I would propose we wait for the first website offering convenient access to the BCE blockchain appears that has a nice mobile version and forget about the rest.
If that doesn’t happen in time, the development of exactly such a website gets funded by a BKS grant (or a BKC grant; unlikely, but possible if there’s already enough traffic by transactions on BCE’s blockchain).
I don’t see the benefit of an app for Android, IOS (what about WindowsPhone, etc.?)
You can have a very transparent funding of the website and as a result another product related to BCE that generates revenue: BCE’s exchange website with the fees for using the website!
edit: some more thoughts about such a website: [Passed] Motion to provide seed funding for B&C Exchange - a decentralized exchange built on the Peershares platform
Teaser for those who don’t know that post already: it deals with a trustless version of such a website 
I don’t feel like you have explained why it’s necessary to continue the sale of BKS now.
And I haven’t found an explanation why those who come late and have to face much less risk, don’t have to pay more per BKS for having less risk…
Frankly, the current demand for buying BKS directly from BKS is low. This might change once BCE has it’s first success (whatever may be perceived as such). After that there will be demand, BKS will be more valuable. Let’s relfect that in the price.
If there’s no such success and BCE fails, the remaining 50,000 BKS will not be sold - either if the sale continues now or gets restarted by a new BKS grant.
But stopping the sale now would provide current BKS holders provide with a better exit from holding BKS (for those who want that):
stopping the BKS sale and burning the remaining BKS removes sell pressure from the market.
As long as the sale goes on it will be hard to come close to a price of $4 at the market.
…what you have demonstrated by your offer
A long as there’s a virtual sell wall of 10,000 BKS at $4.08 and over 20.000 BKS each at $4.16 and $4.24 the market price will be below that which is not in the best interest of the current BKS holders…
…who are able to change that by this motion once it has started.