Although very late now (3yrs?), there's been an English version of Brave Caravan in the Play Store that hasn't been put in QooApp.

English: https://play.google.com/store/apps/details?id=jp.co.beeworks.bravecaravan.en

play.google.com Brave Caravan - Apps on Google Play Brave Caravan features pixel art characters dashing through an exhilarating Action RPG setting. Enjoy flashy battles with simple 1 finger controls. Now featruing events with new characters and limited-time dungeons! ■Brave Caravan Features * Nostalgic and adorable pixel art characters and smooth animation * Exhilarating battles where you mow down tons of enemies with simple 1 finger controls * Hack 'n' slash: Defeat powerful enemies, upgrade your characters, get rare items * Treasure hunting: Find rare drops and weapons with special abilities * Devise your own perfect battle strategy using the infinite combinations of characters and weapons ■Story Princess Glinde leaves the kingdom with sword in hand to find her father and brother who have been missing since they left for an expedition to defeat monsters. Thus begins her journey to save the kingdom with the members of the mercenary caravan (Brave Caravan) she meets along the way. What awaits them at the end of their journey?

JP, the one available in QooApp: https://apps.qoo-app.com/app/4175

...Oddly enough YES, data transfer from the JP version to English IS COMPATIBLE! You might have to restart anew if you'd like to read on the story in English though.

Lastly...Last update of the game was 2017, unfortunately, but I still wish to spread out this word that there's been an English version of this.