app
Please note that a photo will not always work well in a pillow format.
Very often, too many details get lost unless you crochet with very fine yarn.
Blankets work best for photos because they offer plenty of space for image details.
Your gauge swatch is important so that your crocheted piece does not end up looking distorted and has the size you want. Everyone has an individual crochet and knitting style, which is why the image should be optimized for the way you work. The more closely the gauge swatch matches your style, the more accurately the app can calculate the total number of stitches and rows needed.
The gauge printed on a yarn label is always only a guideline.
Keep this in mind: The app can only be as reliable as the gauge swatch you enter.
A gauge swatch shows how many stitches and rows fit into 10 cm x 10 cm.
Tip: If you carry the yarn while crocheting, remember to do the same for your gauge swatch.
For Tunisian crochet, the gauge swatch works exactly the same as a "normal" gauge swatch (see How do I make a gauge swatch?).
However, it is important to note that in Tunisian crochet, 1 row = forward pass and return pass.
So after, for example, 10 forward-and-back passes, 5 rows must be entered as the gauge swatch.