Comparison

Regla de tres vs Deom Mail

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

Head to head

Rule of Three

About

Regla de tres

Features

Read full description

Rule of three calculator.

About

Deom Mail

Features

Read full description

Access all your email accounts at once with the univeral account and even search through all accounts at once. Create rich messages with word formatting, lists and more. Unsubscribe from newsletters with one tap. Make yourself at home: Personalize the design, adapt the swipe gestures, create you account specific signatures and much more. Manage email like a pro: forward several messages, forward all attachments of one or several messages, request and sent receipts.

Screenshots

Regla de tres2 screens

Deom Mail4 screens

Verdict

The call

The clearest difference is ads: Deom Mail at none against Regla de tres's shown. Deom Mail also leads on update cadence (every 3 months vs every 19 months) and iOS requirement (13.0 vs 15.6). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Regla de tres ships an update every 19 months, Deom Mail every 3 months. Both last shipped on October 27, 2026.

Scorecard3 real differences · 3 level

Regla de tres versus Deom Mail: the parameters behind the verdict, then further details
Parameter	Regla de tres	Deom Mail
Price	Free	Free
Update frequency	Every 19 months	Every 3 months — better
Ads	Yes	No — better
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15.6	13.0 — better
Further details — not scored
Size	24 MB	38 MB
Age rating	4+	4+
Developer	Edwin Mejia	SLNEE.CO

In-app purchases

None

Regla de tres

No in-app purchases

None

Deom Mail

No in-app purchases

Questions

Is Regla de tres free?

Regla de tres is free to download, with no in-app purchases.

Is Deom Mail free?

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

Do Regla de tres or Deom Mail have ads?

Regla de tres shows ads; Deom Mail does not.

Which is updated more often, Regla de tres or Deom Mail?

Regla de tres ships an update every 19 months, and Deom Mail every 3 months. Most recently, Regla de tres was updated on October 27, 2026 and Deom Mail on October 27, 2026.