I put this post together for one of the other threads and thought I would post it's own thread to give everyone easy access to the numbers with various devices. This info is all taken from various websites so do some research before deciding on a particular model etc. Feel free to add to this if there's any other user experience.
I'm no Apple guru, but have had various iPods, iPhones 4,5 and 6+ and also iPad 3 and Air 2.
Taken from various Wikipedia and other sources, so take with a pinch of salt:
iPod
4th gen: 800 MHz ARM Cortex-A8
5th gen: 800 MHz dual-coreARM Cortex-A9
6th gen: 1.1 GHz dual-core Apple ARMv8[2] - £200/$300 - 4" Retina Display - 1136 x 640 resolution screen - (released July 2015)
iPhone
3GS: 600 MHz ARM Cortex-A8[3]
4: 800 MHz ARM Cortex-A8[4]
4S: 800 MHz dual-coreARM Cortex-A9[5]
5 / 5C: 1.3 GHz dual-core Apple A6
5S: 1.3 GHz 64-bit dual-core Apple A7
6 / 6 Plus: 1.4 GHz 64-bit dual-core Apple A8 - £500/$750 - 4.7 or 5.5" Retina Display - 1334 x 750 or 1920 x 1080 - (released Sep 2014)
6S/6+S?: Sep 2015?
iPad
1st generation:1 GHz ARM Cortex-A8[8][9]
2nd generation:1 GHz dual-core ARM Cortex-A9
3rd generation:1 GHz dual-core ARM Cortex-A9
4th generation:1.4 GHz dual-core Apple A6X
Air:1.4 GHz dual-core Apple A7 - (released Nov 2013)
Air 2:1.5 GHz tri-core Apple A8X - £400/$600 - 9.7" Retina - 2048 x 1536 - (released Oct 2014)
Mini 1st generation:1 GHz dual-core ARM Cortex-A9
Mini 2 & 3:1.3 GHz dual-core Apple A7 - £300/$450 - 7.9" Retina - 2048 x 1536 - (released Nov 2013 or Oct 2014)
Air 3?: Oct 2015?
Mini 4?: Oct 2015?
A 2010 4th gen iPod just won't work. A 2012 iPod touch 5th gen won't work well (same processor as iPhone 4S and not as good as iPad 2). I tired it on an iPad 3 (which is slightly better) and it crashed pretty often. I bought an Air 2 specifically for SkyTrack.
The iPod 6th gen (just released, July 2015) is Apples newest devices and should work fine, it's the same chip as the iPhone 6, just at a slightly lower clockspeed. But the iPod has less "work" to do, so they should be fairly equal in performance.
For those that don't have an iPhone 6/6+, Air 2 or Mini 3 the best bang for buck just to run/ collect data from the SkyTrack "should" be the iPod 6th Gen (if the screen size works ok) and it should be about as quick as all three. I'm not sure why anyone would buy an iPod anymore though, unless they have a super cheap shitty phone/ the type that always loses or breaks phones and would have a PC or laptop at home. Their iPod being their travelling internet, camera and music device so to speak. The iPod 6th gen also does 120fps video like the 6 and 6+ which is great for recording swings
With any of this though, if someone wants a device to run the SkyTrack and they're trying to save on cost, wait until September/ October and the new apple devices come out (costs will drop), or wait until an Android version of the app comes out.
To me, on any device any delay less then 10 seconds is fine, as I hit my shot, pick up the ball and tee up again before looking where the shot went. I try to use the same ball so my numbers are consistent when gap testing etc.
I'm no Apple guru, but have had various iPods, iPhones 4,5 and 6+ and also iPad 3 and Air 2.
Taken from various Wikipedia and other sources, so take with a pinch of salt:
iPod
4th gen: 800 MHz ARM Cortex-A8
5th gen: 800 MHz dual-coreARM Cortex-A9
6th gen: 1.1 GHz dual-core Apple ARMv8[2] - £200/$300 - 4" Retina Display - 1136 x 640 resolution screen - (released July 2015)
iPhone
3GS: 600 MHz ARM Cortex-A8[3]
4: 800 MHz ARM Cortex-A8[4]
4S: 800 MHz dual-coreARM Cortex-A9[5]
5 / 5C: 1.3 GHz dual-core Apple A6
5S: 1.3 GHz 64-bit dual-core Apple A7
6 / 6 Plus: 1.4 GHz 64-bit dual-core Apple A8 - £500/$750 - 4.7 or 5.5" Retina Display - 1334 x 750 or 1920 x 1080 - (released Sep 2014)
6S/6+S?: Sep 2015?
iPad
1st generation:1 GHz ARM Cortex-A8[8][9]
2nd generation:1 GHz dual-core ARM Cortex-A9
3rd generation:1 GHz dual-core ARM Cortex-A9
4th generation:1.4 GHz dual-core Apple A6X
Air:1.4 GHz dual-core Apple A7 - (released Nov 2013)
Air 2:1.5 GHz tri-core Apple A8X - £400/$600 - 9.7" Retina - 2048 x 1536 - (released Oct 2014)
Mini 1st generation:1 GHz dual-core ARM Cortex-A9
Mini 2 & 3:1.3 GHz dual-core Apple A7 - £300/$450 - 7.9" Retina - 2048 x 1536 - (released Nov 2013 or Oct 2014)
Air 3?: Oct 2015?
Mini 4?: Oct 2015?
A 2010 4th gen iPod just won't work. A 2012 iPod touch 5th gen won't work well (same processor as iPhone 4S and not as good as iPad 2). I tired it on an iPad 3 (which is slightly better) and it crashed pretty often. I bought an Air 2 specifically for SkyTrack.
The iPod 6th gen (just released, July 2015) is Apples newest devices and should work fine, it's the same chip as the iPhone 6, just at a slightly lower clockspeed. But the iPod has less "work" to do, so they should be fairly equal in performance.
For those that don't have an iPhone 6/6+, Air 2 or Mini 3 the best bang for buck just to run/ collect data from the SkyTrack "should" be the iPod 6th Gen (if the screen size works ok) and it should be about as quick as all three. I'm not sure why anyone would buy an iPod anymore though, unless they have a super cheap shitty phone/ the type that always loses or breaks phones and would have a PC or laptop at home. Their iPod being their travelling internet, camera and music device so to speak. The iPod 6th gen also does 120fps video like the 6 and 6+ which is great for recording swings

With any of this though, if someone wants a device to run the SkyTrack and they're trying to save on cost, wait until September/ October and the new apple devices come out (costs will drop), or wait until an Android version of the app comes out.
To me, on any device any delay less then 10 seconds is fine, as I hit my shot, pick up the ball and tee up again before looking where the shot went. I try to use the same ball so my numbers are consistent when gap testing etc.
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