# SPL Graph vs SoundBase ° Music Hearmark

The clearest difference is price: SoundBase ° Music Hearmark at Free against SPL Graph's $9.99. SoundBase ° Music Hearmark also leads on rating (4.6 vs 3.7) and review sentiment (100% vs 64%). SPL Graph's advantage is ads (none vs shown). On device support and iOS requirement there is nothing between them.

SoundBase ° Music Hearmark is free to download; SPL Graph costs $9.99 up front. SPL Graph sells 5 in-app purchases, starting at $19.99 per month. SoundBase ° Music Hearmark asks for nothing beyond the download.

SoundBase ° Music Hearmark holds the better App Store score, 4.6 against 3.7. Both are backed by a comparable volume of ratings — 3 and 12 respectively. Written reviews point the same way: 64% of SPL Graph's written reviews are positive against 100% of SoundBase ° Music Hearmark's.

SPL Graph ships an update every 6 months, SoundBase ° Music Hearmark weekly. The most recent releases landed on November 10, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | SPL Graph | SoundBase ° Music Hearmark |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/spl-graph/id307451201/reviews) | **[4.6 (12 ratings)](https://appshunter.io/ios/app/soundbase-music-hearmark/id6744902626/reviews)** |
| Number of ratings | 3 | **12** |
| Positive reviews | 64.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | Paid | **Ad-supported** |
| Size | 30 MB | 242 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Andrew Smith](https://appshunter.io/developer/291822462) | [SWEET PEA THREAD COMPANY LIMITED](https://appshunter.io/developer/1764402323) |

## What reviewers say

### SPL Graph

[App page](https://appshunter.io/ios/app/spl-graph/id307451201)

This app analyzes sound pressure levels and environmental noise in real-time. It logs audio, captures video, and performs frequency analysis, with options for advanced octave band analysis and professional microphone integration. Receive email notifications for exceeding noise limits and auto-save data for continuous monitoring.

**Highlights:** Real-time sound pressure level analysis, Audio recording and playback, Optional video capture, Octave and 1/3 octave band analysis, 3D frequency plot, Ln SPL value calculation, Email notifications for noise limits

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remote Noise Monitoring | $19.99 | per month |
| Remote Noise Mid Level | $79.99 | per month |
| Remote Noise Large | $149.99 | per month |
| Octave Band SPL Logging | $9.99 | one-time |
| Video Capture Option | $19.99 | one-time |


### SoundBase ° Music Hearmark

[App page](https://appshunter.io/ios/app/soundbase-music-hearmark/id6744902626)

This app offers a comprehensive audio experience, combining music streaming with advanced track customization, global radio access, and tools for relaxation and music practice. It includes features like stem control, EQ, a tuner, and a metronome.

**Highlights:** Music streaming with stem control, Advanced EQ and track adjustments, Global AM/FM radio streaming, White noise and soundscapes for relaxation, Musician tools: tuner, metronome, chord finder, Water eject feature for speakers

**In-app purchases:** none


## Frequently asked questions

### Is SPL Graph free?

SPL Graph costs $9.99, and also offers in-app purchases.

### Is SoundBase ° Music Hearmark free?

SoundBase ° Music Hearmark is free to download, with no in-app purchases.

### Which has better reviews, SPL Graph or SoundBase ° Music Hearmark?

SoundBase ° Music Hearmark is rated higher. SPL Graph averages 3.7 out of 5 from 3 ratings, while SoundBase ° Music Hearmark averages 4.6 from 12 ratings.

### Do SPL Graph or SoundBase ° Music Hearmark have ads?

SoundBase ° Music Hearmark shows ads; SPL Graph does not.

### Which is updated more often, SPL Graph or SoundBase ° Music Hearmark?

SPL Graph ships an update every 6 months, and SoundBase ° Music Hearmark weekly. Most recently, SPL Graph was updated on November 10, 2026 and SoundBase ° Music Hearmark on October 30, 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.*