Short Answer:
Yes — CYVIO security products work without any subscription or monthly fees.

Details:

• All CYVIO security cameras and systems support local storage (e.g., on a microSD card), so you can record and access footage without paying any subscription fees.
• There is no cloud requirement or hidden recurring charge to use your cameras’ core features. All function are free, with no subscription required.
• You can still use the free CYVIO mobile app to view live video and playback recordings remotely without extra costs.
• Optional accessories (e.g., larger storage, extended app features) do not require a mandatory subscription to function.