Set Theory Clock (BerlinClock) vs Word Clock Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Set Theory Clock (BerlinClock)
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.
- 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
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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.
Word Clock Pro
This app displays the current time using words instead of numbers, offering a typographic and minimalist approach to timekeeping. Customize themes, fonts, and precision modes to create a unique visual experience on your home screen, desktop, or wearable device.
- Home Screen Widgets
- Desk, Ambient, and Kiosk Modes
- Customizable Themes and Fonts
- Multi-Language Support
- Apple Watch Companion App
- iCloud Sync
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Turn time into typography with Word Clock Pro—a customizable word clock, home screen widget, desk clock, and ambient display for your Apple devices. Instead of ordinary digits, Word Clock Pro expresses the time in words. Create a minimalist clock that matches your home screen, desk, nightstand, Mac, Apple Watch, or Apple TV. WORD CLOCK WIDGETS Add elegant word clock widgets to your iPhone, iPad, or Mac. Choose from small and large layouts, customize their appearance, and use your own images as widget backgrounds. PROGRESS & COUNTDOWN WIDGETS Visualize more than the current time with dedicated widgets for: • Day progress • Week progress • Month progress • Year progress • Custom countdowns Create countdowns for birthdays, holidays, events, deadlines, and other important dates. DESIGN YOUR OWN CLOCK Build unlimited themes with complete control over: • Background and letter colors • Image backgrounds • Fonts and typography • Inactive-letter opacity • Minute indicator position • Indicator color, opacity, size, and shape • One-minute or classic five-minute precision Start with 15 professionally designed presets or create a completely original look with live previews. DESK & AMBIENT CLOCK Turn your iPhone or iPad into a calm bedside, desk, or kiosk display. Ambient Mode can keep the screen awake, allowing your word clock to remain visible without automatic locking. SIX CLOCK LANGUAGES Display time in: • English • German • Dutch • French • Spanish • Italian ACROSS THE APPLE ECOSYSTEM • iPhone and iPad Home screen widgets, StandBy support, countdowns, progress widgets, and fullscreen clock modes. • Mac A native macOS app, desktop widgets, and a dedicated word clock screensaver. • Apple Watch A glanceable word clock with customizable themes. • Apple TV A large-format ambient word clock designed for viewing across the room. ICLOUD SYNC Keep your custom themes and settings synchronized across supported Apple devices. ONE-TIME PURCHASE Buy Word Clock Pro once and use it across iPhone, iPad, Mac, Apple Watch, and Apple TV. No subscriptions. No in-app purchases.
Screenshots
Verdict
The clearest difference is review sentiment: Word Clock Pro at 50% against Set Theory Clock (BerlinClock)'s 0%. Word Clock Pro also leads on rating (4.0 vs 3.0) and update cadence (every 10 days vs every 129 months). Set Theory Clock (BerlinClock)'s advantage is price (Free vs $3.99). On ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Set Theory Clock (BerlinClock) is free to download; Word Clock Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Word Clock Pro holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 0% of Set Theory Clock (BerlinClock)'s written reviews are positive against 50% of Word Clock Pro's.
Set Theory Clock (BerlinClock) ships an update every 129 months, Word Clock Pro every 10 days. The most recent releases landed on September 9, 2026 and September 13, 2026 respectively.
| Parameter | Set Theory Clock (BerlinClock) | Word Clock Pro |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 3.0 (2 ratings) | 4.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 2 | 2 |
| Update frequency | Every 129 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone | iPhone, iPad, iPod, Mac, Apple TV, Apple Watch — better |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Stefan Neumann | Vasic Stefan |
Customer experience
Set Theory Clock (BerlinClock)
Word Clock Pro
In-app purchases
Set Theory Clock (BerlinClock)
No in-app purchases
Word Clock Pro
No in-app purchases
