# Settle Book vs CentRail

The clearest difference is in-app purchases: CentRail at none against Settle Book's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Settle Book sells 1 one-off in-app purchase. CentRail asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on June 17, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Settle Book | CentRail |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 44 MB | 69 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Hasan Raza Khan](https://appshunter.io/developer/1848599011) | [Habibullah Yousofi](https://appshunter.io/developer/1879058266) |

## What reviewers say

### Settle Book

[App page](https://appshunter.io/ios/app/settle-book/id6758585541)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SettleBook Lifetime Premium | $9.99 | one-time |


### CentRail

[App page](https://appshunter.io/ios/app/centrail-expense-tracker/id6760421151)

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

**In-app purchases:** none


## Frequently asked questions

### Is Settle Book free?

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

### Is CentRail free?

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

### Do Settle Book or CentRail have ads?

Neither Settle Book nor CentRail shows ads.

### Which is updated more often, Settle Book or CentRail?

Settle Book ships an update weekly, and CentRail weekly. Most recently, Settle Book was updated on June 17, 2026 and CentRail on September 17, 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.*