Comparison

BidBro vs Stacker Gold & Silver Exchange

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

BidBro

Discover collectible items through live auction streams. Engage with sellers and other collectors in real-time, ask questions, and bid on items. Browse Buy Now options and manage your purchases.

Highlights
  • Live auction streams
  • Real-time chat with collectors
  • Detailed item previews
  • Quick bid and custom bid options
  • Buy Now purchases
  • Order management
  • Upcoming stream previews
Features
Read full description

Find your next brick set, minifigure or collectible on BidBro. Join live streams, get a closer look at what’s on the table, and take part in the conversation as the action unfolds. See the details before you decide. Watch items being presented live, ask questions in chat, and share the moment with other collectors. Whether you have a particular set in mind or just want to see what turns up, there’s a place for you in the room. Bid when you’re ready. Choose a quick bid or enter your own amount, keep an eye on the current price and countdown, then swipe to place your bid. Prefer a direct purchase? Browse the Buy Now items available in the stream. Look ahead to your next find. Explore live and upcoming streams, then check the queue to see which items are coming next. Move between watching, chatting and browsing without losing the context of the live room. Enjoy more space on iPhone Duo. Expand your display to watch the stream on the left while bidding and chat stay together on the right. Fold it back for the compact experience, with the same room and controls close at hand. Keep your purchases organized after the live action ends. Open Orders to review what you’ve bought and check the information available for each purchase. Your next find could be a familiar favorite or an unexpected addition. Take a closer look, join the room, and make it part of your collection. Watch. Bid. Collect.

About

Stacker Gold & Silver Exchange

This app helps precious metals enthusiasts track their collections, monitor market prices, and buy, sell, or trade items. Discover verified dealers, connect with other members, and stay informed with news and event listings. Advanced AI tools assist with item identification and pricing.

Highlights
  • Track precious metal holdings
  • Monitor live market prices
  • Buy, sell, and trade items
  • Discover verified dealers
  • In-app messaging
  • Save favorites and wish lists
  • Precious metals news
  • AI-powered tools
Features
Read full description

Kelt Marketplace is the premium app for precious metals collectors, stackers, and traders who want one place to track their holdings, follow the market, discover opportunities, and connect with the community. Whether you collect gold, silver, platinum, or palladium, Kelt Marketplace helps you stay organized and informed with a clean, fast, mobile-first experience built for the way real stackers buy, sell, trade, and manage their collections. TRACK YOUR STACK Build your personal portfolio with detailed holdings for coins, bars, rounds, and other precious metal assets. Add quantity, weight, acquisition cost, and product details, then view your collection in a polished dashboard designed to make your stack easy to understand at a glance. FOLLOW LIVE MARKET PRICES Monitor spot prices with a dedicated markets experience built around precious metals. Keep up with price movement, check current values, and use market context to make smarter decisions when buying, selling, or trading. BUY, SELL, AND TRADE IN THE MARKETPLACE Browse listings from other users, explore what people are selling or trading, and create your own listings with photos and item details. Kelt’s marketplace is built specifically for the precious metals world, making it easier to find relevant listings and connect with serious buyers and sellers. DISCOVER VERIFIED DEALERS Explore a growing dealer directory and find trusted businesses within the community. Users can browse dealer profiles, request quotes, and connect more directly with sellers and shops participating in the Kelt Marketplace ecosystem. MESSAGE OTHER MEMBERS Use built-in messaging to communicate about listings, offers, quotes, and exchange opportunities. Kelt Marketplace makes it easier to move conversations from discovery to action without leaving the app. SAVE FAVORITES AND BUILD A WISH LIST Keep track of listings, dealers, and items you want most. Your wish list helps other users understand what you’re looking for, making trades and conversations more relevant. STAY INFORMED WITH PRECIOUS METALS NEWS Read the latest precious metals headlines and market-related news in a streamlined in-app reading experience designed to reduce clutter and keep the focus on the story. EXPLORE COIN SHOWS AND EVENTS Browse upcoming coin shows and related events, save the ones that matter to you, and stay plugged into the wider collector and dealer community. USE SMART AI TOOLS Kelt Marketplace includes advanced AI-powered tools designed for collectors and traders, including item identification, pricing guidance, and counterfeit-awareness support. These tools are built to help you evaluate pieces more confidently and make better-informed decisions. AI results are intended as guidance and should be independently verified for important transactions. JOIN THE COMMUNITY Kelt Marketplace is more than a tracker. It is a place for stackers to share pickups, talk markets, discuss strategy, and participate in a growing network of people passionate about precious metals. PREMIUM EXPERIENCE Kelt Marketplace offers a premium membership that unlocks powerful features across stack management, marketplace tools, messaging, coin shows, community access, and AI utilities. Kelt Marketplace is built for: • Precious metals collectors • Gold and silver stackers • Coin enthusiasts • Bullion buyers and sellers • Dealers and traders • Anyone who wants a better way to manage and explore the world of precious metals If you take precious metals seriously, Kelt Marketplace gives you a premium home base for your stack, your market activity, and your next opportunity. If you want, I can also give you: Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

BidBro4 screens
Stacker Gold & Silver Exchange4 screens

Verdict

The call

The clearest difference is rating: Stacker Gold & Silver Exchange at 5.0 against BidBro's 4.0. Stacker Gold & Silver Exchange also leads on update cadence (every 2 days vs every 10 days). BidBro's advantage is in-app purchases (none vs 6) and ratings volume (41 vs 1). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Stacker Gold & Silver Exchange sells 6 in-app purchases, starting at $5.95 per month. BidBro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Stacker Gold & Silver Exchange holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: BidBro has 41 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

BidBro ships an update every 10 days, Stacker Gold & Silver Exchange every 2 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard6 real differences · 4 level
BidBro versus Stacker Gold & Silver Exchange: the parameters behind the verdict, then further details
ParameterBidBroStacker Gold & Silver Exchange
PriceFreeFree
Rating4.0 (41 ratings)5.0 (1 ratings) — better
Positive reviews76.2% of reviews—
Number of ratings41 — better1
Update frequencyEvery 10 daysEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better18.0
Further details — not scored
Size100 MB20 MB
Age rating17+4+
DeveloperREPUBLICBRICKS LLCSivility Systems LLC

Customer experience

BidBro

All ratings40 ratings
Positive72.5%
Neutral2.5%
Negative25.0%
Written reviews21 reviews
Positive76.2%
Neutral0.0%
Negative23.8%

Stacker Gold & Silver Exchange

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

BidBro

No in-app purchases

6 purchases

Stacker Gold & Silver Exchange

Subscriptions4
  • Monthly Subscription3 Days trial$5.951 Month
  • 3-Month Subscription3 Days trial$14.953 Months
  • 6-Month Subscription3 Days trial$24.956 Months
Show 1 more
  • 12-Month Subscription3 Days trial$59.991 Year
One-time2
  • Collector Founders Club$5.95
  • Founders Club$149.00

Questions

Is BidBro free?
BidBro is free to download, with no in-app purchases.
Is Stacker Gold & Silver Exchange free?
Stacker Gold & Silver Exchange is free to download, with in-app purchases available.
Which has better reviews, BidBro or Stacker Gold & Silver Exchange?
Stacker Gold & Silver Exchange is rated higher. BidBro averages 4.0 out of 5 from 41 ratings, while Stacker Gold & Silver Exchange averages 5.0 from 1 ratings.
Do BidBro or Stacker Gold & Silver Exchange have ads?
Neither BidBro nor Stacker Gold & Silver Exchange shows ads.
Which is updated more often, BidBro or Stacker Gold & Silver Exchange?
BidBro ships an update every 10 days, and Stacker Gold & Silver Exchange every 2 days. Most recently, BidBro was updated on November 3, 2026 and Stacker Gold & Silver Exchange on November 5, 2026.

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