You can get free Rubies for:
- restoring the restaurant 🌹
- as a gift from the in-game characters 🙏
- collecting the daily reward;
- completing daily and weekly tasks in Jane's Blog;
- participating in the events;
- competing in tournaments;
- getting 'Sponsor bonus' (watching an ad in the shop);
- 'Rubies for Ads' (watching an ad in the Task menu);
- saving your game progress for the first time;
- Beating Hard and Super Hard levels.