RestoCalc is a quick calculator for change in euros when paying in euros and leva.

RestoCalc helps end-users who pay, as well as cashiers, waiters and merchants to calculate change in euros when paying in a combination of euros and leva after January 1, 2026. The application is simple, fast and convenient for work on the go, in the store, at the cash register, including offline.

Main advantages
• Faster service and fewer errors when returning change
• Simultaneous entry of the amount due in EUR and/or BGN
• Always clear display of the change in euros
• “Full-screen” display for a quick and clear overview of the change
• Calculation history (optional) for control and tracking + option to record location
• Works offline — no need for the internet
• Light and intuitive UI, optimized for fast work

How it works
1. Enter the amount due in euros or leva - the other currency is calculated automatically.
2. Enter how much you pay (in euros, in leva or in a combination of both currencies).
3. RestoCalc calculates the change in euros and can display it in full screen.
4. Optional: the calculation data is saved in History.

Key features:
• Dual currency: input in euros or leva, automatic conversion and change in euros
• Ability to work without typing with quick selection of denominations (banknotes/coins) with quick buttons
• Full screen result visualization (Full Screen)
• Calculation history (turns on/off from Settings)
• Ability to save location and display on a map where and when exactly the calculation was made (optional when activated in settings)
• Offline work and low resource consumption

Advertisements and consent (GDPR/UMP)
• RestoCalc uses Google AdMob to display short interstitial ads.
• Ads are displayed unobtrusively - after a certain number of completed calculations.
• A consent form (UMP) may be displayed upon first launch according to EU/EEA privacy requirements. You can opt out of personalized ads or change your choices later.
• Details are described in the Privacy Policy.

Who is it suitable for:
• For any buyer or user in Bulgaria who pays in both currencies
• Shops, restaurants, bars, cafes, kiosks, payment points
• Cashiers, waiters, couriers and anyone who returns change daily
• Entities that accept payment in euros and/or leva

Permissions
• Location (optional): used only if you turn on Location History to mark a calculation location. The application works without this permission. Locations are stored locally on your device and are not shared
• Network access: for loading ads and diagnostics. The main functionality (calculation) works offline.

Privacy
• All calculation data, history and locations are stored only locally and are not sent anywhere
• The application does not collect personal data beyond what is described in the policies of the advertising provider (Google AdMob).
• Ad and diagnostic data may be processed in accordance with Google policies.

Important
• RestoCalc is an auxiliary tool for calculating change. It is not a banking/financial service and does not perform monetary transactions.
• When working with mixed payments in euros and leva, check the currency logic and local requirements in your location.
• For the most accurate work, enter the amounts correctly; the application displays change in euros.

Support and feedback
• If you have questions, suggestions or find a problem, write to us via the contacts in the application/site. Your feedback helps us improve RestoCalc.