Comparison

Diapason Audio Generator vs MailMyHtml

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

Diapason Audio Generator4 screens
MailMyHtml4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard5 real differences · 5 level
Diapason Audio Generator versus MailMyHtml: the parameters behind the verdict, then further details
ParameterDiapason Audio GeneratorMailMyHtml
Price$1.99Free — better
Rating5.0 (1 ratings) — better3.0 (3 ratings)
Positive reviews55.6% of reviews — better50.0% of reviews
Number of ratings13 — better
Update frequencyEvery 5 monthsEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.210.0 — better
Further details — not scored
Size2 MB1 MB
Age rating4+4+
DeveloperFabien LefebvreDennie Frifeldt

Customer experience

Diapason Audio Generator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive55.6%
Neutral33.3%
Negative11.1%

MailMyHtml

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Diapason Audio Generator

No in-app purchases

None

MailMyHtml

No in-app purchases

Questions

Is Diapason Audio Generator free?
Diapason Audio Generator costs $1.99, with no in-app purchases.
Is MailMyHtml free?
MailMyHtml is free to download, with no in-app purchases.
Which has better reviews, Diapason Audio Generator or MailMyHtml?
Diapason Audio Generator is rated higher. Diapason Audio Generator averages 5.0 out of 5 from 1 ratings, while MailMyHtml averages 3.0 from 3 ratings.
Do Diapason Audio Generator or MailMyHtml have ads?
Neither Diapason Audio Generator nor MailMyHtml shows ads.
Which is updated more often, Diapason Audio Generator or MailMyHtml?
Diapason Audio Generator ships an update every 5 months, and MailMyHtml every 5 months. Most recently, Diapason Audio Generator was updated on November 1, 2026 and MailMyHtml on November 2, 2026.

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