# Audio Function Generator vs Speaker Box Lite

The clearest difference is rating: Audio Function Generator at 4.7 against Speaker Box Lite's 4.1. Audio Function Generator also leads on ads (none vs shown) and review sentiment (77% vs 62%). Speaker Box Lite's advantage is update cadence (every 11 days vs every 6 weeks). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Audio Function Generator sells 1 one-off in-app purchase and Speaker Box Lite sells 3 in-app purchases, starting at $4.49 per 7 days. Whichever you choose, the download price is not the number that matters.

Audio Function Generator holds the better App Store score, 4.7 against 4.1. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 339, so its average is the more settled of the two. Written reviews point the same way: 77% of Audio Function Generator's written reviews are positive against 62% of Speaker Box Lite's.

Audio Function Generator ships an update every 6 weeks, Speaker Box Lite every 11 days. The most recent releases landed on September 24, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | Speaker Box Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | [4.1 (339 ratings)](https://appshunter.io/ios/app/speaker-box-lite/id898625526/reviews) |
| Number of ratings | **2.2K** | 339 |
| Positive reviews | **77.1% of reviews** | 61.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 11 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 14 MB | 160 MB |
| Requires iOS | 15.5 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Alexey Abdulin](https://appshunter.io/developer/893545070) |

## What reviewers say

### Audio Function Generator

[App page](https://appshunter.io/ios/app/audio-function-generator/id768229610)

Generate various audio test tones, including sine, square, triangle, and sawtooth waves. Explore frequency and volume sweeps, noise generation, and custom preset creation. Advanced features like extended frequency ranges and multi-tone playback are available with an upgrade.

**Highlights:** Generate sine, square, triangle, and sawtooth tones, Frequency and volume sweep generation, Noise generation (white, pink, violet, etc.), Custom preset creation and saving, Extended frequency range (PRO feature), Multi-tone playback (PRO feature)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to PRO | $9.99 | one-time |

**What reviewers like**

- 👍 Great app
- 🎶 Helps with Tinnitus
- 💯 Best app I've paid for
- 🔍 Highly recommended
- 🎨 Attention to detail

**What reviewers complain about**

- 🐛 Crashes
- 💰 Deceptive/Money hungry
- 🔒 Basic features paywalled
- 🔒 Limited without paying
- 🔒 Removed functionality to push paid version

**Reported bugs**

- Crashes on launch
- Volume slider issues
- Airplay not working
- Sound distortion when display is active

**Requested features**

- Add download/save feature for custom sounds
- Improve sweep function (continuous mode, better frequency control)
- Add more multi-frequency rows
- Implement 432Hz base frequency option
- Add phase control for noise generators


### Speaker Box Lite

[App page](https://appshunter.io/ios/app/speaker-box-lite/id898625526)

Calculate subwoofer box volumes and design acoustic systems with detailed charts and parameter generation. Supports various enclosure types and includes a shared online speaker database. Offers cloud project saving and PRO features via subscription.

**Highlights:** Subwoofer box volume calculation, Support for multiple enclosure types, Amplitude, phase, and SPL charts, Parameter generation for vented boxes, Port and displacement volume calculation, Cloud project saving, Shared online speaker database

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week PRO | $4.49 | per 7 days |
| Month plan | $7.99 | per month |
| PRO Account | $8.99 | per month |

**What reviewers like**

- 📊 Comprehensive graphing and visualization tools
- 💾 Extensive speaker driver database with TS parameters
- 📐 Accurate enclosure calculations for sealed and ported boxes
- ✂️ Automatic cut list generation for DIY building
- 💡 Intuitive interface for beginners and experts

**What reviewers complain about**

- 💰 Expensive subscription model ($5-7/month or 400 rubles)
- 🚫 Limited free version functionality
- 🐛 Frequent crashes and stability issues
- ❌ Inconsistent calculation accuracy
- 🔐 Billing/subscription verification problems

**Reported bugs**

- App crashes when adjusting VB/FB parameters
- Crashes on certain parameter combinations requiring reinstall
- Drawing/3D model generation hangs indefinitely
- Subscription payment charged multiple times
- Pro version access denied despite active payment

**Requested features**

- One-time purchase option instead of subscription
- Portuguese language support (PT-BR)
- Air velocity graphs
- Complete 3D model generation with final drawings
- Bandpass 4th order enclosure support


## Frequently asked questions

### Is Audio Function Generator free?

Audio Function Generator is free to download, with in-app purchases available.

### Is Speaker Box Lite free?

Speaker Box Lite is free to download, with in-app purchases available.

### Which has better reviews, Audio Function Generator or Speaker Box Lite?

Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Speaker Box Lite averages 4.1 from 339 ratings.

### Do Audio Function Generator or Speaker Box Lite have ads?

Speaker Box Lite shows ads; Audio Function Generator does not.

### Which is updated more often, Audio Function Generator or Speaker Box Lite?

Audio Function Generator ships an update every 6 weeks, and Speaker Box Lite every 11 days. Most recently, Audio Function Generator was updated on September 24, 2026 and Speaker Box Lite on September 18, 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.*