Are games for IOS universal among all I-devices?

Just an old friend stopping in to see how things are going and was curious of something. Are all the games that are out there for IOS universal? Meaning if i buy it on Ipad, will it be downloadable on my Ipod or my Iphone? A lot of games are and was curious if these fit into that group.

Nice to see a lot of familiar faces still hanging around

Most of our iOS games right now are device specific - one version for iPhone/iPod and one for iPad.

Plant Tycoon, however, is universal.

Hope it helps (and welcome back, Village Monk!)

Thank you