# Proximity vs SmartPLL

The clearest difference is price: SmartPLL at Free against Proximity's $1.99. SmartPLL also leads on update cadence (every 7 months vs every 14 months). On rating, ratings volume, ads and in-app purchases there is nothing between them.

SmartPLL is free to download; Proximity costs $1.99 up front. 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 Proximity against 5.0 for SmartPLL. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Proximity ships an update every 14 months, SmartPLL every 7 months. The most recent releases landed on October 17, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Proximity | SmartPLL |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/proximity-access-card-calc/id774601885/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/smartpll/id1623497556/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 7 months** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 1 MB |
| Requires iOS | **12.0** | 13.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Farren Domenici](https://appshunter.io/developer/583666476) | [Z-Communications](https://appshunter.io/developer/1285508714) |

## 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


### SmartPLL

[App page](https://appshunter.io/ios/app/smartpll/id1623497556)

This application allows users to program and control Z-COMM SSG series Smart Phase Locked Loop (PLL) modules. Adjust frequency, sweep mode, step time, and power output via Bluetooth or USB. Features LED status indicators and a rugged enclosure for versatile use.

**Highlights:** Programmable frequency, sweep, and step settings, Bluetooth and USB connectivity, LED status indicators, Rugged enclosure for field use, Internal or external reference input, High performance RF tool

**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 SmartPLL free?

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

### Which has better reviews, Proximity or SmartPLL?

Proximity and SmartPLL are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Proximity or SmartPLL have ads?

Neither Proximity nor SmartPLL shows ads.

### Which is updated more often, Proximity or SmartPLL?

Proximity ships an update every 14 months, and SmartPLL every 7 months. Most recently, Proximity was updated on October 17, 2026 and SmartPLL on October 30, 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.*