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Switching from a paid app to a free app with auto-renewing subscription
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Solved iphoneiosin-app-purchasesubscriptionauto-renewing
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I have an app which costs $5. I'd like to change this so that the app is free and that users must purchase an auto-renewing subscription to use it. I know how to implement the auto-renewing subscription, but the problem is dealing with users who have already bought the app for $5; I'd like to continue letting these users use my app without a subscription.

The rub is that for privacy reasons I can't store any identifying information on my server which link an account for my app to a specific person (not even UIDID). What I can do is maintain a separate database table which links UIDIDs to subscription purchase receipts which will allow me to know if a user has a subscription.

So my question is, how can I identify users who got my app when it cost $5? I know there's a way to restore in-app purchase receipts, but is there a way to to retrieve a receipt for the initial purchase of the $5 app which I could store on my server?

The poor man's solution is just to mark all current UIDIDs (i.e. the UIDIDs of people who have paid $5) in my server as paid, but then they would have to buy a subscription if they ever wanted to use my app from a different device.

Byssinosis answered 12/10, 2011 at 13:24 Comment(1)
Why the down vote? If the question wasn't clear, please comment so I can fix it. – Byssinosis
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Chaning your business model like this is not very well supported by the App Store.

Your "poor mans" solution is probably one of the best of a poor set of options.

Another one would be to switch to a new app entirely (just a different bundle ID in practice). Anyone using your old app would have paid, regardless of which device they use. Anyone using the "new" app would need a subscription. Obviously you'd lose any reviews and possibly external links that you currently have.

Peppermint answered 12/10, 2011 at 13:47 Comment(3)
I suspected there was probably no good way to do this. The separate app idea is intriguing, though I'd probably have to roll out a few updates to the current users before doing something like that. Am I right in assuming that I could no longer release updates to the old users if I went with this solution (because I'd have to take the paid app out of the App Store)? – Byssinosis
You could do something like increase the price to $999 and remove all keywords, that way no-one will find or buy it. (Drinks on you if they do!) – Peppermint
This answer is now outdated see my answer – Ridgley
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The previously selected answer is outdated. The new answer is that it is possible today with the new receipts that were standardized this year (2013).

The receipt now has two additional fields: original_application_version and original_purchase_date which can be used to detect when a user purchased and therefore be used to guide logic around what users should get what features.

You can see more about 10 minutes in here: http://devstreaming.apple.com/videos/wwdc/2013/308xex4x6ybggtlw4ztv0sg5btp/308/308-SD.mov?dl=1 or if that link dies here: https://developer.apple.com/wwdc/videos/ and search for Using Receipts to Protect Your Digital Sales.

Ridgley answered 4/10, 2013 at 12:45 Comment(1)
I'm curious to know if you implemented the change to auto renewing subscription and whether or not you gave previous buyers (from when it was a paid app) a life time "pass" to the subscription. Also how did the users handle the switch and is this model successful? I'm thinking of moving an existing paid app to a WhatsApp model (free for x months, then 2.99 per year or something). – Dowitcher
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1

Chaning your business model like this is not very well supported by the App Store.

Your "poor mans" solution is probably one of the best of a poor set of options.

Another one would be to switch to a new app entirely (just a different bundle ID in practice). Anyone using your old app would have paid, regardless of which device they use. Anyone using the "new" app would need a subscription. Obviously you'd lose any reviews and possibly external links that you currently have.

Peppermint answered 12/10, 2011 at 13:47 Comment(3)
I suspected there was probably no good way to do this. The separate app idea is intriguing, though I'd probably have to roll out a few updates to the current users before doing something like that. Am I right in assuming that I could no longer release updates to the old users if I went with this solution (because I'd have to take the paid app out of the App Store)? – Byssinosis
You could do something like increase the price to $999 and remove all keywords, that way no-one will find or buy it. (Drinks on you if they do!) – Peppermint
This answer is now outdated see my answer – Ridgley

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