# Just Sensors vs Cartogram

The clearest difference is price: Cartogram at Free against Just Sensors's $0.99. Cartogram also leads on iOS requirement (16.0 vs 18.6). Just Sensors's advantage is in-app purchases (none vs 1) and chart position (#174 vs unranked). On ads and device support there is nothing between them.

Cartogram is free to download; Just Sensors costs $0.99 up front. Cartogram sells 1 one-off in-app purchase. Just Sensors asks for nothing beyond the download.

Just Sensors ships an update every 6 days, Cartogram every 2 weeks. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Just Sensors | Cartogram |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/just-sensors/id6758069414/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | Free | — |
| Best chart rank | **#174** | — |
| Size | 9 MB | 10 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Smith](https://appshunter.io/developer/1599414012) | [CENTAUR LABS OU](https://appshunter.io/developer/1790899201) |

## What reviewers say

### Just Sensors

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

**Currently charting:** #174 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


### Cartogram

[App page](https://appshunter.io/ios/app/cartogram/id6760616439)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cartogram Pro | $3.99 | one-time |


## Frequently asked questions

### Is Just Sensors free?

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

### Is Cartogram free?

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

### Do Just Sensors or Cartogram have ads?

Neither Just Sensors nor Cartogram shows ads.

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

Just Sensors ships an update every 6 days, and Cartogram every 2 weeks. Most recently, Just Sensors was updated on October 31, 2026 and Cartogram on November 5, 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.*