# Tone Generator Professional vs e

The clearest difference is price: e at Free against Tone Generator Professional's $14.99. e also leads on in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

e is free to download; Tone Generator Professional costs $14.99 up front. Tone Generator Professional sells 1 one-off in-app purchase. e asks for nothing beyond the download.

Tone Generator Professional ships an update every 5 months, e every 2 months. The most recent releases landed on October 9, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Tone Generator Professional | e |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | **[4.7 (9 ratings)](https://appshunter.io/ios/app/tone-generator-professional/id1428334527/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 11 MB | 23 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pedro Daniel Macalupu Cumpen](https://appshunter.io/developer/492172409) | [Erda](https://appshunter.io/developer/1587686032) |

## What reviewers say

### Tone Generator Professional

[App page](https://appshunter.io/ios/app/tone-generator-professional/id1428334527)

Create precise audio tones from 20Hz to 20,000Hz using four distinct waveforms. Adjust output volume and enjoy instant loading with a highly accurate algorithm. This universal app is compatible with external speakers and all iOS devices.

**Highlights:** Generate tones from 20Hz to 20,000Hz, Sine, Square, Triangle, and Sawtooth waveforms, Adjustable output volume, Instant load and precise algorithm, Compatible with external speakers, Universal app for iPhone, iPad, and iPod touch

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


### e

[App page](https://appshunter.io/ios/app/e-tuner/id1587686030)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tone Generator Professional free?

Tone Generator Professional costs $14.99, and also offers in-app purchases.

### Is e free?

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

### Do Tone Generator Professional or e have ads?

Tone Generator Professional shows ads; e does not.

### Which is updated more often, Tone Generator Professional or e?

Tone Generator Professional ships an update every 5 months, and e every 2 months. Most recently, Tone Generator Professional was updated on October 9, 2026 and e on September 29, 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.*