# Phase Timer Pro vs HullBook

The clearest difference is price: HullBook at Free against Phase Timer Pro's $4.99. HullBook also leads on update cadence (every 3 weeks vs every 19 months). Phase Timer Pro's advantage is iOS requirement (15.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

HullBook is free to download; Phase Timer Pro costs $4.99 up front. Phase Timer Pro sells 1 in-app purchase, starting at $9.99 per year and HullBook sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Phase Timer Pro ships an update every 19 months, HullBook every 3 weeks. The most recent releases landed on October 7, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Phase Timer Pro | HullBook |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 3 weeks** |
| Size | 2 MB | 6 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Freestyle Photo & Imaging](https://appshunter.io/developer/1786429988) | [InnovaLabWorks](https://appshunter.io/developer/1888514726) |

## What reviewers say

### Phase Timer Pro

[App page](https://appshunter.io/ios/app/phase-timer-pro/id6443657713)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Phase Timer Pro | $9.99 | per year |


### HullBook

[App page](https://appshunter.io/ios/app/hullbook-boat-maintenance-log/id6789323006)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HullBook Lifetime | $17.99 | one-time |


## Frequently asked questions

### Is Phase Timer Pro free?

Phase Timer Pro costs $4.99, and also offers in-app purchases.

### Is HullBook free?

HullBook is free to download, with in-app purchases available.

### Do Phase Timer Pro or HullBook have ads?

Neither Phase Timer Pro nor HullBook shows ads.

### Which is updated more often, Phase Timer Pro or HullBook?

Phase Timer Pro ships an update every 19 months, and HullBook every 3 weeks. Most recently, Phase Timer Pro was updated on October 7, 2026 and HullBook on September 30, 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.*