# SPL Graph vs Midiflow Limiter (Audiobus)

The clearest difference is review sentiment: SPL Graph at 64% against Midiflow Limiter (Audiobus)'s 0%. Midiflow Limiter (Audiobus)'s advantage is rating (4.5 vs 3.7) and price ($1.99 vs $9.99). On ratings volume, update cadence, ads and monetization model there is nothing between them.

SPL Graph costs $9.99 and Midiflow Limiter (Audiobus) $1.99 up front. SPL Graph sells 5 in-app purchases, starting at $19.99 per month. Midiflow Limiter (Audiobus) asks for nothing beyond the download.

Midiflow Limiter (Audiobus) holds the better App Store score, 4.5 against 3.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews complicate that: 64% of SPL Graph's written reviews are positive against 0% of Midiflow Limiter (Audiobus)'s, so the app with the better star average is not the one people write more warmly about.

SPL Graph ships an update every 6 months, Midiflow Limiter (Audiobus) every 11 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SPL Graph | Midiflow Limiter (Audiobus) |
| --- | --- | --- |
| Price | $9.99 | **$1.99** |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/spl-graph/id307451201/reviews) | **[4.5 (2 ratings)](https://appshunter.io/ios/app/midiflow-limiter-audiobus/id1107244412/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | **64.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 11 months |
| Monetization | Paid | Paid |
| Size | 30 MB | 5 MB |
| Requires iOS | 15.0 | **10.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Smith](https://appshunter.io/developer/291822462) | [Johannes Doerr](https://appshunter.io/developer/622204117) |

## 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 |


### Midiflow Limiter (Audiobus)

[App page](https://appshunter.io/ios/app/midiflow-limiter-audiobus/id1107244412)

This MIDI effect app allows you to filter and remap note velocities for Audiobus 3. You can set specific velocity ranges to filter out notes or use a curve to remap them to different values, enabling the creation of velocity layers for dynamic sound triggering.

**Highlights:** Filter notes by velocity range, Remap velocities with a curve, Remap to a fixed velocity, Create velocity layers, Use multiple instances in Audiobus 3

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

**In-app purchases:** none


## Frequently asked questions

### Is SPL Graph free?

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

### Is Midiflow Limiter (Audiobus) free?

Midiflow Limiter (Audiobus) costs $1.99, with no in-app purchases.

### Which has better reviews, SPL Graph or Midiflow Limiter (Audiobus)?

Midiflow Limiter (Audiobus) is rated higher. SPL Graph averages 3.7 out of 5 from 3 ratings, while Midiflow Limiter (Audiobus) averages 4.5 from 2 ratings.

### Do SPL Graph or Midiflow Limiter (Audiobus) have ads?

Neither SPL Graph nor Midiflow Limiter (Audiobus) shows ads.

### Which is updated more often, SPL Graph or Midiflow Limiter (Audiobus)?

SPL Graph ships an update every 6 months, and Midiflow Limiter (Audiobus) every 11 months. Most recently, SPL Graph was updated on October 23, 2026 and Midiflow Limiter (Audiobus) on October 24, 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.*