# RatePort vs MarinersBook

The clearest difference is in-app purchases: MarinersBook at none against RatePort's 4. MarinersBook also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. RatePort sells 4 in-app purchases, starting at $19.99 per month. MarinersBook asks for nothing beyond the download.

RatePort ships an update weekly, MarinersBook every 10 days. The most recent releases landed on October 21, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | RatePort | MarinersBook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Size | 76 MB | 41 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Blue Spectrum, LLC](https://appshunter.io/developer/6776646254) | [Oguzcan Kocaman](https://appshunter.io/developer/6795064987) |

## What reviewers say

### RatePort

[App page](https://appshunter.io/ios/app/rateport/id6776646252)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Monthly | $19.99 | per month |
| Starter Annual | $199.99 | per year |
| Single Quote | $4.99 | one-time |
| 15 Credits | $14.99 | one-time |


### MarinersBook

[App page](https://appshunter.io/ios/app/marinersbook/id6795064984)

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

**In-app purchases:** none


## Frequently asked questions

### Is RatePort free?

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

### Is MarinersBook free?

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

### Do RatePort or MarinersBook have ads?

Neither RatePort nor MarinersBook shows ads.

### Which is updated more often, RatePort or MarinersBook?

RatePort ships an update weekly, and MarinersBook every 10 days. Most recently, RatePort was updated on October 21, 2026 and MarinersBook on October 19, 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.*