# Karat Kalculator vs STS Refiners Inc

The clearest difference is rating: STS Refiners Inc at 5.0 against Karat Kalculator's 3.0. STS Refiners Inc also leads on monetization model (free vs paid) and review sentiment (100% vs 73%). Karat Kalculator's advantage is update cadence (every 2 weeks vs monthly). On price, ratings volume, ads and in-app purchases 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 3.0. Both are backed by a comparable volume of ratings — 4 and 5 respectively. Written reviews point the same way: 73% of Karat Kalculator's written reviews are positive against 100% of STS Refiners Inc's.

Karat Kalculator ships an update every 2 weeks, STS Refiners Inc monthly. The most recent releases landed on October 6, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Karat Kalculator | STS Refiners Inc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/karat-kalculator/id433835471/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/sts-refiners-inc/id1518780708/reviews)** |
| Number of ratings | 4 | **5** |
| Positive reviews | 72.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Paid | **Free** |
| Size | 64 MB | 140 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mid-States Recycling Inc](https://appshunter.io/developer/433835474) | [STS GOLD REFINERS INC.](https://appshunter.io/developer/1518613964) |

## What reviewers say

### Karat Kalculator

[App page](https://appshunter.io/ios/app/karat-kalculator/id433835471)

Estimate the value of your gold scrap by entering weights for different karats. It fetches current gold prices and adjusts for historical recovery data. View total estimated net value, charges, and other useful information.

**Highlights:** Estimate gold scrap value, Enter weights by karat, Fetch current gold prices, Adjust for future gold prices, View estimated net value, Includes associated charges

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Karat Kalculator free?

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

### Is STS Refiners Inc free?

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

### Which has better reviews, Karat Kalculator or STS Refiners Inc?

STS Refiners Inc is rated higher. Karat Kalculator averages 3.0 out of 5 from 4 ratings, while STS Refiners Inc averages 5.0 from 5 ratings.

### Do Karat Kalculator or STS Refiners Inc have ads?

Neither Karat Kalculator nor STS Refiners Inc shows ads.

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

Karat Kalculator ships an update every 2 weeks, and STS Refiners Inc monthly. Most recently, Karat Kalculator was updated on October 6, 2026 and STS Refiners Inc on September 21, 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.*