Auction Sniper vs StackerTools Coin and Bar Test
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Auction Sniper
Automate your eBay auction bidding to increase your chances of winning. This app places bids in the final seconds of auctions based on your preferences, saving you time and effort. Receive notifications for bid status and manage your snipes easily.
- Automated last-second bidding
- Import eBay watches
- Place, edit, and delete snipes
- Auction status notifications
- Sort search results
- PayPal funding
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Snipe to win eBay auctions using Auction Sniper for iOS! Welcome to hands-free auction bidding and winning. Back and better than ever, Auction Sniper will place an automated bid, based on your preferences, in the last seconds of an eBay auction to increase your chances of a winning bid. With the improved Auction Sniper app you can: • Save time by no longer having to watch the end of an auction. • Import eBay watches and easily place, edit and delete snipes. • App Notifications to let you know when you have been outbid, lose or win an Auction. • Sort searches by price, end time or newly listed. • Directly fund your Auction Sniper account with PayPal. • And more! Plus, you can try Auction Sniper for free! After you sign up, open the Auction Sniper activation email and click the "account activation" link to receive your 3 free snipes. After your first 3 winning snipes, you will be charged only 1.75% of the final auction price with fees as low as $0.35 USD for only the auctions you win.
StackerTools Coin and Bar Test
Detect counterfeit precious metals like gold, silver, and bullion using sound. This tool acts as a bar and coin tester, helping you verify authenticity.
- Counterfeit detection
- Verify gold coins
- Verify silver coins
- Test bullion
- Sound-based analysis
- Bar and coin tester
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Counterfeit Detection: Verify Gold Coins, Silver Coins, Rounds and Bars with Sound. StackerTools is a coin and bar tester that listens to the “ping” of your precious metals. Gently tap a coin and the app compares its ring with verified genuine examples, or tests it against a physics-backed acoustic model. The app is 100% included with the Pocket Pinger. The password is in the Bonus Pack. WHAT YOU CAN TEST • Gold and silver bullion coins such as American Eagles, Maple Leafs, Krugerrands and more • Silver rounds and 1 oz silver bars • Many other items and tests available, with more coming HOW IT WORKS Pick your coin or bar from the catalog, or search for it. Tap Start and gently ping the item. See the result in seconds: PASS, OK, CAUTION, or FAIL, with tips when a retest is needed. TEST MODES • Peaks: checks the item’s key ring tones • Run: tests several pings in a row • Pro: adds ping-time checks plus size and weight • Acoustic Models: measure your items for custom tests MORE FEATURES • Bookmark Favorites to find the items you test most • Search the catalog, with “See All” keeping your search • Sync the catalog to your phone for offline testing • Get Paid: upload test data and photos, or post new items to the catalog Questions? We’re here to help: Support@StackerTools.com
Screenshots
Verdict
The clearest difference is monetization model: StackerTools Coin and Bar Test at free against Auction Sniper's free with in-app purchases. StackerTools Coin and Bar Test also leads on update cadence (every 3 weeks vs every 2 months) and review sentiment (89% vs 77%). Auction Sniper's advantage is ratings volume (1.7K vs 44). On price, rating, ads and in-app purchases 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.
Auction Sniper holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Auction Sniper has 1.7K ratings behind it against 44, so its average is the more settled of the two. Written reviews complicate that: 77% of Auction Sniper's written reviews are positive against 89% of StackerTools Coin and Bar Test's, so the app with the better star average is not the one people write more warmly about.
Auction Sniper ships an update every 2 months, StackerTools Coin and Bar Test every 3 weeks. Both last shipped on October 24, 2026.
| Parameter | Auction Sniper | StackerTools Coin and Bar Test |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (1.7K ratings) — better | 4.5 (44 ratings) |
| Positive reviews | 77.5% of reviews | 88.9% of reviews — better |
| Number of ratings | 1.7K — better | 44 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 14 MB | 31 MB |
| Age rating | 17+ | 4+ |
| Developer | AuctionSniper.com | SoundMoneyMetals |
Customer experience
Auction Sniper
StackerTools Coin and Bar Test
Bugs and requests
Auction Sniper
Reported bugs
3 issues- App not loading or syncing with eBay account
- Disappearing or resetting of bid amounts
- Inconsistent performance across devices and OS versions
Requested features
4 requests- Improved mobile app experience with more features
- Option to set default currency for bids
- Better notification system for outbid alerts
- Ability to view bid history and analytics
StackerTools Coin and Bar Test
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Auction Sniper
No in-app purchases
StackerTools Coin and Bar Test
No in-app purchases
Questions
Is Auction Sniper free?
Is StackerTools Coin and Bar Test free?
Which has better reviews, Auction Sniper or StackerTools Coin and Bar Test?
Do Auction Sniper or StackerTools Coin and Bar Test have ads?
Which is updated more often, Auction Sniper or StackerTools Coin and Bar Test?
Other comparisons
