Tone Generator! vs SRx Glasses
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tone Generator!
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.
- 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
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A flexible tone generator. - Generate tones between 20 Hz and 15000 Hz in 0.1 Hz increments - Adjust tones while they are playing - Play up to 12 different tones simultaneously and adjust volumes of individual tones - Supports sine, square, and triangle waveforms
SRx Glasses
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This time saving app was designed for anyone who organises safety prescription glasses to their workforce or requires safety glasses for yourselves. The app is the simplest way of providing optical dispensing information for the purpose of obtaining safety prescription glasses. It eliminates downtime and expedite supply just choose your desired frame and tint, take two photos, choose a lens type and press SEND & SAVE. Details will go to TwinShields for reply within 24 hours. All Information kept confidential.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Tone Generator! | SRx Glasses |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.7 (23 ratings) — better | — |
| Positive reviews | 88.1% of reviews | — |
| Number of ratings | 23 — better | — |
| Update frequency | Every 61 months | Every 12 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 5 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Peter Deelstra | Frank Zilic |
In-app purchases
Tone Generator!
No in-app purchases
SRx Glasses
No in-app purchases
Questions
Is Tone Generator! free?
Is SRx Glasses free?
Do Tone Generator! or SRx Glasses have ads?
Which is updated more often, Tone Generator! or SRx Glasses?
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