# GasSCAN vs TT Solar

The clearest difference is update cadence: TT Solar at weekly against GasSCAN's every 4 months. TT Solar also leads on iOS requirement (13.0 vs 15.0). On price, ads, 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.

GasSCAN ships an update every 4 months, TT Solar weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | GasSCAN | TT Solar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (8 ratings)](https://appshunter.io/ios/app/gasscan/id1361183535/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Free | — |
| Size | 517 MB | 7 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Magnolia River](https://appshunter.io/developer/691329552) | [攀 杨](https://appshunter.io/developer/1647291270) |

## What reviewers say

### GasSCAN

[App page](https://appshunter.io/ios/app/gasscan/id1361183535)

Scan barcodes or QR codes that comply with ASTM F2897 standards. The app records scan data along with GPS location, allowing for easy export of scan lists in CSV format for GIS integration.

**Highlights:** ASTM F2897 barcode scanning, QR code scanning, GPS data logging, Scan history storage, CSV export, ArcGIS Online integration

**Features:** macOS Compatibility

**In-app purchases:** none


### TT Solar

[App page](https://appshunter.io/ios/app/tt-solar/id6761873051)

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

**In-app purchases:** none


## Frequently asked questions

### Is GasSCAN free?

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

### Is TT Solar free?

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

### Do GasSCAN or TT Solar have ads?

Neither GasSCAN nor TT Solar shows ads.

### Which is updated more often, GasSCAN or TT Solar?

GasSCAN ships an update every 4 months, and TT Solar weekly. Most recently, GasSCAN was updated on October 24, 2026 and TT Solar on October 24, 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.*