Neither Previewmojo nor Thumber offers a free trial.
Previewmojo is designed for Freelancers, Medium Business and Small Business.
Thumber is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Previewmojo Starts at $9 whereas for Thumber Starts at $7/Month when Billed Yearly.
Some top alternatives to Previewmojo includes CloudSocial, Posted, Bannerly, TweetShots, Postaside, Qualified, Previewify, Workvivo, Thumber, Featured Image Creator, Blog To Social and IFTTT.
Some top alternatives to Thumber includes Imagify, Bannerly, Qualified, Previewify, Quicq, Workvivo, Sigmail, Polish, Baseline, AppLaunchpad, Mugshot Bot and Previewmojo.