Zamen | زامن
iOS 10.3 Beta Says 32-Bit Legacy Apps Will Not Work With Future Versions of iOS
Since iOS 10.1, when a user opens an old 32-bit app on a newer iPhone, iPad, or iPod touch, Apple has reinstated a warning that the app may slow down the device until the developer updates it to improve its compatibility. The apps are still fully usable, however, despite the possible performance issues.
See this content immediately after install