Hi,
It is a great concept and services with great potentials here.

Can you do and consider doing
Indepent, stand alone, SWAP activity Apps for two cryptos.
It would be a
simplied exchange, or one-sided sell-buy (market place-like) activities, and primarily a sponsorship.
It is for promotional purpose for attracting mobile users
It is simply one-sided buying (of the sponsored coin) (by me) in exhange for another crypto.
The functions can be integrated with a wallet client, but should be mobile-capable by being able to be integrated with a
webwallet or with the capability to post a button link or placed in popups of a website or even better, by working directly in a mobile
phone AppThe sponsored is a mobile-syncing ("mining") crypto, still syncing despite the fact that the
devs' have been AWOL for more than one year. There is still a webwallet, a limited block viewer. It is a risk only for me by keeping and sponsoring the other crypto which might start to misbehave; I take the risk; the service is offered
as is.
Unless it can be rescued, there is no other great way to attract mobile phone everyday persons who are not crypto or mining savvy. If we succeed, we would be able to attract unlimited mobile phones users and good for the cryptos world.
Please see
https://bitcointalk.org/index.php?topic=902788.new#newThanks.

I've been thinking about your question but the best answer i've got is that, what are you asking is more feasible by an exchange service. I am not saying that it is impossible to create such an application but
at this stage we must concentrate to deliver the services we were promissig to our ico investors, and developing such an application almost from the scratch since MangoCoinz, as far as i know, has no
open source blockchain or even an open source client, would be a very time and resource consuming task which we can't assume at the moment. Also even if the application would exist there would be the task of prooving the ownership of the coins from the existing MCZ network. The best option would be to come to an agreement with the exchanges which already has MCZ listed and do there the swap, if you still consider that developing a standalone app is the best solution you shall contact us about this matter in a few months when we have a stable client base for the services we offer at a regular basis and we can dedicate the team to other challenging tasks too.