Diapason Audio Generator vs MailMyHtml
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Diapason Audio Generator
Generate various audio test tones, including sine waves, noise, and more. Combine up to four independent sources with phase control for each speaker. Monitor waveforms and output power with clipping indication.
- Multiple test tone types (sine, square, triangle, sawtooth, noise)
- Combine up to 4 independent audio sources
- Phase switch for each speaker channel
- Frequency sweeping and musical scale alignment
- Narrow band noise generation
- Waveform viewer
- RMS power and clipping indication
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This App is a powerful test tone generator. Yet it is extremely simple to use. No other audio generator App is as complete as this one whatever its price ! You can combine (add) up to 4 independent sources and send the result to left and/or right speaker. There is a phase switch for each channel. Available test tone types are: sine wave, square, triangle, saw tooth, white noise, pink noise. As you can see on sample images, first source is very basic and thus very easy to use. Second source is more complex and allows sweeping of frequency for sine waves. Third source is quite similar to the previous one except that frequencies are aligned with a musical scale (reference is 440Hz). Fourth source is for narrow band noise. Rotating knobs are there to ease frequency selection. The display at bottom of first tab is a rough waveform viewer, to monitor the generated signal. The output RMS power of a channel is indicated. Clipping is indicated as well should it occur (sources are added). Any comment, any feedback ? There is a blog for this. Note that the built-in speaker cannot reproduce the highest and lowest frequencies (below 400 and above 11000Hz to give an idea). You will ear these frequencies only with a good headphone or HiFi system.
MailMyHtml
Easily send emails with custom HTML designs directly from your mobile device. Import HTML files from cloud storage or write and preview your own code within the app.
- Send emails with HTML content
- Import HTML files from Dropbox
- Write and preview HTML code
- Responsive email design support
- Directly embed HTML in email body
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With modern mail clients you will have the ability to send the mail content as html. I a time where mails are read on all kind of devices with different screen sizes you might face the need for a more advanced web/html design that you might not be able to obtain in your mail client. Making your responsive web design in a 3rd party application you ends up with your perfect design (e.g. for your newsletter) as a html file with a simple last task in mind - "Now I just have to mail it". At this point you might find out that this simple task might not be as simple as you expected. MailMyHtml to your resuce, saving you for hours of googling to find a solution. Simply MailMyHtml enables you to import your html file from Dropbox and put it directly in the mail body - ready to be send. If you do not have an existing html file, you also have the option to write html directly in the app and preview it before sending it.
Screenshots
Verdict
The clearest difference is price: MailMyHtml at Free against Diapason Audio Generator's $1.99. MailMyHtml also leads on ratings volume (3 vs 1) and iOS requirement (10.0 vs 12.2). Diapason Audio Generator's advantage is rating (5.0 vs 3.0). On review sentiment, update cadence, ads and in-app purchases 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
MailMyHtml is free to download; Diapason Audio Generator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Diapason Audio Generator holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews point the same way: 56% of Diapason Audio Generator's written reviews are positive against 50% of MailMyHtml's.
Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | Diapason Audio Generator | MailMyHtml |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 3.0 (3 ratings) |
| Positive reviews | 55.6% of reviews — better | 50.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 5 months | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.2 | 10.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Fabien Lefebvre | Dennie Frifeldt |
Customer experience
Diapason Audio Generator
MailMyHtml
In-app purchases
Diapason Audio Generator
No in-app purchases
MailMyHtml
No in-app purchases
Questions
Is Diapason Audio Generator free?
Is MailMyHtml free?
Which has better reviews, Diapason Audio Generator or MailMyHtml?
Do Diapason Audio Generator or MailMyHtml have ads?
Which is updated more often, Diapason Audio Generator or MailMyHtml?
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