There is also a universal remote TV app named "Zaza Remote" that is generally a good choice for simple TV control. However, the users complain that the app will not retain remote settings, and you will have to set up your devices each time you use the app. But the developers are highly responsive and fix the problems.

Major characteristics of the Zaza Remote application

Functionality: Provides fundamental functionalities to control many different TVs with their shooter in your phone, such as navigation in the menu, switching channels, adjusting volume, and so on.

Flexibility: All TV brands are compatible, but users would have to search manually for their own model in order to use it properly.

Major defect: The greatest defect is that users may have to enter their device details anew every time they launch the apps since it normally does not support remote settings to be remembered.

Developer reactivity: The users praise the developer for being responsive to feedback and willing to correct things, even in the face of the saving problem.

Users Feedback

All else being equal, if all you need is a basic universal remote app that will work with a broad range of TVs and you don't mind the chance of having to reset your devices repeatedly, the Zaza Remote app could be a good option, provided that you don't mind the developer's quick reaction to user complaints.

It might be convenient for you, but not for everyday use. Usability: one star. Editing and DIY: three stars. Although the app is improving, its worst aspect is that it does not save remote settings to local or cloud.

Limitations

Compatibility issues: Not all universal remote controls are compatible with all devices, especially newer devices or devices needing special technology.

Complex Installation: The first installation is often labor-intensive and time-consuming, involving the use of special codes or human programming.

Limited Functions: A universal remote will have none of the features or buttons of one remote.

Battery Dependence: Like other remote controls, universal remotes are battery-operated, so they will generally need to have their batteries replaced periodically.

Learning Curve: It is frustrating and takes time to become accustomed to the programming and design of a new remote.

Advantages

Convenience: With a single remote control, clutter is minimized by the convenience of operating multiple devices (TV, DVD, sound system, etc.).

Simplified Usage: This simplifies the usage by minimizing the number of remotes required, allowing families and visitors to find it simpler to use equipment.

Personalization: Universal remotes typically provide programmable buttons and settings that enable customization of frequently used functions.

Cost-effective: A universal remote is generally less expensive than buying a remote for every device.

Learning Capability: Other models learn to accept instructions from other remote controls and therefore are more compatible with older or less used devices.

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Conclusion 

Universal remote controls are convenient and greatly streamline the means to control a variety of devices, but sacrifices in usability and compatibility are made.