# Barometer & Altimeter vs CellMonitor

The clearest difference is price: Barometer & Altimeter at Free against CellMonitor's $0.99. Barometer & Altimeter also leads on update cadence (every 3 weeks vs every 2 months). On review sentiment, ads, in-app purchases and device support there is nothing between them.

Barometer & Altimeter is free to download; CellMonitor costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Barometer & Altimeter ships an update every 3 weeks, CellMonitor every 2 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Barometer & Altimeter | CellMonitor |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[2.6 (28 ratings)](https://appshunter.io/ios/app/barometer-and-altimeter-howhigh/id921339656/reviews)** | — |
| Number of ratings | **28** | — |
| Positive reviews | **57.1% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | **Free** | Paid |
| Size | 9 MB | 2 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Thirty Seven Inc.](https://appshunter.io/developer/554594255) | [VOJTECH VOLPRECHT](https://appshunter.io/developer/1884130685) |

## What reviewers say

### Barometer & Altimeter

[App page](https://appshunter.io/ios/app/barometer-and-altimeter-howhigh/id921339656)

This app provides precise barometer and altimeter readings with live data, session recording, and historical analysis. It features automatic device calibration and supports various Apple devices and accessibility features.

**Highlights:** Dual barometer and altimeter dashboards, Real-time pressure and elevation readings, Session recording with rich datasets, Interactive Swift Charts for analysis, Automatic device calibration, Optional WeatherKit sea-level calibration

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### CellMonitor

[App page](https://appshunter.io/ios/app/cellmonitor/id6760365267)

Track cellular and WiFi data usage in real-time on your device. Monitor multiple SIM cards independently, view usage at a glance, and test network speeds. Export detailed reports and receive threshold alerts to avoid overage charges.

**Highlights:** Real-time data tracking, Dual-SIM and eSIM support, Smart usage dashboard, Integrated speed test, Exportable usage reports, Customizable threshold alerts, Apple Watch companion app

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Barometer & Altimeter free?

Barometer & Altimeter is free to download, with no in-app purchases.

### Is CellMonitor free?

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

### Do Barometer & Altimeter or CellMonitor have ads?

Neither Barometer & Altimeter nor CellMonitor shows ads.

### Which is updated more often, Barometer & Altimeter or CellMonitor?

Barometer & Altimeter ships an update every 3 weeks, and CellMonitor every 2 months. Most recently, Barometer & Altimeter was updated on October 24, 2026 and CellMonitor on October 9, 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.*