# Earth Science Systems Surveyor vs QR/BarCode Reader

The clearest difference is ads: Earth Science Systems Surveyor at none against QR/BarCode Reader's shown. Earth Science Systems Surveyor also leads on iOS requirement (15.5 vs 17.0). QR/BarCode Reader's advantage is update cadence (every 4 days vs every 3 months). On price, in-app purchases and device support there is nothing between them.

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

Earth Science Systems Surveyor ships an update every 3 months, QR/BarCode Reader every 4 days. The most recent releases landed on September 15, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Earth Science Systems Surveyor | QR/BarCode Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 4 days** |
| Size | 55 MB | 24 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Earth Science Systems, LLC](https://appshunter.io/developer/1721440272) | [Taisuke Hosokawa](https://appshunter.io/developer/1585548762) |

## What reviewers say

### Earth Science Systems Surveyor

[App page](https://appshunter.io/ios/app/earth-science-systems-surveyor/id6474365145)

**In-app purchases:** none


### QR/BarCode Reader

[App page](https://appshunter.io/ios/app/qrbarcode-reader/id6742743893)

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

**In-app purchases:** none


## Frequently asked questions

### Is Earth Science Systems Surveyor free?

Earth Science Systems Surveyor is free to download, with no in-app purchases.

### Is QR/BarCode Reader free?

QR/BarCode Reader is free to download, with no in-app purchases.

### Do Earth Science Systems Surveyor or QR/BarCode Reader have ads?

QR/BarCode Reader shows ads; Earth Science Systems Surveyor does not.

### Which is updated more often, Earth Science Systems Surveyor or QR/BarCode Reader?

Earth Science Systems Surveyor ships an update every 3 months, and QR/BarCode Reader every 4 days. Most recently, Earth Science Systems Surveyor was updated on September 15, 2026 and QR/BarCode Reader on October 14, 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.*