# Barometer ∞ Pressure Altitude vs Relay Shield

The clearest difference is ads: Relay Shield at none against Barometer ∞ Pressure Altitude's shown. Relay Shield also leads on update cadence (every 2 weeks vs every 10 months) and monetization model (free vs ad-supported). On price, rating, in-app purchases and device support there is nothing between them.

Both are free to download. 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 Barometer ∞ Pressure Altitude against 4.9 for Relay Shield. That said, the two scores are not equally well evidenced: Relay Shield has 8 ratings behind it against 1, so its average is the more settled of the two.

Barometer ∞ Pressure Altitude ships an update every 10 months, Relay Shield every 2 weeks. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Barometer ∞ Pressure Altitude | Relay Shield |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/barometer-pressure-altitude/id6740811403/reviews)** | [4.9 (8 ratings)](https://appshunter.io/ios/app/relay-shield-content-blocker/id6771122060/reviews) |
| Number of ratings | 1 | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 2 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 16 MB | 64 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Fawkes Wei](https://appshunter.io/developer/432767536) | [Relay Health Inc](https://appshunter.io/developer/1569873667) |

## What reviewers say

### Barometer ∞ Pressure Altitude

[App page](https://appshunter.io/ios/app/barometer-pressure-altitude/id6740811403)

Access your device's built-in barometer for real-time atmospheric pressure and altitude readings. Offers multiple units and works offline without requiring signup or subscriptions.

**Highlights:** Live barometric pressure readings, Current altitude display, Multiple pressure units (atm, hPa, kPa, Bar), Offline functionality, Native iOS design, Minimalist interface

**In-app purchases:** none


### Relay Shield

[App page](https://appshunter.io/ios/app/relay-shield-content-blocker/id6771122060)

This app helps you block unwanted adult content across your iPhone, including within apps and Safari. It uses on-device detection and Screen Time controls to enforce your chosen boundaries, offering accountability features and personalized reminders.

**Highlights:** On-device content detection, Screen Time integration, App and website protection, Accountability alerts, Personalized reminders, Passcode protection, Quick start from Control Center

**Features:** Safari Extension

**In-app purchases:** none


## Frequently asked questions

### Is Barometer ∞ Pressure Altitude free?

Barometer ∞ Pressure Altitude is free to download, with no in-app purchases.

### Is Relay Shield free?

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

### Which has better reviews, Barometer ∞ Pressure Altitude or Relay Shield?

Barometer ∞ Pressure Altitude is rated higher. Barometer ∞ Pressure Altitude averages 5.0 out of 5 from 1 ratings, while Relay Shield averages 4.9 from 8 ratings.

### Do Barometer ∞ Pressure Altitude or Relay Shield have ads?

Barometer ∞ Pressure Altitude shows ads; Relay Shield does not.

### Which is updated more often, Barometer ∞ Pressure Altitude or Relay Shield?

Barometer ∞ Pressure Altitude ships an update every 10 months, and Relay Shield every 2 weeks. Most recently, Barometer ∞ Pressure Altitude was updated on November 8, 2026 and Relay Shield on November 10, 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.*