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Portfolio Performance vs JStock: catalog facts
Portfolio Performance	JStock
Free Free and open source under the Eclipse Public Licence 1.0.	Free Free open-source software supported by donations.
Windows, macOS, Linux	Windows, Android
True time-weighted and internal rate of return, not a simplified percentage Handles several accounts and depots as one portfolio	Covers 28 stock markets Portfolio tracking with net worth calculation
Eclipse-based, so it is heavy and the interface is unusual The terminology assumes some investing knowledge	Market data depends on what the app can fetch for each exchange Interface is a traditional desktop application
Downloadable app	Downloadable app
Open source	Open source
License: EPL-1.0	License: GPL-2.0
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 2, 2026

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