Yeap, skitto gives you total control of your pay as you go usage, so even while you are using pay as you go, you can change your daily limit.
What happens if you set your limit lower than the amount you have used up:
Suppose your previous pay as you go limit was tk 4 and after you have used up tk 3, you decrease your limit to tk 2. In this case, you will not be able to use pay as you go for the day as you have already consumed more than your new limit.
You will be able to use pay as you go again from 12 AM the next day with the new pay as you go limit.
What happens if you set your limit over the amount you have used up:
Once again, let’s assume you had tk 3 as your daily pay as you go limit. After you have used up tk 3, if you want to consume more, then simply go to settings and increase your daily limit above 3. Now you will be able to continue surfing the web. By the way, the maximum daily limit you can set is tk 5.
IMPORTANT: every time you change your pay as you go limits you have to turn your phone internet off and then on again.