Am I not able to transfer my study history from Mental Case 2 to Studies?

zeppo's Avatar


13 May, 2016 12:29 AM

I opted to import my Mental Case data to the iOS Studies app when prompted after installing it. But now I have 2080 notes due in Studies. I don't have any due in Mental Case 2 because I studied them all prior to the download of Studies, and I normally only have between 50 and 100 due each day.

I backed up my iPhone prior to downloading Studies, so I can revert and try again if I did something wrong, assuming it will allow me to. I turned on iCloud sync for the iOS Studies app, but have not synced it to the OS X Studies app (have yet to turn on sync for that app since I haven't been using it, pending waiting to move my data from Mental Case iOS to Studies iOS.

I haven't been using the Mental Case OS X app because of the sync problems with iCloud, but if the OS X app will let me transfer my study history to the Studies OS X, then I can probably get one sync to work from Mental Case iOS to OS X in order to pull that off. Let me know if there is some kind of way to move the study history over. Thanks

  1. Support Staff 1 Posted by drewmccormack on 13 May, 2016 08:49 AM

    drewmccormack's Avatar

    The sync history is definitely moved over, yes. You should be able to see that if you open up a note, and look at the Study History.

    There are differences in the scheduling system that were unavoidable to make Studies handle rescheduling better than Mental Case. (Basically, you can now switch back and forth between schedules, and you should return to a similar state rather than losing your study progress.)

    I thought we had addressed most of the issues during the beta testing, so it is surprising you have such a big difference. Perhaps you can open a note in both apps and look at the study history to see if you can see a big difference.

    One option is you send your data and I try to understand why the due status is so different. It may be an unavoidable effect of the changes in Studies, but could also be a bug.

    Kind regards,

  2. 2 Posted by zeppo on 13 May, 2016 04:15 PM

    zeppo's Avatar

    comparing a couple of notes in both iOS apps I do see scheduling has been transferred. Still examining.

    By the way... In Mental Case, if you view the library, to the right side it shows the total number of cards in each case or stack shown. The number due for each stack is written below the number of cards in the stack. In Studies, it shows the only the number of due cards, without showing the number of cards in the stack. I see where once I open the stack to view, it shows the total in the stack at the top along with the number due again. I prefer the Mental Case way of being able to see the number of cards in each stack without having to open it. Perhaps you can still do this in the Studies OS X app, which would be fine, for me since I hope to do my card management there if, God willing, the sync between Studies OS X and iOS will work for me (unresolved problems with Mental Case in that regard).

    I have used your app for years to study Spanish. Many cards I have are not scheduled to to be tested again for years. For instance, I am looking at the history of one that shows everything the same in both apps except the "month retention", 99% vs 98%, and the "year retention", 99% vs 96%. Studies shows the lower percentages, and schedules the cards sooner. So I guess the study history is being transferred, but the scheduling date is not transferred, and instead is determined and scheduled by Studies according to its new algorithm. So presumably, after I work through a ton of cards due, everything should be somewhat back to normal from then on.

  3. 3 Posted by zeppo on 15 May, 2016 03:10 AM

    zeppo's Avatar

    What file do I send to you?

          From: drewmccormack <[email blocked]>
     To: [email blocked]
     Sent: Friday, May 13, 2016 4:49 AM
     Subject: Re: Am I not able to transfer my study history from Mental Case 2 to Studies? [Suggestions #10344]
     #yiv8287556019 pre {width:92%;margin:10px 2%;padding:5px 2%;background:#efefef;border:1px solid #d6d6d6;}#yiv8287556019 blockquote {margin-left:0;padding-left:1em;border-left:5px solid #ccc;}

  4. 4 Posted by zeppo on 16 May, 2016 08:27 PM

    zeppo's Avatar

    I'm going to send you my data because today I got a popup from your app with the following message:

    "iCloud sync has been disabled due to an unexpected error.
    Try to enable sync again. If that fails, consider resetting the iCloud data."

    It was this kind of error I constantly got with the Mental Case 2 app, until I finally abandoned any hope of being able to sync data between desktop and iPhone.

  5. Support Staff 5 Posted by drewmccormack on 17 May, 2016 07:18 AM

    drewmccormack's Avatar

    Where did you get the message? In the Mac app?

    Do you ever force quit the app? That will cause that message for sure. A crash could also cause it, if you had one.

    Other than that, was the sync working OK?


  6. 6 Posted by zeppo on 17 May, 2016 04:18 PM

    zeppo's Avatar

    No, I have never used or turn on the sync for the mac Studies app yet. Don't plan on it until I resolve all the 2000 due notes on the iOS app, since I do all my studying on my iphone. I only use the mac for the ease of managing and editing the notes, (which is a very important feature to me that I have looked forward to benefiting from once again at some point.)

    I often turn on the iOS app while in the car so that I can knock out a few cards whenever I am stopped an waiting, as at a light. I had it on and picked it up for this purpose only to notice that this pop up occurred.

    My guess is that I lost my cell signal while it was in the middle of attempting to sync, Would this cause the sync to disable?

    Am I able to send you my data from the iPhone, or does it have to come from the mac app? I suspect that in your beta testing you hadn't tested for the case of a long time user that has hundreds of cards where the space of repetition has grown to years. The amount of actual data involved is quite small, around 130MB.

  7. Support Staff 7 Posted by drewmccormack on 17 May, 2016 04:35 PM

    drewmccormack's Avatar

    We did test reasonably large data sets. We also introduced selective sync for precisely the type of user that has a database that is too big to be practically synced. You can choose which stacks you want to keep synced on the Mac.

    Cell signal in itself should not trigger that message. Something more dramatic usually has to happen.

    It is possible I guess that the lost signal caused iCloud to choke and report that the user was logged out. In that case, it would give that message. Wonder if that could be it. Will investigate.

    BTW 130MB is large for a database. It is not like image data, which is very simple. A database has many relationships between the data, which are expensive to validate and traverse. 100MB is certainly a large database for an iPhone to handle.


  8. 8 Posted by zeppo on 18 May, 2016 03:32 AM

    zeppo's Avatar

    I see what you mean about database data vs image data. But I figured since others mentioned having GB of notes due to the images they used, that mine, which has no images, would be considered small. That said, I check the cloud and it is actually at 49.4MB. For some reason, my recollection was that I had 130MB, but I guess I was wrong there.

    How many MBs would be considered the threshhold for problem free iCloud syncing? I guess I could do multiple syncs each day, grouping together notes and cases into main cases whose data totals are below the threshhold.

  9. Support Staff 9 Posted by drewmccormack on 18 May, 2016 06:05 AM

    drewmccormack's Avatar

    The cloud data is stored differently than the data on the device, so can indeed be smaller. Hence the 49MB.

    I would think that could be synced up. Have you actually tried it? The one case you mention where the sync turned off sounds like it might be caused by the mobile network, and perhaps a glitch we can fix, rather than a data problem.

    I am receiving very few sync problems in my support, which is a world away from Mental Case. So it should be much better.

    Kind regards,

Reply to this discussion

Internal reply

Formatting help / Preview (switch to plain text) No formatting (switch to Markdown)

Attaching KB article:


Attached Files

You can attach files up to 10MB

If you don't have an account yet, we need to confirm you're human and not a machine trying to post spam.

Keyboard shortcuts


? Show this help
ESC Blurs the current field

Comment Form

r Focus the comment reply box
^ + ↩ Submit the comment

You can use Command ⌘ instead of Control ^ on Mac