# TrueOrigin vs Gasoline

The clearest difference is device support: TrueOrigin at 3 against Gasoline's —. Gasoline's advantage is iOS requirement (11.0 vs 13.0). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | TrueOrigin | Gasoline |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Monthly | — |
| Monetization | Free | — |
| Size | 37 MB | 24 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Onyx Viet Nam](https://appshunter.io/developer/1621007684) | [Nguyen Nghiem](https://appshunter.io/developer/1745821707) |

## What reviewers say

### TrueOrigin

[App page](https://appshunter.io/ios/app/trueorigin/id1576464807)

This app provides a dynamic digital signature solution to authenticate and prevent counterfeiting of stamps. It offers a novel approach to verifying authenticity directly from the source.

**Highlights:** Dynamic digital signatures, Stamp authentication, Counterfeit prevention, Root-level verification

**Features:** macOS Compatibility

**In-app purchases:** none


### Gasoline

[App page](https://appshunter.io/ios/app/gasoline/id6466231636)

**In-app purchases:** none


## Frequently asked questions

### Is TrueOrigin free?

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

### Is Gasoline free?

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

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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.*