Q: Does iOS App Store allows older legacy app to be downloaded to support older hardware and software ?

You can download older versions of apps if you have a computer or another device running a newer  iOS version. This explains how to do it.

Install the latest compatible version of an app on an earlier version of iOS or OS X - Apple Support

ToKuten wrote:

 

Thanks for your help but i tried by this way and it doesn t allow to download older apps.

Also they are free app so i just search them and used the install function.

Why doesn't it work for you? If it doesn't work, that means that the developers have pulled the older versions of the apps.

Whether the apps are free or paid doesn't matter. What the article means is that you have to download the new version on a device that can run that version - or download the newest version of the app in iTunes on your computer so that you can go to your iPad purchased tab of the App Store, find the app, tap on it to try to download it, and you should get a message asking if you want to install the latest compatible versions for your iOS.

ToKuten wrote:

 

Thanks for your help but i tried by this way and it doesn t allow to download older apps.

Not all vendors  support this.

 

Also they are free app so i just search them and used the install function.

Not sure what that means. The only way to install apps on a non jailbroken device is via the app store or iTunes. Is that what you mean?

They can elect to have earlier versions available, and a few do. But it is purely a vendor decision, not Apple's. 

You can certainly contact them to offer the feedback, but honestly, if those specific vendors were going to support version of iOS that old, they would have already done so.

Good luck.