GZ Auctions vs Gem
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GZ Auctions
This app allows collectors to buy and sell a wide range of items, from fine art to luxury goods. Users can preview, bid live, and track their auction activity directly from their mobile devices. It offers personalized services for sellers and a fair, professional experience for buyers.
- Preview upcoming lots
- Bid live with swipe interface
- Leave absentee bids
- Track bidding activity
- Watch live sales
- View sales calendar
- Quick registration
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Grant Zahajko Auctions gives collectors the chance to sell/buy items from fine art to sports collectibles, historical memorabilia to luxury items! For buyers, we are always striving to offer interesting objects for all levels of collecting in the most fair and professional manner to all. For sellers, we offer personalized & confidential auction services reaching millions making every effort to get your items maximum exposure worldwide. With the Grant Zahajko Auction app you can preview, watch, and bid in our auctions all from your mobile phone or tablet. Participate in our sales while on the go or at your leisure from your mobile device and gain access to the following features: - Quick registration - Follow upcoming lots and receive push notifications to ensure you never miss a chance to bid - Leave absentee bids - Bid live using our simple “swipe to bid” interface - Track your bidding activity - Watch live sales - View calendar of past and future sales
Gem
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The new Gem-Mint Auctions app lets you view our auction calendar and bid live in our auctions from your mobile device. Participate in our sales wherever you are using your mobile device and by gaining access to the following features:- - View calendar of past and future sales - Search lots - Save favorite lots - Register for upcoming sales - Receive reminders to ensure you never miss a chance to bid in a sale - Leave absentee bids - Bid live - Track your bidding activity
Screenshots
Verdict
The clearest difference is ads: GZ Auctions at none against Gem's shown. Gem's advantage is iOS requirement (13.4 vs 16.0). On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GZ Auctions ships an update every 15 months, Gem every 27 months. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.
| Parameter | GZ Auctions | Gem |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 15 months — better | Every 27 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.4 — better |
| Further details — not scored | ||
| Size | 136 MB | 41 MB |
| Age rating | 9+ | 4+ |
| Developer | Grant Zahajko Auctions LLC | Gem Mint Auctions, LLC. |
In-app purchases
GZ Auctions
No in-app purchases
Gem
No in-app purchases
