# Gretio vs GateKeyper

The clearest difference is in-app purchases: GateKeyper at none against Gretio's 4. GateKeyper also leads on iOS requirement (12.0 vs 18.0). Gretio's advantage is update cadence (monthly vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Gretio sells 4 in-app purchases, starting at $19.99 per year. GateKeyper asks for nothing beyond the download.

Gretio ships an update monthly, GateKeyper every 7 months. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Gretio | GateKeyper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (23 ratings)](https://appshunter.io/ios/app/gretio/id1498320180/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 68.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 7 months |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 53 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Surreal Development LLC](https://appshunter.io/developer/1498320179) | [GateKeyper Solutions Inc](https://appshunter.io/developer/1542165044) |

## What reviewers say

### Gretio

[App page](https://appshunter.io/ios/app/gretio/id1498320180)

This app allows advanced vehicle diagnostics and service functions for diesel, gas, electric, and hybrid cars. It analyzes thousands of data points, looks up trouble codes across all modules, and performs service regenerations and tests. Designed for DIY users, it requires specific hardware and vehicle compatibility.

**Highlights:** Advanced vehicle diagnostics, Analyze thousands of data points, Diagnostic trouble code lookup, Perform service functions (DPF regen, SCR tests), Program vehicle features, Supports diesel, gas, electric, hybrid vehicles

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gretio All Access | $19.99 | per year |
| Gretio RPO Pack 1 | $34.99 | one-time |
| Gretio RPO Pack 2 | $34.99 | one-time |
| RPO Pack 3 | $34.99 | one-time |


### GateKeyper

[App page](https://appshunter.io/ios/app/gatekeyper/id1542165042)

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

**In-app purchases:** none


## Frequently asked questions

### Is Gretio free?

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

### Is GateKeyper free?

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

### Do Gretio or GateKeyper have ads?

Neither Gretio nor GateKeyper shows ads.

### Which is updated more often, Gretio or GateKeyper?

Gretio ships an update monthly, and GateKeyper every 7 months. Most recently, Gretio was updated on November 3, 2026 and GateKeyper on October 25, 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.*