# SPL Graph vs Ultrasonic Analyzer

The clearest difference is price: SPL Graph at $9.99 against Ultrasonic Analyzer's $19.99. SPL Graph also leads on review sentiment (64% vs 56%). Ultrasonic Analyzer's advantage is in-app purchases (none vs 5) and rating (3.9 vs 3.7). On update cadence, ads, monetization model and device support there is nothing between them.

SPL Graph costs $9.99 and Ultrasonic Analyzer $19.99 up front. SPL Graph sells 5 in-app purchases, starting at $19.99 per month. Ultrasonic Analyzer asks for nothing beyond the download.

Ultrasonic Analyzer holds the better App Store score, 3.9 against 3.7. That said, the two scores are not equally well evidenced: Ultrasonic Analyzer has 35 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 64% of SPL Graph's written reviews are positive against 56% of Ultrasonic Analyzer'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, Ultrasonic Analyzer every 4 months. Both last shipped on October 23, 2026.

## The numbers

| Metric | SPL Graph | Ultrasonic Analyzer |
| --- | --- | --- |
| Price | **$9.99** | $19.99 |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/spl-graph/id307451201/reviews) | **[3.9 (35 ratings)](https://appshunter.io/ios/app/ultrasonic-analyzer/id851069926/reviews)** |
| Number of ratings | 3 | **35** |
| Positive reviews | **64.3% of reviews** | 55.9% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Paid | Paid |
| Size | 30 MB | 2 MB |
| Requires iOS | 15.0 | **12.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Smith](https://appshunter.io/developer/291822462) | [DEXUS Pawel Krzywdzinski](https://appshunter.io/developer/377798036) |

## 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 |


### Ultrasonic Analyzer

[App page](https://appshunter.io/ios/app/ultrasonic-analyzer/id851069926)

This app provides real-time audio analysis with visual representations of sound frequencies. It allows users to listen to and analyze ultrasounds, with options for transposed playback and slowed-down analysis of inaudible sounds. It supports various sampling rates and offers detailed charting and measurement tools.

**Highlights:** Real-time spectrum analysis, Spectrogram and oscilloscope views, Octave RTA analyzer, Transposed ultrasound listening, Slowed-down playback, High sampling rates up to 384kHz, Zoom and pan capabilities

**In-app purchases:** none


## Frequently asked questions

### Is SPL Graph free?

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

### Is Ultrasonic Analyzer free?

Ultrasonic Analyzer costs $19.99, with no in-app purchases.

### Which has better reviews, SPL Graph or Ultrasonic Analyzer?

Ultrasonic Analyzer is rated higher. SPL Graph averages 3.7 out of 5 from 3 ratings, while Ultrasonic Analyzer averages 3.9 from 35 ratings.

### Do SPL Graph or Ultrasonic Analyzer have ads?

Neither SPL Graph nor Ultrasonic Analyzer shows ads.

### Which is updated more often, SPL Graph or Ultrasonic Analyzer?

SPL Graph ships an update every 6 months, and Ultrasonic Analyzer every 4 months. Most recently, SPL Graph was updated on October 23, 2026 and Ultrasonic Analyzer on October 23, 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.*