PhotoPad
8.8#2 in photo editing softwareFree planFree planAndroidiOSWebExtension
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PhotoPad suits people who want photo adjustments, RAW editing, and creative project tools such as cards or collages in one editor. Its free edition fits non-commercial use, while people using it for business should consider the available paid editions.
You want what its maker publishes above — check its page for the details.