# CentRail vs PiggySpy

The clearest difference is in-app purchases: CentRail at none against PiggySpy's 5. CentRail also leads on update cadence (weekly vs fortnightly) and iOS requirement (15.1 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. PiggySpy sells 5 in-app purchases, starting at $2.99 per month. CentRail asks for nothing beyond the download.

CentRail ships an update weekly, PiggySpy fortnightly. The most recent releases landed on October 4, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | CentRail | PiggySpy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Size | 69 MB | 7 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Habibullah Yousofi](https://appshunter.io/developer/1879058266) | [Krzysztof Drapinski](https://appshunter.io/developer/6796291781) |

## What reviewers say

### CentRail

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

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

**In-app purchases:** none


### PiggySpy

[App page](https://appshunter.io/ios/app/piggyspy/id6796291779)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Field Agent | $2.99 | per month |
| Chief Inspector | $19.99 | per year |
| Piggy Fuel | $1.99 | one-time |
| Piggy's Doughnut | $5.99 | one-time |
| Golden Badge | $24.99 | one-time |


## Frequently asked questions

### Is CentRail free?

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

### Is PiggySpy free?

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

### Do CentRail or PiggySpy have ads?

Neither CentRail nor PiggySpy shows ads.

### Which is updated more often, CentRail or PiggySpy?

CentRail ships an update weekly, and PiggySpy fortnightly. Most recently, CentRail was updated on October 4, 2026 and PiggySpy on October 15, 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.*