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EX Emulators vs USP - ZX Spectrum Emulator: catalog facts
EX Emulators	USP - ZX Spectrum Emulator
Free Source code is published under the GPL.	Free Free and open source under the GPL-3.0-or-later licence.
Linux, Android	Android
Covers many consoles and home computers Focus on low audio and video latency	Wide file format support including tzx, trd and rzx Emulates Pentagon 128K with AY/YM sound and Beta Disk
Each system is a separate app rather than one frontend Mainly targets Android and Linux	Emulates the ZX Spectrum family only Sparse project homepage and documentation
Downloadable app	Downloadable app
Open source	Open source
License: GPL	License: GPL-3.0-or-later
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 October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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