How to download nds roms without coolrom or computer?

I have nds4ios on my iPhone 5s and I it is version 2.0 that I downloaded from pgyer when I tried to "open in nds4ios" it just didn't show up
Also when I used Dropbox it said successfully synced but the game still didn't show up

http://www.macrumors.com/2014/04/13/nds4ios-nintendo-ds-emulator/

read about having to change the date on your device before installing the rom…( you can change the date back after installation )

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