# Auctria Mobile Bidding vs Trace Viewer

The clearest difference is review sentiment: Trace Viewer at 100% against Auctria Mobile Bidding's 63%. Trace Viewer also leads on rating (5.0 vs 4.7) and update cadence (fortnightly vs every 6 weeks). Auctria Mobile Bidding's advantage is ratings volume (1K vs 5). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Trace Viewer holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Auctria Mobile Bidding has 1K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 63% of Auctria Mobile Bidding's written reviews are positive against 100% of Trace Viewer's.

Auctria Mobile Bidding ships an update every 6 weeks, Trace Viewer fortnightly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Auctria Mobile Bidding | Trace Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (1K ratings)](https://appshunter.io/ios/app/auctria-mobile-bidding/id1388761108/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/trace-viewer/id1666800621/reviews)** |
| Number of ratings | **1K** | 5 |
| Positive reviews | 62.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free | Free |
| Size | 41 MB | 183 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Auctria](https://appshunter.io/developer/1388761107) | [Trace3d Inc](https://appshunter.io/developer/1532686125) |

## What reviewers say

### Auctria Mobile Bidding

[App page](https://appshunter.io/ios/app/auctria-mobile-bidding/id1388761108)

Engage in fundraising auctions directly from your mobile device. Browse item details, place bids efficiently, and receive instant notifications when you've been outbid.

**Highlights:** Participate in fundraising auctions, View item details, Place bids, Receive outbid notifications, Direct mobile access

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use and navigate
- 🚀 Robust features and configurable
- 💡 Great import, export, and copy website features
- 👍 Excellent customer service and technical support

**What reviewers complain about**

- 🐛 Missing basic functionality for donors
- 🐛 Lack of organization and communication from the owner
- 🐛 Threatening and unprofessional behavior from the owner

**Reported bugs**

- Login issues and inability to access the app
- Difficulties with bidding and making changes

**Requested features**

- Allow donors to check auction item status directly
- Implement push notifications for bid updates


### Trace Viewer

[App page](https://appshunter.io/ios/app/trace-viewer/id1666800621)

Explore immersive AR experiences and 3D holographic tours on your device. Discover curated content at verified locations, bringing art, products, and educational guides to life around you.

**Highlights:** View 3D recordings, products, art, and installations, Access curated AR content at verified destinations, Learn from guides, curators, and experts in AR, Cross-device compatibility for phones, tablets, and XR Headsets, Immersive AR experiences

**In-app purchases:** none


## Frequently asked questions

### Is Auctria Mobile Bidding free?

Auctria Mobile Bidding is free to download, with no in-app purchases.

### Is Trace Viewer free?

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

### Which has better reviews, Auctria Mobile Bidding or Trace Viewer?

Trace Viewer is rated higher. Auctria Mobile Bidding averages 4.7 out of 5 from 1K ratings, while Trace Viewer averages 5.0 from 5 ratings.

### Do Auctria Mobile Bidding or Trace Viewer have ads?

Neither Auctria Mobile Bidding nor Trace Viewer shows ads.

### Which is updated more often, Auctria Mobile Bidding or Trace Viewer?

Auctria Mobile Bidding ships an update every 6 weeks, and Trace Viewer fortnightly. Most recently, Auctria Mobile Bidding was updated on October 24, 2026 and Trace Viewer 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.*