# Decibel X vs PostHog Support App

The clearest difference is in-app purchases: PostHog Support App at none against Decibel X's 5. PostHog Support App also leads on iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Decibel X sells 5 in-app purchases, starting at $1.99 per 7 days. PostHog Support App asks for nothing beyond the download.

## The numbers

| Metric | Decibel X | PostHog Support App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (164K ratings)](https://appshunter.io/ios/app/decibel-xdb-sound-level-meter/id448155923/reviews)** | — |
| Number of ratings | **164K** | — |
| Positive reviews | 66.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Freemium | — |
| Size | 90 MB | 26 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SkyPaw Co., Limited](https://appshunter.io/developer/1842040687) | [128 Bit Studios](https://appshunter.io/developer/1896542949) |

## What reviewers say

### Decibel X

[App page](https://appshunter.io/ios/app/decibel-xdb-sound-level-meter/id448155923)

This tool transforms your device into a professional sound level meter, offering precise measurements of ambient noise. It features advanced calibration, frequency analysis, and data management for various applications, from personal curiosity to professional use.

**Highlights:** Pre-calibrated sound pressure level (SPL) measurements, Frequency weighting filters (dBA, dBC, ITU-R 468), Apple Watch and Health App integration, History data management with export options, Dosimeter with NIOSH, OSHA standards, FFT and BAR graphs for real-time frequency analysis, InstaDecibel for sharing dB reports on photos

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Membership | $1.99 | per 7 days |
| Monthly Membership | $5.99 | per month |
| Annual Membership | $49.99 | per year |
| ITU-R 468, A, B, C Weightings | $1.99 | one-time |
| Data Export | $2.99 | one-time |

**What reviewers like**

- ⭐ Excellent app
- 👍 Easy to use and understand
- 🔍 Useful for various applications
- 🎓 Helpful for hearing protection
- 🔧 Accurate and reliable

**What reviewers complain about**

- 💰 Expensive subscription model
- 🔒 Misleading free trial
- 📢 Intrusive ads
- 🤖 Inaccurate readings compared to professional meters
- 🤔 Confusing interface

**Reported bugs**

- App crashes when deleting recordings
- Microphone issues on certain devices
- Saved files not accessible after updates

**Requested features**

- Add GPS coordinates to recordings
- Improve reporting and data export
- Provide more weighting options
- Extend frequency range
- Allow music playback while using the app


### PostHog Support App

[App page](https://appshunter.io/ios/app/posthog-support-app/id6794083626)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel X free?

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

### Is PostHog Support App free?

PostHog Support App is free to download, with no in-app purchases.

### Do Decibel X or PostHog Support App have ads?

Neither Decibel X nor PostHog Support App shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*