Slide Rule Pico sliding calculator app for iPhone and iPad

Pocket calculators, especially the HP-35 scientific calculator (1972), have caused the extinction of the analog computing tools (slide rules).
Recent studies on parallel computing are bringing back the analog instruments. For example: we want to buy the products in Europe with American currency.
On a slide rule we set the exchange rate of Euro / US Dollar. We can calculate the price of the first product at the fixed rate (simple operation for any digital calculator and for any analog calculator).
and in real time, we can calculate the price of all other products we want to buy (parallel computing task, impossible for any digital pocket calculator).
Slide Rule Pico is an analog and digital calculation tool, allowing parallel computing and train our brain to mental calculation.

Contents:

1. The slide rule Pico composed of three parts
1.1 Part 1: the body with 4 stairs (K, A, D, L)
1.2 Part 2: the slide bar with 3 scales (B, Cl, C)
1.3 Part 3: the monitor with the reference hairline and digital numbers.

2. Operations
Multiplication, division, 2nd power, square roots, logarithms, antilogarithms, 3rd power, cube roots.

3. Users Manual

4. Languages
English, French, German, Italian, Spanish.