skitto is an end to end digital product of Grameenphone that completely runs on an app. Which is why you can't come to skitto through the port-in process. You need to buy a skitto SIM to use skitto services.
skitto's new SIM offers
• 3GB bonus with 7 days validity with skitto app registration • 100 SMS, 50MB data & 10 taka mobile balance • 1GB bonus with 7 days if you buy the SIM with a promo code