# Audio Function Generator PRO vs hapjam

The clearest difference is price: hapjam at Free against Audio Function Generator PRO's $9.99. hapjam also leads on rating (5.0 vs 4.8). Audio Function Generator PRO's advantage is ratings volume (269 vs 4). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

hapjam is free to download; Audio Function Generator PRO costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

hapjam holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Audio Function Generator PRO has 269 ratings behind it against 4, so its average is the more settled of the two.

Audio Function Generator PRO ships an update every 6 weeks, hapjam every 3 weeks. Both last shipped on October 29, 2026.

## The numbers

| Metric | Audio Function Generator PRO | hapjam |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [4.8 (269 ratings)](https://appshunter.io/ios/app/audio-function-generator-pro/id895074703/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/hapjam/id6799201363/reviews)** |
| Number of ratings | **269** | 4 |
| Positive reviews | 87.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 13 MB | 5 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [hapjam](https://appshunter.io/developer/6799201365) |

## What reviewers say

### Audio Function Generator PRO

[App page](https://appshunter.io/ios/app/audio-function-generator-pro/id895074703)

Generate various audio test tones, including sine, square, and sawtooth waves. Explore frequency and volume sweeps, custom presets, and different types of noise. Advanced settings allow for fine-tuning signal parameters and creating complex multi-tone sequences.

**Highlights:** Generate sine, square, triangular, and sawtooth tones, Frequency and volume sweep generation, Customizable presets and configurations, Multiple noise types (White, Pink, Violet, etc.), Advanced signal parameter control, Multi-tone and dual function generation

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

**In-app purchases:** none

**What reviewers like**

- ✨ Superb craftsmanship and work
- 🚀 Excellent performance on older devices
- 💡 History feature is a great addition
- 👍 Versatile and powerful app
- 🎶 Great for binaural beats and sound creation

**What reviewers complain about**

- 📉 Linear sweep is useless
- ❓ Missing PWM functionality
- ❓ Missing Terzrauschen (third-octave noise)
- 🐛 Volume button issues
- 🐛 GUI is bad

**Reported bugs**

- Volume button issues (jumps up and down, displays wrong level)
- Update crashes on iPad Air2 when changing screens
- App opens AppStore repeatedly after purchase
- Buttons don't respond, settings don't keep
- Frequencies stick, program is useless

**Requested features**

- Logarithmic sweeps and frequency slider scale
- PWM functionality
- Terzrauschen (third-octave noise)
- Ping-pong sweeps in Multitone windows
- Sweeping of noise/adding noise in Multitone sweep with sweeping bandpass filter


### hapjam

[App page](https://appshunter.io/ios/app/hapjam/id6799201363)

Discover live music happening near you, from bars and breweries to patios and wineries. See who's playing now and tonight, filter by vibe, and get real-time updates on schedules and set times.

**Highlights:** Real-time venue schedules, Discover local performers, Filter venues by vibe, Follow favorite bands/venues, Customizable vibe searches, Get venue set times and directions

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

**In-app purchases:** none


## Frequently asked questions

### Is Audio Function Generator PRO free?

Audio Function Generator PRO costs $9.99, with no in-app purchases.

### Is hapjam free?

hapjam is free to download, with no in-app purchases.

### Which has better reviews, Audio Function Generator PRO or hapjam?

hapjam is rated higher. Audio Function Generator PRO averages 4.8 out of 5 from 269 ratings, while hapjam averages 5.0 from 4 ratings.

### Do Audio Function Generator PRO or hapjam have ads?

Neither Audio Function Generator PRO nor hapjam shows ads.

### Which is updated more often, Audio Function Generator PRO or hapjam?

Audio Function Generator PRO ships an update every 6 weeks, and hapjam every 3 weeks. Most recently, Audio Function Generator PRO was updated on October 29, 2026 and hapjam on October 29, 2026.

---

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