# TripSync Pro vs Sound Level · Baro

The clearest difference is in-app purchases: Sound Level · Baro at none against TripSync Pro's 3. Sound Level · Baro also leads on iOS requirement (13.0 vs 17). On price, ads and device support there is nothing between them.

Both are free to download. TripSync Pro sells 3 in-app purchases, starting at $2.99 per month. Sound Level · Baro asks for nothing beyond the download.

## The numbers

| Metric | TripSync Pro | Sound Level · Baro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/sound-level-baro/id6779881299/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 3 days |
| Monetization | — | Free |
| Size | 2 MB | 23 MB |
| Requires iOS | 17 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [贺 周](https://appshunter.io/developer/1815397078) | [Euiseok Kim](https://appshunter.io/developer/1879633122) |

## What reviewers say

### TripSync Pro

[App page](https://appshunter.io/ios/app/tripsync-pro/id6763983850)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TripSync Pro Monthly | $2.99 | per month |
| TripSync Pro Yearly | $19.99 | per year |
| TripSync Pro Lifetime | $49.99 | one-time |


### Sound Level · Baro

[App page](https://appshunter.io/ios/app/sound-level-baro/id6779881299)

This app measures ambient sound levels in decibels, displaying them in a large, easy-to-read format with color-coded zones for hearing safety. It operates entirely offline and prioritizes user privacy by processing all audio data on the device without recording or uploading anything.

**Highlights:** Live dB readout, Color-coded hearing safety zones, Session min, average, and max, Built-in calibration, Large, readable display, Offline operation, Privacy-focused design

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

**In-app purchases:** none


## Frequently asked questions

### Is TripSync Pro free?

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

### Is Sound Level · Baro free?

Sound Level · Baro is free to download, with no in-app purchases.

### Do TripSync Pro or Sound Level · Baro have ads?

Neither TripSync Pro nor Sound Level · Baro shows ads.

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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.*