Question: There is no fruit jet pack. I can't get it. How do I get it? I looked at the jetpacks many times. There are none.

Answer: 
As of Version 1.5, Halfbrick (the developers) have been **rolling inventory.** The inventory of items to purchase will be different every week and completing the cycle in 22 weeks.

> 
> Our new Jetpack Joyride update is jam-packed with content! We’ve added
>  a new vehicle, more jetpacks, several outfits and that’s just the
>  beginning! There’s still plenty to come thanks to our all-new rolling
>  inventory system which adds new content every week. Read on for all
>  the details!
> 
> 
> **How does it work?**
> 
> 
> All jetpacks and outfits, both new and old, are now on a giant loop.
>  There will always be a set number of items available for purchase and
>  these will be rotated on a weekly basis.
> 
> 
> As new items are added, others will be cycled out. These could be
>  completely new items or fan-favourites returning to the game. The
>  process continues until we’re back at the beginning.
> 
> 
> **What happens if I miss an item? Is it gone for good?**
> 
> 
> Nope! It’s important to note that no items have been permanently
>  removed from the game. Items which are currently missing will
>  eventually return as the cycle progresses.
> 
> 
> 

[Source](http://halfbrick.com/jetpack-joyride/jetpack-joyride-1-5-rolling-inventory-faq/)

If you don't see it now, keep checking every week as new inventory will be in stock to purchase.

**Once the Fruit Jetpack is available in the store, purchase it (20,000 coins), have it equipped, ride Mr. Cuddles** and the achievement will pop.

![enter image description here](https://i.stack.imgur.com/SGigz.png)
Well, comparing my iPhone 5 to my Windows 8 computer versions of Jetpack Joyride, my computer has the Fruit Jetpack, but my iPhone does not... This may only be a computer feature, but if you see this achievement on Game Center then it is probably the creators fault that must be fixed by them. Maybe post a review on the game about it and read others to see if anyone else is having similiar problems