# Oil4Green vs QR

The clearest difference is in-app purchases: Oil4Green at none against QR's 2. Oil4Green also leads on ads (none vs shown) and iOS requirement (11.0 vs 18.6). QR's advantage is update cadence (daily vs every 17 months). On price and device support there is nothing between them.

Both are free to download. QR sells 2 in-app purchases, starting at $0.99 per month. Oil4Green asks for nothing beyond the download.

Oil4Green ships an update every 17 months, QR daily. The most recent releases landed on September 16, 2026 and August 29, 2026 respectively.

## The numbers

| Metric | Oil4Green | QR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 17 months | **Daily** |
| Size | 18 MB | 51 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DATA MONITORING S.L.](https://appshunter.io/developer/1361669407) | [Entertainment Apps MCHJ](https://appshunter.io/developer/1032971481) |

## What reviewers say

### Oil4Green

[App page](https://appshunter.io/ios/app/oil4green/id6450668593)

**Features:** macOS Compatibility

**In-app purchases:** none


### QR

[App page](https://appshunter.io/ios/app/qr-code-qr-reader-and-maker/id6758352038)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| QR Scanner Premium  Monthly | $0.99 | per month |
| QR Scanner Premium - Yearly | $9.99 | per year |


## Frequently asked questions

### Is Oil4Green free?

Oil4Green is free to download, with no in-app purchases.

### Is QR free?

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

### Do Oil4Green or QR have ads?

QR shows ads; Oil4Green does not.

### Which is updated more often, Oil4Green or QR?

Oil4Green ships an update every 17 months, and QR daily. Most recently, Oil4Green was updated on September 16, 2026 and QR on August 29, 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.*