# PDF Scanner vs Barometer & Altimeter Pro

The clearest difference is ads: Barometer & Altimeter Pro at none against PDF Scanner's shown. Barometer & Altimeter Pro also leads on update cadence (every 10 days vs every 9 months). PDF Scanner's advantage is iOS requirement (15.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. PDF Scanner sells 3 in-app purchases, starting at $3.99 per 7 days and Barometer & Altimeter Pro sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

PDF Scanner ships an update every 9 months, Barometer & Altimeter Pro every 10 days. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PDF Scanner | Barometer & Altimeter Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.5 (13 ratings)](https://appshunter.io/ios/app/barometer-and-altimeter-pro/id6762895694/reviews)** |
| Number of ratings | — | **13** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 10 days** |
| Monetization | — | Free |
| Size | 37 MB | 37 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Raheel Shareef](https://appshunter.io/developer/1707591149) | [Tirin](https://appshunter.io/developer/1665717789) |

## What reviewers say

### PDF Scanner

[App page](https://appshunter.io/ios/app/pdf-scanner-edit-scanner-app/id6466659435)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Ads free inapps | $3.99 | per 7 days |
| Monthly Ads free | $7.99 | per month |
| Lifetime Ads Free | $14.99 | one-time |


### Barometer & Altimeter Pro

[App page](https://appshunter.io/ios/app/barometer-and-altimeter-pro/id6762895694)

This application precisely measures atmospheric pressure and tracks your elevation in real time. It provides storm warnings based on pressure changes and displays historical trend charts. Ideal for outdoor enthusiasts and weather-conscious individuals.

**Highlights:** Precise air pressure measurement, Live elevation tracking, Trip gain calculation, Storm warning alerts, Historical trend charts, Customizable interface

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Barometer Monthly | $1.99 | per month |
| Barometer Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is PDF Scanner free?

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

### Is Barometer & Altimeter Pro free?

Barometer & Altimeter Pro is free to download, with in-app purchases available.

### Do PDF Scanner or Barometer & Altimeter Pro have ads?

PDF Scanner shows ads; Barometer & Altimeter Pro does not.

### Which is updated more often, PDF Scanner or Barometer & Altimeter Pro?

PDF Scanner ships an update every 9 months, and Barometer & Altimeter Pro every 10 days. Most recently, PDF Scanner was updated on October 27, 2026 and Barometer & Altimeter Pro on October 31, 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.*