It is planned for version 14.0, this can change.
It will most probably be implemented after the new battle system.

It´s now v14.1
Where is the simulator ? :o

Here for the future new combat system: tools.raven-core.com/combat/

And here my very old combat simulator: ravenc.lima-city.de/kbsim/space4k.de/
This should still work with the current game version.

stiddari? It is possible In all language?

The new combat simulator isn't available for stiddari at the moment, because the stiddari units wasn't rebalanced until now.
The old combat simulator is available in several languages:

ravenc.lima-city.de/kbsim/sim/vendetta1923.com.php
ravenc.lima-city.de/kbsim/sim/vendetta.es.php
ravenc.lima-city.de/kbsim/sim/vendetta1923.it.php
ravenc.lima-city.de/kbsim/sim/vendetta.pl.php
ravenc.lima-city.de/kbsim/sim/vendetta.fr.php
ravenc.lima-city.de/kbsim/sim/vendetta.de.php
ravenc.lima-city.de/kbsim/sim/vendetta.com.pt.php

ravenc.lima-city.de/kbsim/sim/space4k.com.php

The old combat simulator of (vendetta) does not match the current combat system of stiddari

It should match. There only should be some slight differences.

You try with this fight:

Kampfbericht: 31:24:240 (ĐoɳSαcӊα) >>> 30:24:3 (JM_)
09.06.2017 00:09:24

Kampfrunde 1
Einheiten Anzahl vernichtet Anzahl vernichtet
Schläger 0 0 50 50
Spion 0 0 241 241
Möbelpacker 0 0 195 195
CIA Agent 0 0 2 2
FBI Agent 0 0 3 3
Transporteur 0 0 667 667
Profikiller 0 0 4 4
Söldner 176666 0 24169 24169
Attentäter 0 0 592 592

Angriffswert 14.597.028.250 * 81%
= 11.823.592.883 1.328.351.447 * 90%
= 1.195.516.302
Verteidigungswert 17.516.433.900 1.593.977.050
Siegchance 100% 0%
Spionagechance 0%

erbeutete Rohstoffe
Waffen 5.139.000
Munition 9.324.000
Alkohol 0
Dollar 5.274.000