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                  Removing App Tracking Transparency from ckbk

   Adam Engst

   In this anonymous age of scale and target audience and eyeballs, it
   still pays to get personal. Last month, I received email from
   [1]Matthew Cockerill, who introduced himself in a manner similar to
   many TidBITS readers writing to me for the first time.

     As someone who started following TidBITS 30 years ago as a Mac-using
     PhD student in the early 90s, it was very cool to see one of your
     latest pieces beginning: 'I love cookbooks' ð

   Matt was referring to '[2]Use Live Text to Digitize Your Cookbooks' (5
   January 2023), and he wanted to tell me about his service [3]ckbk,
   which provides the full text of roughly 700 cookbooks to subscribers. I
   looped Jeff Carlson, who wrote '[4]Use the Web to Cook Your Books' (17
   March 2022) for us, into the conversation, and if all goes well, we'll
   have another article on the topic in a month or so. (A quick search of
   my email also revealed that Matt and I were both on a publishing world
   mailing list, where I learned that, after getting his PhD in molecular
   biology, he co-founded open-access science publisher BioMed Central and
   has gone on to consult on design and innovation.)

   But that's not what I wanted to write about today. After Matt reached
   out, I downloaded the ckbk app to my iPhone and was dismayed to
   discover that this compelling-sounding service from someone I'd
   probably enjoy a great deal in person seemingly wanted to track me.

   Whenever I see that dialog, I immediately become suspicious of the
   company and its product, and I always tap Ask App Not to Track while
   simultaneously muttering obscenities under my breath. I then take a
   screenshot of the app so I can easily document which companies have
   dubious business models and troubling ethics with a search for the
   image text 'Ask App Not to Track' in Photos. (The full list is in
   Settings > Privacy & Security >Tracking.)

   I replied to Matt's message with questions about the service and noted
   my disappointment in the app asking to track me. He replied:

     When it comes to the fact that the app asks to 'track''I hear where
     you are coming from but it's not as sinister as it sounds... Unless
     'tracking' is turned on, the app and app store can't even offer the
     most basic information'there's no way to know which of our
     promotional spending or partnerships have brought users to the ckbk
     app, and which have been a complete waste of money, for example. So
     in order to have some basic measure of the effectiveness of our
     marketing it seems we have no choice but to ask to track. It's
     frustrating that there's no distinction made by Apple between this
     and wider sorts of 3rd party tracking.

   That somewhat mollified me. Not enough to allow full-fledged tracking,
   but I understand the need to match click-throughs from ads or
   partnerships to actions. We did that all the time with Take Control
   Books to learn where a customer had come from but nothing else about
   them. But Matt's next email made me feel even better:

     Actually, thanks for the nudge on this'I've been doing some more
     digging and it turns out this is a rapidly moving space, and there
     are some new privacy-preserving ways that we can now track downloads
     which don't necessarily require us to ask for tracking or for users
     to opt in. So we are going to get onto the case and switch things
     around so that we no longer need to prompt new users with the
     offputting 'tracking' request...

   Two weeks later, it was done:

     Just wanted to let you know, we've taken your feedback on board, and
     have been able to eliminate 'tracking' from the ckbk app. (Actually
     we already weren't tracking, but we needed to update the metadata
     and remove certain libraries which cause tracking to be flagged.)

     It turns out this was a *lot* more difficult than expected, as there
     seems to be [5]a significant App Store bug which means that there is
     a Catch-22 and Apple will reject an app which no longer tracks
     because of 'non matching metadata' and there's no way to make it
     match until your new app is live. Creating that Catch-22. The only
     way past it being an appeal to the App Store. But we managed it...

   There's the testament to making personal connections. Matt's entirely
   appropriate introduction means that we're likely to write about ckbk,
   and my politely worded disappointment about tracking resulted in ckbk
   refactoring the app to remove the dialog, which will create a better
   experience for new ckbk users. Everyone wins.

   I also learned that Apple's App Tracking Transparency might be a bit
   more of a blunt instrument than I had previously thought. As you saw in
   the screenshot above, I still use a fair number of apps that have asked
   to track me, and perhaps they aren't as evil as I had believed. But I'm
   still not going to give them permission. And don't even get me started
   about the likes of Facebook and Instagram, which I won't let anywhere
   near my iPhone.

References

   Visible links
   1. https://www.matthew-cockerill.com/
   2. https://tidbits.com/2023/01/05/use-live-text-to-digitize-your-cookbooks/
   3. https://www.ckbk.com/
   4. https://tidbits.com/2022/03/17/use-the-web-to-cook-your-books/
   5. https://developer.apple.com/forums/thread/679585

   Hidden links:
   6. https://tidbits.com/wp/../uploads/2023/03/ckbk-tracking-scaled.jpg
   7. https://tidbits.com/wp/../uploads/2023/03/App-Tracking-scaled.jpg

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