Hacker Clock vs Calculator HD (for iPad)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hacker Clock
Transform your device into a unique clock displaying animated hexadecimal code. Watch green hexadecimal values flow across the screen, simulating complex data processing. Ideal for computer enthusiasts, hackers, and fans of futuristic aesthetics.
- Animated hexadecimal code display
- Three color variants (green, red, blue)
- Horizontal and vertical display modes
- 12- and 24-hour format options
- Unique clock for geeks and fans
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Hacker Clock turns your iPhone into a truly unique clock displayed as animated hexadecimal code. The green hexadecimal values constantly move across the screen, making it look as if your phone is processing complex data. This application is perfect for computer geeks, hackers, and matrix fans. If you are using a binary clock, you can throw it away. Once you try this hexadecimal clock, you will never want to use any other. Summary: * A truly unique clock * Animated hexadecimal code * Three color variants: green, red, blue * Horizontal and vertical modes * 12- and 24-hour formats
Calculator HD (for iPad)
This app offers a powerful and intuitive calculator experience optimized for larger screens. It features both basic and scientific modes, with convenient multitasking capabilities like Split Screen support and easy copy-pasting of results.
- Split Screen and Side Over support
- Swipe to delete input errors
- Copy and paste calculation results
- Vertical basic mode
- Horizontal scientific mode
- Optimized for iOS
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Proudly presenting the grand release of "Calculator HD" version 4.0! Support for Split Screen is finally here! In this brand-new version, you can enjoy more convenient operations through Split Screen and Side Over. You can delete accidental input errors by swiping left or right, and you can also copy calculation results or paste calculation data between different apps. There are countless calculator products on the app market, but none achieve such perfection. Optimized for the latest version of iOS, "Calculator HD" brings you a perfect blend of simplicity and ease of use like never before. In the vertical basic mode, you will never accidentally press those large, finger-friendly keys; while the horizontal scientific mode provides you with all the functions you need for your daily calculations—those functions you will actually use, not just decorative embellishments. "Calculator HD" is the perfect replacement for the iPhone calculator, only bigger, clearer, and easier to use. You don't need to spend any time learning how to use it because you are already very familiar with its operation. Happy calculating!
Screenshots
Verdict
The clearest difference is price: Hacker Clock at Free against Calculator HD (for iPad)'s $1.99. Hacker Clock also leads on device support (3 vs 1) and iOS requirement (12.0 vs 14.0). Calculator HD (for iPad)'s advantage is update cadence (fortnightly vs every 15 months) and review sentiment (63% vs 54%). On rating, 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
Hacker Clock is free to download; Calculator HD (for iPad) costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Calculator HD (for iPad) holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 42 and 26 respectively. Written reviews point the same way: 54% of Hacker Clock's written reviews are positive against 63% of Calculator HD (for iPad)'s.
Hacker Clock ships an update every 15 months, Calculator HD (for iPad) fortnightly. The most recent releases landed on October 29, 2026 and October 20, 2026 respectively.
| Parameter | Hacker Clock | Calculator HD (for iPad) |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.5 (42 ratings) | 4.7 (26 ratings) — better |
| Positive reviews | 53.8% of reviews | 63.3% of reviews — better |
| Number of ratings | 42 — better | 26 |
| Update frequency | Every 15 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 12 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Leszek Szary | 帅 刘 |
Customer experience
Hacker Clock
Calculator HD (for iPad)
In-app purchases
Hacker Clock
No in-app purchases
Calculator HD (for iPad)
No in-app purchases
Questions
Is Hacker Clock free?
Is Calculator HD (for iPad) free?
Which has better reviews, Hacker Clock or Calculator HD (for iPad)?
Do Hacker Clock or Calculator HD (for iPad) have ads?
Which is updated more often, Hacker Clock or Calculator HD (for iPad)?
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