive against 90% of productionTimer's.

Set Theory Clock (BerlinClock) ships an update every 129 months, productionTimer weekly. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Set Theory Clock (BerlinClock) | productionTimer |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/set-theory-clock-berlinclock/id972665637/reviews) | **[4.7 (12 ratings)](https://appshunter.io/ios/app/productiontimer/id1018545711/reviews)** |
| Number of ratings | 2 | **12** |
| Positive reviews | 16.7% of reviews | **90.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 129 months | **Weekly** |
| Monetization | **Free** | Paid |
| Size | 2 MB | 6 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Neumann](https://appshunter.io/developer/972665636) | [On-Point Presentation Services, LLC](https://appshunter.io/developer/1018545710) |

## 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

**In-app purchases:** none


### productionTimer

[App page](https://appshunter.io/ios/app/productiontimer/id1018545711)

This app transforms your iOS device into a professional countdown clock for live events and television production. It offers fullscreen display on external monitors, customizable text and colors, and message broadcasting capabilities.

**Highlights:** Fullscreen countdown on external display, Message broadcasting, Customizable text and background colors, Time-Travel feature, AirPlay support

**Features:** macOS Compatibility, Vision Pro 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 productionTimer free?

productionTimer costs $19.99, with no in-app purchases.

### Which has better reviews, Set Theory Clock (BerlinClock) or productionTimer?

productionTimer is rated higher. Set Theory Clock (BerlinClock) averages 3.0 out of 5 from 2 ratings, while productionTimer averages 4.7 from 12 ratings.

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

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

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

Set Theory Clock (BerlinClock) ships an update every 129 months, and productionTimer weekly. Most recently, Set Theory Clock (BerlinClock) was updated on October 3, 2026 and productionTimer on October 8, 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.*