# HourHack vs Stamp Bookkeeping

The clearest difference is update cadence: Stamp Bookkeeping at every 5 days against HourHack's fortnightly. HourHack's advantage is iOS requirement (13.4 vs 15.0). 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.

HourHack ships an update fortnightly, Stamp Bookkeeping every 5 days. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | HourHack | Stamp Bookkeeping |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/hourhack/id6503925079/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Free | — |
| Size | 21 MB | 28 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rosenbergs LLC](https://appshunter.io/developer/1716179267) | [CELLBORN LIMITED LIABILITY COMPANY](https://appshunter.io/developer/1791037056) |

## What reviewers say

### HourHack

[App page](https://appshunter.io/ios/app/hourhack/id6503925079)

Easily calculate the duration between two specific times or dates. Get instant results in hours, minutes, or days with a clear and intuitive interface. Simplify all your time-related calculations.

**Highlights:** Calculate time differences, Calculate date differences, Instant results, Clear interface, Time unit conversion

**Features:** macOS Compatibility

**In-app purchases:** none


### Stamp Bookkeeping

[App page](https://appshunter.io/ios/app/stamp-bookkeeping/id6740690214)

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

**In-app purchases:** none


## Frequently asked questions

### Is HourHack free?

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

### Is Stamp Bookkeeping free?

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

### Do HourHack or Stamp Bookkeeping have ads?

Neither HourHack nor Stamp Bookkeeping shows ads.

### Which is updated more often, HourHack or Stamp Bookkeeping?

HourHack ships an update fortnightly, and Stamp Bookkeeping every 5 days. Most recently, HourHack was updated on October 13, 2026 and Stamp Bookkeeping on October 2, 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.*