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USP - ZX Spectrum Emulator vs EX Emulators: catalog facts
USP - ZX Spectrum Emulator	EX Emulators
Free Free and open source under the GPL-3.0-or-later licence.	Free Source code is published under the GPL.
Android	Linux, Android
Wide file format support including tzx, trd and rzx Emulates Pentagon 128K with AY/YM sound and Beta Disk	Covers many consoles and home computers Focus on low audio and video latency
Emulates the ZX Spectrum family only Sparse project homepage and documentation	Each system is a separate app rather than one frontend Mainly targets Android and Linux
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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