Imagine, you are hungry, very hungry ... You take out your dish from the freezer, you put it mechanically in your microwave oven and you read the indications on the packaging of your dish. 10 min to 1000 W, perfect!
Yes, but here you go, your oven is 800W and you do not want to miss the cooking of your dish: this app gives you a conversion of the duration depending on the oven power of the recipe and your oven.

The times may also vary depending on the container used, the amount to be heated. Please refer to the manual of your device.