# Hacker Clock vs Caline

The clearest difference is review sentiment: Caline at 100% against Hacker Clock's 54%. Caline also leads on rating (5.0 vs 4.5) and update cadence (every 2 weeks vs every 15 months). Hacker Clock's advantage is ratings volume (41 vs 2) and iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Hacker Clock costs $1.99 and Caline $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Caline holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Hacker Clock has 41 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 54% of Hacker Clock's written reviews are positive against 100% of Caline's.

Hacker Clock ships an update every 15 months, Caline every 2 weeks. The most recent releases landed on September 25, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Hacker Clock | Caline |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | [4.5 (41 ratings)](https://appshunter.io/ios/app/hacker-clock-green-matrix/id659883519/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/caline/id6443817507/reviews)** |
| Number of ratings | **41** | 2 |
| Positive reviews | 54.2% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 2 weeks** |
| Monetization | Paid | Paid |
| Size | 12 MB | 2 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Leszek Szary](https://appshunter.io/developer/464282200) | [Yuuichi Kuze](https://appshunter.io/developer/1649578927) |

## What reviewers say

### Hacker Clock

[App page](https://appshunter.io/ios/app/hacker-clock-green-matrix/id659883519)

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.

**Highlights:** 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

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

**In-app purchases:** none


### Caline

[App page](https://appshunter.io/ios/app/caline/id6443817507)

This calculator app allows users to save and refer to past calculation memos. It supports a wide range of functions, including trigonometric and logarithmic operations, and displays units like k, M, p, and % for better readability. It can also express values in decibels and hexadecimal format.

**Highlights:** Save and recall calculation memos, Trigonometric and logarithmic functions, Variable support, Unit display (k, M, p, %), Decibel expression, Hexadecimal conversion

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hacker Clock free?

Hacker Clock costs $1.99, with no in-app purchases.

### Is Caline free?

Caline costs $1.99, with no in-app purchases.

### Which has better reviews, Hacker Clock or Caline?

Caline is rated higher. Hacker Clock averages 4.5 out of 5 from 41 ratings, while Caline averages 5.0 from 2 ratings.

### Do Hacker Clock or Caline have ads?

Neither Hacker Clock nor Caline shows ads.

### Which is updated more often, Hacker Clock or Caline?

Hacker Clock ships an update every 15 months, and Caline every 2 weeks. Most recently, Hacker Clock was updated on September 25, 2026 and Caline on September 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.*