# Sigma Mini vs 90% Silver Coin Calculator

The clearest difference is rating: Sigma Mini at 4.0 against 90% Silver Coin Calculator's 3.0. Sigma Mini also leads on review sentiment (38% vs 17%). 90% Silver Coin Calculator's advantage is update cadence (weekly vs every 2 months). 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.

Sigma Mini holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 8 respectively. Written reviews point the same way: 38% of Sigma Mini's written reviews are positive against 17% of 90% Silver Coin Calculator's.

Sigma Mini ships an update every 2 months, 90% Silver Coin Calculator weekly. Both last shipped on November 3, 2026.

## The numbers

| Metric | Sigma Mini | 90% Silver Coin Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/sigma-mini/id1548367153/reviews)** | [3.0 (8 ratings)](https://appshunter.io/ios/app/90-silver-coin-calculator/id6464687038/reviews) |
| Number of ratings | 4 | **8** |
| Positive reviews | **37.5% of reviews** | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | Free |
| Size | 6 MB | 30 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Richard Bessette](https://appshunter.io/developer/1548367155) | [Blake Warrington](https://appshunter.io/developer/1706368218) |

## What reviewers say

### Sigma Mini

[App page](https://appshunter.io/ios/app/sigma-mini/id1548367153)

This utility app connects to a specific hardware device for enhanced functionality. It allows users to interact with and control the connected device, providing a seamless experience for its intended purpose. The application is designed for users who own the associated hardware.

**Highlights:** Connects to Sigma Metalytics Mini, Device interaction and control, Enhanced functionality for users, Seamless user experience

**Features:** macOS Compatibility

**In-app purchases:** none


### 90% Silver Coin Calculator

[App page](https://appshunter.io/ios/app/90-silver-coin-calculator/id6464687038)

Easily calculate the value of your 90% silver coins. Input individual coin details to determine their worth and explore alternative forms of currency for commerce.

**Highlights:** Calculate 90% silver coin value, Input individual coin details, Explore alternative currency forms, Learn about alternative commerce

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sigma Mini free?

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

### Is 90% Silver Coin Calculator free?

90% Silver Coin Calculator is free to download, with no in-app purchases.

### Which has better reviews, Sigma Mini or 90% Silver Coin Calculator?

Sigma Mini is rated higher. Sigma Mini averages 4.0 out of 5 from 4 ratings, while 90% Silver Coin Calculator averages 3.0 from 8 ratings.

### Do Sigma Mini or 90% Silver Coin Calculator have ads?

Neither Sigma Mini nor 90% Silver Coin Calculator shows ads.

### Which is updated more often, Sigma Mini or 90% Silver Coin Calculator?

Sigma Mini ships an update every 2 months, and 90% Silver Coin Calculator weekly. Most recently, Sigma Mini was updated on November 3, 2026 and 90% Silver Coin Calculator on November 3, 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.*