You can display the titration curve with any combination of mono to octavalent conjugated acid and base using this app.
You can also save the titration curve as graphic file into the external storage.
More than several ten data of acids and base are presented into this app. And you can add your data by yourself if you need.

In addition to the features of free version, there are three new features shown as follows.

Difference and new feature than free version:
1. Valences of acid and base
free version: only mono-, di-, and trivalent, total 288 kinds of acids & bases.
this app: up to octavalent(8th ionization steps), total 329 kinds of acids & bases are available
2. Display of color sample of pH indicators
free version: not available
this app: up to 57 kinds of pH indicator color samples are available.
3. Type of drawings
free version: 2 types (acid→base & base→acid titration curve)
this app: 3 types (acid→base & base→acid titration curve and ratio of acidic chemical species)