# Probability vs Unix TimeStamp

The clearest difference is update cadence: Unix TimeStamp at every 6 weeks against Probability's every 18 months. Probability's advantage is iOS requirement (9.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Probability ships an update every 18 months, Unix TimeStamp every 6 weeks. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Probability | Unix TimeStamp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/unix-timestamp/id6737517840/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 6 weeks** |
| Monetization | — | Ad-supported |
| Size | 1 MB | 4 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [domesticusdevelop](https://appshunter.io/developer/373834594) | [灿耿 陈](https://appshunter.io/developer/1688324562) |

## What reviewers say

### Probability

[App page](https://appshunter.io/ios/app/probability-dd/id1451460705)

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

**In-app purchases:** none


### Unix TimeStamp

[App page](https://appshunter.io/ios/app/unix-timestamp/id6737517840)

This tool simplifies working with Unix timestamps, offering one-click display and copying. It supports switching between second and millisecond precision, bidirectional conversion to human-readable dates, and multi-time zone conversions.

**Highlights:** One-click timestamp display, One-click copy to clipboard, Second and millisecond precision toggle, Bidirectional timestamp to date conversion, Multi-time zone conversion, Manual data copying

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Probability free?

Probability is free to download, with no in-app purchases.

### Is Unix TimeStamp free?

Unix TimeStamp is free to download, with no in-app purchases.

### Do Probability or Unix TimeStamp have ads?

Neither Probability nor Unix TimeStamp shows ads.

### Which is updated more often, Probability or Unix TimeStamp?

Probability ships an update every 18 months, and Unix TimeStamp every 6 weeks. Most recently, Probability was updated on October 6, 2026 and Unix TimeStamp 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.*