The best alternatives to Kredo iPad Portfolio are Creative Portfolios, Makerwing, and Gallery. If these 3 options don't work for you, we've listed a few more alternatives below.
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Snowflake O'Reilly Report— Design a Modern Application Data Stack
Makerwing allows product makers to easily generate beautiful portfolios. Simply enter your project URLs, and Makerwing does the rest. Pick up more freelance & consulting work.