Block’s Marble Auctions vs Koso App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Block’s Marble Auctions
Participate in live marble auctions from your mobile device. Preview upcoming lots, track your bidding history, and receive notifications for items of interest. This app allows you to bid on antique, vintage, and contemporary marbles and related collectibles.
- Preview upcoming lots
- Watch live auctions
- Bid in real-time
- Quick registration
- Track bidding history
- Push notifications for items of interest
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Block's Marble Auctions, located in Trumbull CT was established in 1989. The auction house conducts numerous sales a year with a focus on antique, vintage and contemporary marbles and marble related items. Our auctions feature an impressive selection including Antique Handmade, Antique and Vintage Machine Made, and Contemporary Handmade Marbles, as well as other items of interest to marble collectors. We have been featured numerous publications and tv and radio programs. Blocks Marble Auctions is the oldest and largest continuously running marble auctioneer. With the Block's Marble Auctions app, you can preview, watch and bid in our marble auctions from your mobile / tablet device. Participate in our sales while on- the-go and gain access to the following features: •Quick Registration •Following upcoming lots of interest •Push notifications to ensure you engage on items of interest •Track bidding history and activity •Watch live auctions
Koso App
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The Koso Med mobile app gives authorized Koso Med members convenient access to their back-office information anytime, anywhere. Stay connected to your Koso Med business and access important information directly from your mobile device. Whether you are at home, traveling, or attending an event, the Koso Med app makes it easy to access important business information wherever you go. A valid Koso Med member account is required to access the app. Available features and information may vary depending on account status, eligibility, country, or region.
Screenshots
Verdict
The clearest difference is update cadence: Koso App at every 9 days against Block’s Marble Auctions's every 11 months. Block’s Marble Auctions's advantage is iOS requirement (12.0 vs 15.1). On price, ads, 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.
Block’s Marble Auctions ships an update every 11 months, Koso App every 9 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.
| Parameter | Block’s Marble Auctions | Koso App |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 11 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 55 MB | 34 MB |
| Age rating | 17+ | 17+ |
| Developer | Bidsquare | Koso med |
In-app purchases
Block’s Marble Auctions
No in-app purchases
Koso App
No in-app purchases
Questions
Is Block’s Marble Auctions free?
Is Koso App free?
Do Block’s Marble Auctions or Koso App have ads?
Which is updated more often, Block’s Marble Auctions or Koso App?
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