Comparison

Merchant Link vs Guaranteed Contacts

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

Head to head
About

Merchant Link

This app allows qualified merchants to process transactions for program members using S3 cards and scan qualifying items. Merchants can access reporting, view transaction history, and manage their profile. It facilitates purchases of health-related items and OTC drugs.

Highlights
  • Process S3 transactions
  • Scan S3 cards
  • Scan UPC barcodes
  • Access settlement reporting
  • View transaction history
  • Email receipts to members
  • Capture receipt images
Read full description

The S3 Merchant Link mobile app is available for qualified merchants and retailers. You must submit an online application at S3MerchantLink.com in order to qualify and access the S3 Merchant Link mobile app. With the S3 Merchant Link mobile app, you can access the S3 retailer network to process S3 transactions for program members who receive benefits to spend on qualifying items including non-prescription OTC drugs and health-related items like antacids, cough drops, first aid supplies, pain relief, vitamins and more! With S3 Merchant Link, you can: Scan S3 cards to conduct balance inquiries and purchases for qualifying items. Scan UPC barcodes to identify qualifying items. Access settlement reporting and view transaction history. Email receipts to S3 members for completed transactions. Capture receipt images for completed transaction. Access the S3 Merchant Link web portal to view and manage your merchant profile including store locations and mobile app user access.

About

Guaranteed Contacts

Read full description

Guaranteed Contacts: Transform Your Business Cell Phone Calls Tired of seeing your outgoing business cell phone calls labeled as 'scam likely' on your customer's caller ID? Say goodbye to missed opportunities and customer mistrust with the 'Guaranteed Contacts' app – the ultimate solution for home service providers, including plumbers, electricians, HVAC techs, home health nurses, and more. ■ Seamless Professionalism: With Guaranteed Contacts, your business calls will always display your business name, not a suspicious label. Build trust with your clients from the very first ring. ■ Effortless Operation: Using the app is a breeze. Simply open it, select a contact, and make your call. It's that easy! No complex setups, no tech hassles. ■ Reliable Support: While Guaranteed Contacts, just works, if you run into a snag, tech support is readily available right in the app. ■ Ideal for Service Providers: Guaranteed Contacts is tailored for professionals like you, ensuring that your business image remains intact. No more frustrating labels or misunderstandings. ■ User Satisfaction: Join an ever growing number of satisfied users who have already taken control of their professional image with Guaranteed Contacts. ■ Boost Your Business: Make every call count and enhance your reputation. When clients see your trusted number, they're more likely to answer, resulting in increased business opportunities. ■ Data Privacy: We take your privacy seriously. Guaranteed Contacts operates securely and does not compromise your personal or business data. Your information remains confidential. ■ Download Today: Don't let your calls go unnoticed. Download Guaranteed Contacts now and redefine professionalism, one call at a time. ■ Get Started: Visit our website or your app store to download Guaranteed Contacts and elevate your business image. Don't settle for being labeled 'scam likely.' Make your business shine with Guaranteed Contacts – where professionalism meets reliability. Download now and make every call count!"

Screenshots

Merchant Link4 screens
Guaranteed Contacts4 screens

Verdict

The call

The clearest difference is update cadence: Guaranteed Contacts at every 2 weeks against Merchant Link's every 5 weeks. Guaranteed Contacts also leads on iOS requirement (11.0 vs 14.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Merchant Link ships an update every 5 weeks, Guaranteed Contacts every 2 weeks. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
Merchant Link versus Guaranteed Contacts: the parameters behind the verdict, then further details
ParameterMerchant LinkGuaranteed Contacts
PriceFreeFree
Rating3.2 (14 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings14 — better—
Update frequencyEvery 5 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.011.0 — better
Further details — not scored
Size43 MB33 MB
Age rating4+4+
DeveloperSolutran, Inc.MummaGraphics, Inc.

In-app purchases

None

Merchant Link

No in-app purchases

None

Guaranteed Contacts

No in-app purchases

Questions

Is Merchant Link free?
Merchant Link is free to download, with no in-app purchases.
Is Guaranteed Contacts free?
Guaranteed Contacts is free to download, with no in-app purchases.
Do Merchant Link or Guaranteed Contacts have ads?
Neither Merchant Link nor Guaranteed Contacts shows ads.
Which is updated more often, Merchant Link or Guaranteed Contacts?
Merchant Link ships an update every 5 weeks, and Guaranteed Contacts every 2 weeks. Most recently, Merchant Link was updated on October 15, 2026 and Guaranteed Contacts on October 7, 2026.

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