MIDI Designer Pro 2 (v2.131) Installs on iOS 9.3.5 iPad in January 2025 if Both First Added to Apple ID Account on Current iOS Device as MIDI Designer Pro X (Current Version) and Then Installed on Old iOS Device as an Already Purchased App from the "PURCHASED" TAB (Only) of the Apple App Store
MIDI Target Manufacturer(s): Apple
I just (January 2025) successfully newly installed / ran MIDI Designer Pro 2 (v2.131) on "old" iPad Mini 1 running its final iOS v9.3.5 (technically v9.3.6 because mine is a cellular-capable edition).
The trick was twofold:
1) You must log in to your Apple ID Account on a "current" iOS device (i.e. iPhone or iPad) that is running a new enough iOS version to support installation of current MIDI Designer Pro X from the Apple App Store, and then "Get" / install Pro X on your account. (I used someone's newer iPhone, signed owner out, logged in my Apple account, installed Pro X, then logged out of my Apple account).
2) On your own "old" iOS device, in Apple App Store you MUST GO TO THE "PURCHASED" TAB (button appears at very bottom of display), touch the "NOT ON THIS IPAD" button near top of display, and find MD Pro X in the list of apps you already previously purchased. Touch the MD Pro X already purchased icon, then in the box that opens touch the CLOUD WITH DOWN-ARROW (download) ICON right above the "Details" tab, which will give you a prompt to install the last compatible version of MIDI Designer. Accept and MD Pro 2 will download and install.
I previously tried simply searching for "MIDI Designer" in the search box upon running the App Store, but when I tried to install MD Pro X from those search results (which I later realized appears within App Store's default "Featured" - and NOT the "Purchased" - tab), an error message would always appear, stating the Pro X app is not compatible with my iPad. (I can only blame this on poor - or intentionally nefarious - software design on Apple's part, since the App Store search results clearly knows which apps are installed ("Get" instead appears as "Open") and further knows exactly which apps you previously installed and gives access to the last compatible version (as described above). So, why, exactly, does the Featured/search results for the EXACT SAME APP (e.g. MD Pro) within APPLE'S OWN EXACT SAME APP STORE give you a DECEPTIVE BRICK WALL stating you can't run the desired app, when ONLY ONE TAB AWAY ("Purchased") it COMPLETELY CONTRADICTS ITSELF (and installs a compatible version)?? Apple trying to obfuscate and confuse users into buying new hardware?
(Incidentally, if you're also using Logic Pro DAW on a Mac and have an older iPad, you can use the identical technique to download/install Apple's official Logic Remore controller, which, despite reports of the contrary online in various forums, indeed works perfectly with the very latest versions of Logic Pro. (And remember, it uses your Wi-Fi connection, NOT Bluetooth, in case you need to troubleshoot... )
Anyway, I'm very excited about and grateful for MIDI Designer Pro 2 working on this iPad (which contributes to saving a perfectly nice piece of hardware from a premature grave)! Sincere thanks to the MIDI Designer team!