# Sigma Mini vs Rattler Scanner

The clearest difference is device support: Sigma Mini at 3 against Rattler Scanner's 1. Sigma Mini also leads on iOS requirement (11.0 vs 16.4). On price, rating, ratings volume and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Sigma Mini against 5.0 for Rattler Scanner. Both are backed by a comparable volume of ratings — 2 and 5 respectively.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Sigma Mini | Rattler Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/sigma-mini/id1548367153/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/rattler-scanner/id6466726995/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 6 MB | 1 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Richard Bessette](https://appshunter.io/developer/1548367155) | [Bytes and Bounty, LLC](https://appshunter.io/developer/1707693159) |

## 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


### Rattler Scanner

[App page](https://appshunter.io/ios/app/rattler-scanner/id6466726995)

This app uses machine vision to read coin identification numbers from slabs. It supports live video and imported images, allowing users to quickly look up coin prices and certification details online without manual entry.

**Highlights:** Reads coin identification numbers from slabs, Supports PCGS, NGC, and CACG slabs, Live video text recognition, Import image for recognition, Pan and zoom for precise identification, Direct links to price guides and certification info

**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 Rattler Scanner free?

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

### Which has better reviews, Sigma Mini or Rattler Scanner?

Sigma Mini and Rattler Scanner are both rated 5.0 out of 5 on the App Store, from 2 and 5 ratings respectively.

### Do Sigma Mini or Rattler Scanner have ads?

Neither Sigma Mini nor Rattler Scanner shows ads.

### Which is updated more often, Sigma Mini or Rattler Scanner?

Sigma Mini ships an update every 2 months, and Rattler Scanner every 2 months. Most recently, Sigma Mini was updated on October 1, 2026 and Rattler Scanner on October 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.*