# STS Refiners Inc vs Certi

The clearest difference is rating: STS Refiners Inc at 5.0 against Certi's 4.0. STS Refiners Inc also leads on iOS requirement (12.0 vs 15.1). Certi's advantage is update cadence (every 3 days vs monthly). On price, review sentiment, ratings volume and ads there is nothing between them.

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

STS Refiners Inc holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

STS Refiners Inc ships an update monthly, Certi every 3 days. The most recent releases landed on September 21, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | STS Refiners Inc | Certi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/sts-refiners-inc/id1518780708/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/certi-lock/id6745152014/reviews) |
| Number of ratings | **5** | 4 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free | Free |
| Size | 140 MB | 39 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [STS GOLD REFINERS INC.](https://appshunter.io/developer/1518613964) | [Scottsdale Mint LLLP](https://appshunter.io/developer/1078693720) |

## What reviewers say

### STS Refiners Inc

[App page](https://appshunter.io/ios/app/sts-refiners-inc/id1518780708)

This B2B platform provides businesses with tools for precious metal refining. Calculate scrap prices for gold, silver, and platinum, view live market data, and receive custom payout rates. Set price alerts and use unit conversions with sharing and push notification options.

**Highlights:** Scrap price calculation for gold, silver, platinum, Live market prices and London Fix, Price alerts and notifications, Unit conversions, Custom payout rates for registered users, Shareable data

**Features:** macOS Compatibility

**In-app purchases:** none


### Certi

[App page](https://appshunter.io/ios/app/certi-lock/id6745152014)

This app uses synthetic DNA technology to authenticate precious metals, providing instant verification of gold and silver investments. Scan a card to see factory-sealed photos and confirm the authenticity of your items, ensuring peace of mind for investors.

**Highlights:** Synthetic DNA authentication, Barcode scanning, Factory-sealed product photos, Tamper-evident seal verification, Collection tracking, Instant results, Dark mode

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is STS Refiners Inc free?

STS Refiners Inc is free to download, with no in-app purchases.

### Is Certi free?

Certi is free to download, with no in-app purchases.

### Which has better reviews, STS Refiners Inc or Certi?

STS Refiners Inc is rated higher. STS Refiners Inc averages 5.0 out of 5 from 5 ratings, while Certi averages 4.0 from 4 ratings.

### Do STS Refiners Inc or Certi have ads?

Neither STS Refiners Inc nor Certi shows ads.

### Which is updated more often, STS Refiners Inc or Certi?

STS Refiners Inc ships an update monthly, and Certi every 3 days. Most recently, STS Refiners Inc was updated on September 21, 2026 and Certi on October 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*