# SPL Graph vs Audio Unit Player

The clearest difference is price: Audio Unit Player at Free against SPL Graph's $9.99. Audio Unit Player also leads on update cadence (every 2 weeks vs every 6 months) and ratings volume (30 vs 3). SPL Graph's advantage is ads (none vs shown) and iOS requirement (15.0 vs 17.0). On rating, review sentiment, in-app purchases and monetization model there is nothing between them.

Audio Unit Player is free to download; SPL Graph costs $9.99 up front. SPL Graph sells 5 in-app purchases, starting at $19.99 per month and Audio Unit Player sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Audio Unit Player holds the better App Store score, 3.9 against 3.7. That said, the two scores are not equally well evidenced: Audio Unit Player has 30 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 64% of SPL Graph's written reviews are positive against 67% of Audio Unit Player's.

SPL Graph ships an update every 6 months, Audio Unit Player every 2 weeks. The most recent releases landed on September 16, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | SPL Graph | Audio Unit Player |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/spl-graph/id307451201/reviews) | **[3.9 (30 ratings)](https://appshunter.io/ios/app/audio-unit-player/id734191615/reviews)** |
| Number of ratings | 3 | **30** |
| Positive reviews | 64.3% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Monetization | Paid | Paid |
| Size | 30 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Smith](https://appshunter.io/developer/291822462) | [Loop-Sessions.LLC.](https://appshunter.io/developer/414215366) |

## 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 |


### Audio Unit Player

[App page](https://appshunter.io/ios/app/audio-unit-player/id734191615)

This music player offers real-time audio processing, including time stretching, pitch shifting, and a 31-band equalizer. It supports AUv3 effects and allows for A-B loop playback, making it ideal for practice, transcription, and performance adjustments.

**Highlights:** Real-time time stretch (50-200%), Real-time pitch shift (-12 to +12 semitones), 31-band equalizer with presets, AUv3 effects support, A-B loop playback, Background playback, Audio file export

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Always remove banner ads. | $3.99 | one-time |


## Frequently asked questions

### Is SPL Graph free?

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

### Is Audio Unit Player free?

Audio Unit Player is free to download, with in-app purchases available.

### Which has better reviews, SPL Graph or Audio Unit Player?

Audio Unit Player is rated higher. SPL Graph averages 3.7 out of 5 from 3 ratings, while Audio Unit Player averages 3.9 from 30 ratings.

### Do SPL Graph or Audio Unit Player have ads?

Audio Unit Player shows ads; SPL Graph does not.

### Which is updated more often, SPL Graph or Audio Unit Player?

SPL Graph ships an update every 6 months, and Audio Unit Player every 2 weeks. Most recently, SPL Graph was updated on September 16, 2026 and Audio Unit Player on October 1, 2026.

---

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