Free filter: is great filter which gives a nice warm tone to your pictures. I recommend to take sky or landscape pictures cause those look the best with this filter. Looks the best with white , blue , skin tones and sunsets.
Here's a nice warm filter that looks good on everything. It definitely needs adjustments depending on the picture, especially the contrast and temperature. It looks best with brown , skin tones and pretty much just any warm tones.
darker tinted filter, it seems similar to the "iPhone fade filter" and you can do it for free on vsco, good for a feed as well