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  1. v1.7.0iOS
    Bug fixes and performance improvements
  2. v1.6.0iOS
    Bug fixes and performance improvements
  3. v1.0.9Android
    ⭐ It is now possible to try the Premium version for free for 15 days.
    ⭐ Translations have been added in Portuguese, German, Italian, French, Dutch, Indonesian, Hindi, Russian and Japanese.
  4. v1.5.9iOS
    Optimized for iOS 18
  5. v1.5.8iOS
    Bugfixes and performance improvements. Amended rounding for Gallons to match rounding for Barrels.
  6. v1.5.7iOS
    Bugfixes and performance improvements. Updated some of the conversion factors.
  7. v1.5.6iOS
    Bug fixes and performance improvements. Updated calculations in the 'calculate' tab to more accurately reflect the 2009 standard.
  8. v1.5.5iOS
    Bug fixes and performance improvements.
  9. v1.5.4iOS
    Bug fixes and performance improvements.
  10. v1.5.3iOS
    Bug fixes and performance improvements
  11. v1.5.2iOS
    Bug fixes and performance improvements.
  12. v1.5.1iOS
    Bug fixes and performance improvements.
    Optimized for iOS 16.2
  13. v1.5.0iOS
    Bug fixes and performance improvements.
  14. v1.4.9iOS
    Bugfixes and performance improvements.
    Optimized for iOS 15.4
  15. v1.4.8iOS
    Bugfixes and performance improvements. Fixed a bug in the main calculator screen where when using 1980 Metric tables and using observed density as input, the app could under certain circumstances hang when going to density at 15, depending on density and temperature entered.
  16. v1.4.7iOS
    Bugfixes and performance improvements.
    Optimized for iOS 15.
  17. v1.4.6iOS
    - Added conversion of density in vac to density in air to Table 56 in Convert tab.
    - Fixed a minor bug in API conversion when using 1980 version of Imperial tables in the main calculator screen.
    - Fixed a bug where under certain conditions an API of zero was used when the actual value was not zero in the main calculator screen.
  18. v1.4.5iOS
    Bugfixes and performance improvements.
  19. v1.4.4iOS
    Updated privacy information.
  20. v1.4.3iOS
    Added a minus sign to the keyboard where this was missing: main calculator screen, converter screen, quantity editor and aromatics calculator.
  21. v1.4.2iOS
    Added new module for calculating aromatic products.
    Bug fix in main calculator screen for calculating Bbls at 60°F when density used is at 20°C.
    Modified the calculation of Special Applications, to obtain more accurate results with products such as MTBE. Added a field for density correction, so that chemical products can be calculated if no thermal expansion coefficient (alpha) is given.
    Added the following tables to the oil conversion screen: table 4, 8, 9, 10, 11, 12, 13, 14, 52, 56, 57, 58.
  22. v1.4.1iOS
    Updated all screens to improve viewing in dark mode. Minor bug fixes.
  23. v1.4.0iOS
    Various bug fixes, improved viewing in dark mode.
  24. v1.3.9iOS
    Fixes for dark mode and related bugs.
  25. v1.3.8iOS
    Bugfix.
  26. v1.3.7iOS
    Updated for iOS 13.

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