The Free plan is 5 images at a time, in 1 project — delete an image you no longer need and you'll have a free slot again, forever. If you'd rather not manage that, upgrade to Monthly or Yearly for unlimited projects and images.
Anytime, from your account settings. Upgrade to yearly and we credit your unused monthly time; switch back at renewal.
If MarkerBack isn't for you, email us within 14 days of your first payment and we'll refund it in full.