Support
Practical information for the iPhone and Android versions of the app.
Frequently asked questions
The actions below take place in the app unless stated otherwise.
What can I calculate?
You can add a percentage, extract a percentage from a total, calculate the amount before a percentage, and choose a custom rate. The interest calculator shows the monthly payment, total paid, and total interest.
How do I change the VAT rate?
Open Settings > VAT Rate and choose a listed or custom rate. Tax rates vary by country and are not updated automatically, so verify the applicable rate with an official source.
Where are calculations stored?
Calculation history is stored on the device. You can delete a calculation, clear history, or choose Delete All Data in Settings.
Where can I download the app?
The iPhone version is available on the App Store. The Android version is available on Google Play. Availability may vary by country, device, and store account.
How do I restore a remove-ads purchase?
The remove-ads purchase and restore flow is available in the iPhone version only. Open Settings > Restore Purchases and use the Apple account that made the purchase. The Android version currently has no remove-ads purchase or restore flow.
How do I manage advertising privacy choices?
When Google requires the option to be shown, it appears under Privacy Options in Settings. See the Privacy Notice for details.
Can I rely on a result for a filing or financial decision?
Not by itself. The app is a calculation aid, and results depend on the values and rate entered. Verify important results, tax rates, and loan terms with the relevant authority or a qualified professional.
Still need help?
Open Settings > Contact in the app. The form sends your name, email address, and a message of up to 500 characters through EmailJS. You can also email app@omanski.co.il.
Include the device type, app version, and steps to reproduce the issue. Do not send payment details, identification numbers, or sensitive financial information that is not needed to handle the request.
- 1Open the app on your device.
- 2Open Settings and choose Contact.
- 3Describe what you tried, what you expected, and what happened.