# Proximity vs Ernitec viewer

The clearest difference is price: Ernitec viewer at Free against Proximity's $1.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Ernitec viewer is free to download; Proximity costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Proximity ships an update every 14 months, Ernitec viewer every 9 months. The most recent releases landed on October 17, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Proximity | Ernitec viewer |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/proximity-access-card-calc/id774601885/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 9 months** |
| Monetization | Paid | — |
| Size | 1 MB | 120 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Farren Domenici](https://appshunter.io/developer/583666476) | [EET EUROPARTS](https://appshunter.io/developer/900389867) |

## What reviewers say

### Proximity

[App page](https://appshunter.io/ios/app/proximity-access-card-calc/id774601885)

This utility helps determine the correct number and facility code for access cards or fobs. It converts binary or hexadecimal card values into usable data, and can also reverse the process by generating binary values from facility codes and card numbers.

**Highlights:** Binary to number conversion, Hexadecimal to number conversion, Number to binary generation, Supports multiple bit lengths, Supports numerous card formats, Reverse calculation functionality

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Ernitec viewer

[App page](https://appshunter.io/ios/app/ernitec-viewer/id6449019085)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Proximity free?

Proximity costs $1.99, with no in-app purchases.

### Is Ernitec viewer free?

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

### Do Proximity or Ernitec viewer have ads?

Neither Proximity nor Ernitec viewer shows ads.

### Which is updated more often, Proximity or Ernitec viewer?

Proximity ships an update every 14 months, and Ernitec viewer every 9 months. Most recently, Proximity was updated on October 17, 2026 and Ernitec viewer on October 24, 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.*