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nip4 vs Retrobatch: catalog facts
nip4	Retrobatch
Free Free and open source under the GPL-2.0 licence.	Paid Paid app with a 7 day free trial.
Windows, Linux	macOS
Spreadsheet model recalculates dependent images when an input changes Built on the fast libvips image library	Visual node-based workflows with multiple inputs and outputs Metadata editing and stripping without recompressing images
No releases published on the GitHub repository Suited to processing pipelines rather than ordinary photo retouching	macOS only Paid after the 7 day trial
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.