Touch RPN for iOS: Flavors

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This app implements many flavors of RPN calculators. Currently, there are 7 of them. Each flavor is offered in two fashions: free (with ads) and paid (without ads).

Press ON to select the active flavor. To enable a greyed-out flavor, just touch it and confirm the purchase.

Figure 1: RPN flavors menu, accessible by touching ON. The price of purchasable flavors varies for each country and will be shown in your local currency.

Figure 2: RPN flavors menu, second half, accessible by touching ON. The price of purchasable flavors varies for each country and will be shown in your local currency.

Figure 3: Financial flavor

Figure 4: Advanced financial flavor, with algebraic mode

Figure 5: Financial flavor with Black-Scholes functions

The Black-Scholes flavor is "apocryphal" — there has never been a physical calculator with this layout. Check out this page to discover how it works.

Figure 6: Scientific flavor (related to the discontinued 11C)

Figure 7: Advanced scientific flavor (related to the discontinued 15C)

Figure 8: Basic scientific (related to the discontinued 10C)

Figure 9: Computer programmer‘s flavor (related to the discontinued 16C)

Fast swap of flavor

If you have purchased two or more RPN flavors, you can activate the fast swap buttons. They are shortcuts to exchange between e.g. financial and scientific flavors without having to open the Settings panel.

Figure 10: Advanced Scientific RPN flavor with fast swap buttons enabled.

The fast swap shortcuts can be configured via "Settings" > "Fast swap buttons". At most three flavors can be enabled to have shortcuts, and at most two shortcuts are shown on the main screen.

Figure 11: Settings subpanel where the fast swap buttons are chosen.

The fast swap buttons are completely disabled when any free flavor is in use.