This is the support page for Roman Nums : Converter.
In Roman Numerals 2, the app will automatically convert numbers above 3999 using an archaic mode. In this mode, numbers appear with a bar over them (for example V and multiple the number by 1000. If you want to view these numbers as MMMM… then you can just tap on the II button on the bottom left.
By default, large numbers will appear with a bar above them (for example V), however this can be turned off while converting numbers, or changed in the Settings, where you can find the option to have large numbers appear as IↃↃ or MMMMM, or the default V.
“MCIV” and “I CIV” both mean 1104, but the first version is using the more familiar M to mean 1000, whereas the second version is using the archaic but more powerful version where Ⅰ means 1*1000 (and V means 5*1000, etc).
If you delete the app, you don’t need to buy the in-app purchases again, just tap on restore purchases and everything should reappear as before.