‌Design Planetary Gears set.
Input parameters are target range of reduction ratio, range of ring gear, number of planet gears.
You cannot decide number of teeth combination directly.
You should choose possible set of teeth numbers from the shown list.

‌Among the possible planetary gears sets lists, some combinations fit perfectly without profile shift, and others require profile shifts.
In the case of profile shift needed you can distribute profile shift values to each gears for balance.
You can handle non equal space sets.

‌You can make helical gears planetary gears set.
.In this case axial module is used to find possible numbers of combination and set profile shift.

‌KRAVERSOFT GEAR - Planetary Gears for NX. Combined version.