DAS Calculator
FreeOffers In-App Purchases
1.13.3for iPhone, iPad and more
Age Rating
DAS Calculator Screenshots
About DAS Calculator
DAS, or "Disease Activity Score," is a measure of the activity of rheumatoid arthritis. Based on the work of the Department of Rheumatology at the University Medical Centre at Nigmegen (Netherlands), a validated tool (formula) was developed to evaluate and track Rheumatoid Arthritis disease activity. By measuring the tender and swollen joint counts (TJC & SJC respectively), CRP (c-reactive protein) and General Health, the DAS 28-4 gives an estimate of disease activity, while the DAS 28-3 uses just the TJC, SJC & CRP. Clinicians, rheumatologists in training, educators and researchers use this tool everyday and now you can have it readily available on your Apple mobile device.
The following formulas are free for you to try.
• DAS28-CRP
• DAS28-CRP (3 Variable)
• DAS/DAS28 Converter
You may use these forever and never be nagged. There are no ads. Enjoy!
If you like what you see, upgrade to the "Pro" version via one-time in-app purchase. This will unlock all remaining formulas, including:
• DAS28
• DAS28 (3 Variable)
• DAS-CRP
• DAS-CRP (3 Variable)
• Original DAS
• Original DAS (3 Variable)
• CDAI
• SDAI
• Cumulative and Weighed RAPID3®
The following formulas are free for you to try.
• DAS28-CRP
• DAS28-CRP (3 Variable)
• DAS/DAS28 Converter
You may use these forever and never be nagged. There are no ads. Enjoy!
If you like what you see, upgrade to the "Pro" version via one-time in-app purchase. This will unlock all remaining formulas, including:
• DAS28
• DAS28 (3 Variable)
• DAS-CRP
• DAS-CRP (3 Variable)
• Original DAS
• Original DAS (3 Variable)
• CDAI
• SDAI
• Cumulative and Weighed RAPID3®
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What's New in the Latest Version 1.13.3
Last updated on Sep 19, 2019
Old Versions
Support for iOS 13 dark mode.
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Version History
1.13.3
Sep 19, 2019
Support for iOS 13 dark mode.
1.13.2
Dec 6, 2018
Natively support the screen sizes of the latest iOS devices.
1.13.1
Nov 6, 2017
Support larger screen sizes.
1.13
Sep 16, 2015
[NEW] Built against iOS 9.
[NEW] Added score to numpad toolbar when numpad would otherwise block the score.
[FIX] Numpad would sometimes obscure text fields.
[REM] Fabric/Crashlytics has been completely removed. Crashes will only be reported via the iOS opt-in method (please opt-in).
[NEW] Added score to numpad toolbar when numpad would otherwise block the score.
[FIX] Numpad would sometimes obscure text fields.
[REM] Fabric/Crashlytics has been completely removed. Crashes will only be reported via the iOS opt-in method (please opt-in).
1.12
Aug 24, 2015
[NEW] Weighed RAPID3™ calculator.
[CHG] Existing "RAPID 3" calculator has been renamed "Cumulative RAPID3™."
[CHG] Modernized crash handling and networking code.
[CHG] Existing "RAPID 3" calculator has been renamed "Cumulative RAPID3™."
[CHG] Modernized crash handling and networking code.
1.11.1
Nov 11, 2014
Corrected a build setting that disabled optimizations for 64-bit iPhones, along with other bug fixes and graphic updates.
1.11
Sep 18, 2014
Re-written to support iOS 8 and the larger screens of the iPhone 6 and iPhone 6 Plus.
1.10.1
Dec 2, 2013
Updates the RAPID 3 variable labels to their industry-accepted acronyms. Special thanks to Dr. Laccheo of TheRheumatologyPodcast.com for the suggestion!
1.10
Nov 27, 2013
* [NEW] RAPID 3 (0 - 30 scale).
* [NEW] Toggle between millimeter and centimeter VAS in Settings.
* [FIX] Assorted visual glitches on iOS 7.
Please note: I will soon need to drop support for older versions of iOS so that new features and techniques can be added. If you're still using something that isn't iOS 7, bless your heart, but please upgrade. If you don't, you'll still be able to download older versions, including this one.
Thanks for your continued support!
* [NEW] Toggle between millimeter and centimeter VAS in Settings.
* [FIX] Assorted visual glitches on iOS 7.
Please note: I will soon need to drop support for older versions of iOS so that new features and techniques can be added. If you're still using something that isn't iOS 7, bless your heart, but please upgrade. If you don't, you'll still be able to download older versions, including this one.
Thanks for your continued support!
1.9.0
Sep 16, 2013
Rebuilt to natively support iOS 7.
1.8.0
Oct 16, 2012
[CHG] Theme -- pinstripes are out, blue is in. Let me know what you think via the "Submit Feedback" button in the "Settings" tab.
[CHG] VoiceOver support.
[ADD] iPhone 5 support.
[ADD] iOS 6 support.
[ADD] Colorize changes between activity labels (can disable in Settings).
[BUG] Numerous interface and speed improvements.
[REM] iOS 3.0 - 4.2.1 support.
[CHG] VoiceOver support.
[ADD] iPhone 5 support.
[ADD] iOS 6 support.
[ADD] Colorize changes between activity labels (can disable in Settings).
[BUG] Numerous interface and speed improvements.
[REM] iOS 3.0 - 4.2.1 support.
1.7.0
Jan 27, 2012
* [NEW] CDAI formula.
* [NEW] SDAI formula.
* [FIX] Correct subpixel alignment issue that caused some labels to appear blurry.
* [CHG] Remove shadow on labels in Slider View that looked blurry on retina display devices.
* [CHG] Many internal improvements to speed along future changes.
* [NEW] SDAI formula.
* [FIX] Correct subpixel alignment issue that caused some labels to appear blurry.
* [CHG] Remove shadow on labels in Slider View that looked blurry on retina display devices.
* [CHG] Many internal improvements to speed along future changes.
1.6.5
Oct 28, 2011
• [NEW] Specify CRP values in tenths precision (option available from the Settings tab).
• [CHG] Send Feedback option no longer needs to close DAS Calc and ope n Mail.
• [CHG] When typing with the keypad in Slider Layout, new values append, not replace.
• [CHG] When typing with the keypad in Slider Layout, sliders will automatically update with each keypress.
• [FIX] Long-press magnifier loupe in Slider mode no longer shows white text on white background.
• [FIX] DAS description disappeared for some users running iOS 4 with the Slider Layout.
• [FIX] Sliders should track slightly better in Slider Layout.
• [FIX] Regression where calculators would appear locked after purchasing until app was relaunched.
• [CHG] Remove iAds in free version (still limited calculator set without in-app purchase).
• [CHG] Other improvements and enhancements.
• [CHG] Send Feedback option no longer needs to close DAS Calc and ope n Mail.
• [CHG] When typing with the keypad in Slider Layout, new values append, not replace.
• [CHG] When typing with the keypad in Slider Layout, sliders will automatically update with each keypress.
• [FIX] Long-press magnifier loupe in Slider mode no longer shows white text on white background.
• [FIX] DAS description disappeared for some users running iOS 4 with the Slider Layout.
• [FIX] Sliders should track slightly better in Slider Layout.
• [FIX] Regression where calculators would appear locked after purchasing until app was relaunched.
• [CHG] Remove iAds in free version (still limited calculator set without in-app purchase).
• [CHG] Other improvements and enhancements.
1.6.0
Jun 22, 2011
* Restore Wheel Layout as the default layout for data entry. Shake the device to clear entries while in Wheel Layout.
* Add setting to toggle between Slider/Numpad Layout and Wheel Layout.
* Allow RAI values of 0.
* Correct score colorization for DAS scores.
* Assorted other fixes and improvements.
* Add setting to toggle between Slider/Numpad Layout and Wheel Layout.
* Allow RAI values of 0.
* Correct score colorization for DAS scores.
* Assorted other fixes and improvements.
1.5.1
Apr 15, 2011
Fine tune values by tapping the number and using the number pad to edit the entry. You can use this method instead of or in addition to the sliders.
1.5
Apr 4, 2011
* Completely redesigned interface.
* New disease activity indicator.
* Specify up to 44 swollen joints in original DAS formulas.
* C-reactive proteins now specified in whole numbers.
* Assorted bug fixes.
* New disease activity indicator.
* Specify up to 44 swollen joints in original DAS formulas.
* C-reactive proteins now specified in whole numbers.
* Assorted bug fixes.
1.1
Jul 5, 2010
Updated for iOS 4 and the iPhone 4.
On iOS 4, all calculators are unlocked in exchange for an iAd. If you previously purchased the "DAS Calculator Pro" In-App Purchase, you will not see iAds. Thank you for your support!
The "DAS Calculator Pro" In-App purchase on iOS 4 will now allow you to remove the advertisements, which may be desired if you wish to support development or use this program in your practice without your patients seeing advertisements.
On devices not running the free iOS 4 update, DAS Calculator runs the same as before, providing to you for free the two most common DAS formulas and allowing you the option to purchase 7 additional.
On iOS 4, all calculators are unlocked in exchange for an iAd. If you previously purchased the "DAS Calculator Pro" In-App Purchase, you will not see iAds. Thank you for your support!
The "DAS Calculator Pro" In-App purchase on iOS 4 will now allow you to remove the advertisements, which may be desired if you wish to support development or use this program in your practice without your patients seeing advertisements.
On devices not running the free iOS 4 update, DAS Calculator runs the same as before, providing to you for free the two most common DAS formulas and allowing you the option to purchase 7 additional.
1.0
Apr 6, 2010
DAS Calculator FAQ
Click here to learn how to download DAS Calculator in restricted country or region.
Check the following list to see the minimum requirements of DAS Calculator.
iPhone
Requires iOS 13.0 or later.
iPad
Requires iPadOS 13.0 or later.
iPod touch
Requires iOS 13.0 or later.
DAS Calculator supports English
DAS Calculator contains in-app purchases. Please check the pricing plan as below:
Unlock All Calculators
$1.99
