# Conversion vs Just Sensors

The clearest difference is rating: Just Sensors at 5.0 against Conversion's 3.0. Just Sensors also leads on review sentiment (100% vs 61%) and monetization model (free vs paid). On price, ratings volume, ads and in-app purchases there is nothing between them.

Conversion costs $0.99 and Just Sensors $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Just Sensors holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews point the same way: 61% of Conversion's written reviews are positive against 100% of Just Sensors's.

Conversion ships an update every 2 months, Just Sensors every 6 days. The most recent releases landed on October 12, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Conversion | Just Sensors |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | [3.0 (5 ratings)](https://appshunter.io/ios/app/conversion-unit-converter/id286552073/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/just-sensors/id6758069414/reviews)** |
| Number of ratings | **5** | 3 |
| Positive reviews | 61.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Paid | **Free** |
| Best chart rank | — | **#138** |
| Size | 2 MB | 9 MB |
| Requires iOS | 26.0 | **18.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Duncan Campbell](https://appshunter.io/developer/286552076) | [Daniel Smith](https://appshunter.io/developer/1599414012) |

## What reviewers say

### Conversion

[App page](https://appshunter.io/ios/app/conversion-unit-converter/id286552073)

This utility app provides instant conversions between a wide range of units, including metric, imperial, and currency. It features live exchange rates and supports 33 languages, all within a clean, clutter-free interface.

**Highlights:** Extensive unit categories (12 categories, 96 units), Live, offline-capable currency exchange rates, Supports 33 languages and regional number formats, Modern, clutter-free interface with fluid animations, Full VoiceOver and accessibility support, No ads, analytics, or tracking

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

**In-app purchases:** none


### Just Sensors

[App page](https://appshunter.io/ios/app/just-sensors/id6758069414)

**Currently charting:** #138 Top Paid · Utilities (US App Store)

Explore your device's internal sensors with real-time visualizations. Monitor motion, location, audio, light, and device state data. Record and export sensor readings for analysis.

**Highlights:** Visualize 17+ device sensors, Real-time data visualizations, Bluetooth BLE scanner, Record and export sensor data, Device information and settings, Live sensor previews

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

**In-app purchases:** none


## Frequently asked questions

### Is Conversion free?

Conversion costs $0.99, with no in-app purchases.

### Is Just Sensors free?

Just Sensors costs $0.99, with no in-app purchases.

### Which has better reviews, Conversion or Just Sensors?

Just Sensors is rated higher. Conversion averages 3.0 out of 5 from 5 ratings, while Just Sensors averages 5.0 from 3 ratings.

### Do Conversion or Just Sensors have ads?

Neither Conversion nor Just Sensors shows ads.

### Which is updated more often, Conversion or Just Sensors?

Conversion ships an update every 2 months, and Just Sensors every 6 days. Most recently, Conversion was updated on October 12, 2026 and Just Sensors on October 13, 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.*