Blackwell Auctions vs Gem
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Blackwell Auctions
Participate in live and online auctions from your mobile device. Preview items, register easily, and receive notifications for your favorite lots. Track your bidding history and activity conveniently.
- Preview auction items
- Watch live auctions
- Bid in real-time
- Easy registration
- Push notifications
- Bidding history access
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Blackwell Auctions has provided buyers with unique, sought-after items since 2016. We are located in Clearwater, Florida and conduct auctions on several online venues and in-person at our gallery. We are always accepting quality consignments and can offer consignors competitive rates and a worldwide audience for their items. With our Blackwell Auctions app, you can preview, watch and bid in our auctions from your mobile/tablet device. Participate in our sales while on-the-go and utilize features such as easy registration, push notifications to ensure you don't miss your favorite items, and access to bidding history and activity.
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: Blackwell Auctions at none against Gem's shown. Blackwell Auctions also leads on update cadence (every 6 months vs every 27 months). Gem's advantage is iOS requirement (13.4 vs 16.0). On price, 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.
Blackwell Auctions ships an update every 6 months, Gem every 27 months. The most recent releases landed on July 5, 2026 and March 22, 2026 respectively.
| Parameter | Blackwell Auctions | Gem |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (10 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 6 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 | 135 MB | 41 MB |
| Age rating | 9+ | 4+ |
| Developer | Blackwell Auctions LLC | Gem Mint Auctions, LLC. |
In-app purchases
Blackwell Auctions
No in-app purchases
Gem
No in-app purchases
