ProShot is a camera app for Android that costs $2.99 and has zero in app purchases.
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Pro Full manual control in Photo, Timelapse, and Video modes
On devices with Camera2 API support (currently LG G4, Nexus 5, Nexus 6, Samsung Galaxy S6/S6 Edge), ProShot offers full manual control over ISO, shutter, white balance, and focus, in any mode, even during video recording.
Pro Supports multiple aspect ratios
ProShot has options for 4:3, 16:9 and 1:1 aspect ratios allowing the shooter to choose what best suits their intended shape. It also has support for custom aspect ratios, so 3:2, 21:9, 50:3, and more are all possible.
Pro RAW and other format support
ProShot can shoot in RAW, RAW + JPEG and JPEG formats, giving ample options for one to shoot in.