# All Unit Conversion vs Proximity Lock

The clearest difference is review sentiment: All Unit Conversion at 50% against Proximity Lock's 0%. All Unit Conversion also leads on in-app purchases (none vs 1) and ratings volume (17 vs 1). Proximity Lock's advantage is rating (5.0 vs 4.6) and update cadence (every 9 days vs every 2 months). On price, ads, monetization model and iOS requirement there is nothing between them.

Both are free to download. Proximity Lock sells 1 one-off in-app purchase. All Unit Conversion asks for nothing beyond the download.

Proximity Lock holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: All Unit Conversion has 17 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of All Unit Conversion's written reviews are positive against 0% of Proximity Lock's, so the app with the better star average is not the one people write more warmly about.

All Unit Conversion ships an update every 2 months, Proximity Lock every 9 days. The most recent releases landed on September 13, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | All Unit Conversion | Proximity Lock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (17 ratings)](https://appshunter.io/ios/app/all-unit-conversion/id1418597453/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/proximity-lock-smart-autolock/id6760981832/reviews)** |
| Number of ratings | **17** | 1 |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Free | Free |
| Size | 22 MB | 20 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Tiago Do Couto](https://appshunter.io/developer/1291604717) | [12BAY TECHNOLOGY COMPANY LIMITED](https://appshunter.io/developer/1191396801) |

## What reviewers say

### All Unit Conversion

[App page](https://appshunter.io/ios/app/all-unit-conversion/id1418597453)

Easily convert between various units of measurement with this free utility app. It supports conversions for length, area, volume, mass, time, digital storage, energy, and currency.

**Highlights:** Length conversion, Area conversion, Volume conversion, Mass conversion, Time conversion, Currency conversion

**Features:** macOS Compatibility

**In-app purchases:** none


### Proximity Lock

[App page](https://appshunter.io/ios/app/proximity-lock-smart-autolock/id6760981832)

This app uses your phone's Bluetooth to automatically lock your computer when you walk away. It offers features like a siren alarm for public spaces and remote monitoring of your device's status. Enjoy enhanced data privacy with this efficient security solution.

**Highlights:** Automatic proximity-based computer locking, Smart signal filtering to prevent accidental locks, Work-aware mode that detects active usage, Multi-device pairing for enhanced security, Cafe mode with siren alarm and instant alerts, Remote lock, status monitoring, and activity log

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime Access | $6.99 | one-time |


## Frequently asked questions

### Is All Unit Conversion free?

All Unit Conversion is free to download, with no in-app purchases.

### Is Proximity Lock free?

Proximity Lock is free to download, with in-app purchases available.

### Which has better reviews, All Unit Conversion or Proximity Lock?

Proximity Lock is rated higher. All Unit Conversion averages 4.6 out of 5 from 17 ratings, while Proximity Lock averages 5.0 from 1 ratings.

### Do All Unit Conversion or Proximity Lock have ads?

Neither All Unit Conversion nor Proximity Lock shows ads.

### Which is updated more often, All Unit Conversion or Proximity Lock?

All Unit Conversion ships an update every 2 months, and Proximity Lock every 9 days. Most recently, All Unit Conversion was updated on September 13, 2026 and Proximity Lock on September 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.*