OiSTER Bonus is a free Android application designed for OiSTER customers to earn points while shopping with partner merchants. The app allows users to link their payment cards, ensuring that they automatically accumulate points with every eligible transaction. Each point earned translates to one krone, which can be used to reduce monthly bills with OiSTER, making it a convenient way to save money on mobile expenses.

The process is straightforward: after downloading the app, users simply connect their payment cards and start earning points with each purchase. The accumulated points are then automatically deducted from their monthly OiSTER bill, streamlining the savings process. This user-friendly app enhances the shopping experience while providing financial benefits to loyal OiSTER customers.