# ProJammer vs Audio Spectrum Analyzer dB RTA

The clearest difference is rating: Audio Spectrum Analyzer dB RTA at 4.5 against ProJammer's 3.9. Audio Spectrum Analyzer dB RTA also leads on ratings volume (3K vs 7). ProJammer's advantage is review sentiment (77% vs 44%) and update cadence (every 2 weeks vs every 5 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. ProJammer sells 10 one-off in-app purchases and Audio Spectrum Analyzer dB RTA sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Audio Spectrum Analyzer dB RTA holds the better App Store score, 4.5 against 3.9. That said, the two scores are not equally well evidenced: Audio Spectrum Analyzer dB RTA has 3K ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 77% of ProJammer's written reviews are positive against 44% of Audio Spectrum Analyzer dB RTA's, so the app with the better star average is not the one people write more warmly about.

ProJammer ships an update every 2 weeks, Audio Spectrum Analyzer dB RTA every 5 months. The most recent releases landed on October 20, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | ProJammer | Audio Spectrum Analyzer dB RTA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (7 ratings)](https://appshunter.io/ios/app/projammer/id1161961316/reviews) | **[4.5 (3K ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer-db-rta/id1281873790/reviews)** |
| Number of ratings | 7 | **3K** |
| Positive reviews | **76.9% of reviews** | 43.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 34 MB | 24 MB |
| Requires iOS | **8.0** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Paper Knife Mobile LLC](https://appshunter.io/developer/527462845) | [Marina Polyanskaya](https://appshunter.io/developer/1519482916) |

## What reviewers say

### ProJammer

[App page](https://appshunter.io/ios/app/projammer/id1161961316)

Learn drumming skills with multi-track original music and transcriptions. Practice at your own pace, adjust loop speed, and mute instruments to create a personalized learning experience. Improvise or play along to become a better drummer.

**Highlights:** Multi-track original music, Drum transcriptions, Adjustable loop speed, Instrument muting, Built-in metronome, Looping practice

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Strolling Bones | $0.99 | one-time |
| U Funky | $0.99 | one-time |
| Praise Rock | $0.99 | one-time |
| Trappist EDM | $0.99 | one-time |
| Covered Wagon | $0.99 | one-time |
| Rock Loops 01 | $1.99 | one-time |
| Funk Loops 01 | $1.99 | one-time |
| Blues Loops 01 | $1.99 | one-time |
| Latin Loops 01 | $1.99 | one-time |
| World Loops 01 | $1.99 | one-time |


### Audio Spectrum Analyzer dB RTA

[App page](https://appshunter.io/ios/app/audio-spectrum-analyzer-db-rta/id1281873790)

Analyze sound frequencies and decibel levels with this advanced tool. Ideal for tuning audio systems, it offers real-time spectrum analysis and sound metering for various applications.

**Highlights:** Octave Band Real-Time Analyzer, FFT Plot - Fast Fourier Transform, Integrated Sound Level Meter (dB-A), Multispectral Harmonic Analyzer, Hold Max and Min Peaks, Various Window Functions

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $1.99 | per month |
| Spectrum Analyzer Pro | $7.99 | one-time |

**What reviewers like**

- 🚀 Excellent audio analysis tool
- 👍 Clean and intuitive interface
- 💡 Customizable frequency range
- 🔍 Accurate real-time spectrum visualization

**What reviewers complain about**

- 🐛 Compatibility issues with newer iOS versions
- 🔁 Constant prompts to upgrade to Pro version
- 🔌 High battery consumption
- 📊 Inaccurate frequency tracking in some modes

**Reported bugs**

- Freezing and crashing on certain devices
- Incorrect frequency readings in Octave RTA mode
- Inability to switch between microphone sources

**Requested features**

- External microphone support
- Ability to save and compare measurement results
- More detailed instructions and tutorials
- Vertical orientation option


## Frequently asked questions

### Is ProJammer free?

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

### Is Audio Spectrum Analyzer dB RTA free?

Audio Spectrum Analyzer dB RTA is free to download, with in-app purchases available.

### Which has better reviews, ProJammer or Audio Spectrum Analyzer dB RTA?

Audio Spectrum Analyzer dB RTA is rated higher. ProJammer averages 3.9 out of 5 from 7 ratings, while Audio Spectrum Analyzer dB RTA averages 4.5 from 3K ratings.

### Do ProJammer or Audio Spectrum Analyzer dB RTA have ads?

Neither ProJammer nor Audio Spectrum Analyzer dB RTA shows ads.

### Which is updated more often, ProJammer or Audio Spectrum Analyzer dB RTA?

ProJammer ships an update every 2 weeks, and Audio Spectrum Analyzer dB RTA every 5 months. Most recently, ProJammer was updated on October 20, 2026 and Audio Spectrum Analyzer dB RTA on October 22, 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.*