# GAMMA AR vs TNB GRIS

GAMMA AR and TNB GRIS are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

GAMMA AR ships an update every 2 weeks, TNB GRIS every 9 days. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | GAMMA AR | TNB GRIS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (8 ratings)](https://appshunter.io/ios/app/gamma-ar/id1298017298/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 398 MB | 92 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [GAMMA Technologies](https://appshunter.io/developer/1495307075) | [TNB GRIS](https://appshunter.io/developer/1861397789) |

## What reviewers say

### GAMMA AR

[App page](https://appshunter.io/ios/app/gamma-ar/id1298017298)

Visualize 3D BIM models on construction sites using augmented reality. Compare real-world conditions with digital plans to prevent errors, reduce costs, and improve communication between site and office.

**Highlights:** Augmented reality BIM model overlay, On-site construction monitoring, Error detection and prevention, Digital communication channels, Integration with Autodesk, Procore, BIMCollab, Issue synchronization with cloud platforms

**Features:** Vision Pro support

**In-app purchases:** none


### TNB GRIS

[App page](https://appshunter.io/ios/app/tnb-gris/id6756558110)

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

**In-app purchases:** none


## Frequently asked questions

### Is GAMMA AR free?

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

### Is TNB GRIS free?

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

### Do GAMMA AR or TNB GRIS have ads?

Neither GAMMA AR nor TNB GRIS shows ads.

### Which is updated more often, GAMMA AR or TNB GRIS?

GAMMA AR ships an update every 2 weeks, and TNB GRIS every 9 days. Most recently, GAMMA AR was updated on November 6, 2026 and TNB GRIS on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*