Attenuation discrepancy btw online and app versions

Discussion in 'Recipe Editor' started by Brewer #56175, Jan 13, 2016.

  1. Brewer #56175

    Brewer #56175 New Member

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    I have come across this twice now, I get a different final gravity estimate when I sync a recipe with the app (iPhone version), than my recipe shows in the online version.

    For example, a recent recipe using Safale US-05 gave me a final gravity estimate of 1.4P online and then the sync'd version on my phone gave me 2.1P.

    I think this might be because the attenuation rate for US-05 is different online than in the app. The online version gives an avg. attenuation rate of 81% (this is inline with the data sheet from Fermentis: http://www.fermentis.com/wp-content/uploads/2012/02/SFA_US05.pdf), but the app gives an avg. attenuation rate of 75%.

    Shouldn't both attenuation rates be the same?
    Is one more realistic than the other?

    Thanks for any clarity on this!

    ps - I also just noticed that the app did not sync the beer style (Berliner Weisse incase you were wondering why the final gravity estimate was so low). Maybe these are just bugs that are already planned to be fixed?
     
  2. BrewersFriend_Matt

    BrewersFriend_Matt New Member

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    Hey - thanks for the feedback! Yes, we're aware of both the gravity and style discrepancies between the web and mobile versions, and it's definitely high on our list of updates to make. Thanks!
     
  3. Brewer #56175

    Brewer #56175 New Member

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    Thanks for the reply.
    And thanks for developing great brewing software!
     
  4. BrewersFriend_Matt

    BrewersFriend_Matt New Member

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    Thank you for supporting it! Seriously - we couldn't do it without you guys.
     
  5. jeffpn

    jeffpn Well-Known Member

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    No, you wouldn't do it without us guys! :lol:
     
  6. BrewersFriend_Matt

    BrewersFriend_Matt New Member

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    :lol: true enough... I guess we absolutely COULD.
     
  7. Brauhaus Ten.Fifty.

    Brauhaus Ten.Fifty. New Member

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    Which was correct? The app calculation or web calculation (specifically for gravity)?

    Many thanks,

    Martin
     
  8. BrewersFriend_Matt

    BrewersFriend_Matt New Member

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    Hey Martin - at this point the web calculation for gravity is slightly more accurate.

    - Matt
     
  9. Brauhaus Ten.Fifty.

    Brauhaus Ten.Fifty. New Member

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    Hi Matt,

    Appreciate the reply and info - many thanks! And as others say: great site / app.

    All the best,

    Martin
     
  10. BrewersFriend_Matt

    BrewersFriend_Matt New Member

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    Thanks Martin (and everyone else, of course)!
     
  11. PZ

    PZ Member

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    I posted an observation long ago that has not yet been addressed, and it is related to this thread so I thought I would remind the dev team of the issue:
    When a custom attenuation is entered, the FG is adjusted for the mash temperature -- it does not use the attenuation straight off. I would like to see the simple calculation for FG made using the number I type in. If people want to see what the algorithm comes up with they should have that as a separate option. It drives me crazy to type in 80% attenuation and see something else.

    Thanks!
     

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