"FOSS Image Editor" is fully Open Source. And needs no unnecessary permissions (only write on storage to save the edited pictures). It's lightweight (< 5 mb), clean, easy to use and nice looking.

• Download Releases
• Watch Changelog
• See license
• See screenshots
• XDA - Link

• adjustments: brightness, gamma, saturation, ...
• filter: sepia, monochrome, invert, poster, comic, ...
• add text: add, resize and rote text
• crop: crop, rotate or flip the image

• permissions: only "read and write on sd-card"
• dependencies: no Google dependencies
• sending user data: no user data will be collected and send to any other servers.
• "FOSS Image Editor" doesn't have permission to use the internet

To achieve this, I'm using several libraries (see in the About --> license dialog). I will only add new features, when it doesn't make to much trouble. In the best case there's a library to achieve the implementation of new features. So please test "FOSS Image Editor" and give your feedback. The Open Source Community is depending on users, who share their experience.