# Tone Generator! vs SRx Glasses

The clearest difference is price: SRx Glasses at Free against Tone Generator!'s $0.99. SRx Glasses also leads on update cadence (every 12 months vs every 61 months). Tone Generator!'s advantage is iOS requirement (8.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

SRx Glasses is free to download; Tone Generator! costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Tone Generator! ships an update every 61 months, SRx Glasses every 12 months. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Tone Generator! | SRx Glasses |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.7 (23 ratings)](https://appshunter.io/ios/app/tone-generator/id479273838/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 88.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 61 months | **Every 12 months** |
| Monetization | Free | — |
| Size | 5 MB | 25 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Peter Deelstra](https://appshunter.io/developer/400038854) | [Frank Zilic](https://appshunter.io/developer/730931317) |

## What reviewers say

### Tone Generator!

[App page](https://appshunter.io/ios/app/tone-generator/id479273838)

Create and play a wide range of audio tones with adjustable frequencies and waveforms. Generate up to 12 simultaneous tones with individual volume control. Modify tones in real-time for versatile sound generation.

**Highlights:** Generate tones from 20 Hz to 15000 Hz, Adjust tones while playing, Play up to 12 tones simultaneously, Adjust individual tone volumes, Supports sine, square, and triangle waveforms

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

**In-app purchases:** none


### SRx Glasses

[App page](https://appshunter.io/ios/app/srx-glasses/id730931314)

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

**In-app purchases:** none


## Frequently asked questions

### Is Tone Generator! free?

Tone Generator! costs $0.99, with no in-app purchases.

### Is SRx Glasses free?

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

### Do Tone Generator! or SRx Glasses have ads?

Neither Tone Generator! nor SRx Glasses shows ads.

### Which is updated more often, Tone Generator! or SRx Glasses?

Tone Generator! ships an update every 61 months, and SRx Glasses every 12 months. Most recently, Tone Generator! was updated on September 23, 2026 and SRx Glasses on September 10, 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.*