Privacy. Transparency. Nicegram.
In 2021 Nicegram reveals main idea of the app once again - always respect your users, as it done by Telegram
Any updated to iOS 14.4 device will now show you that
Data Not Collected
by Nicegram on the AppStore page.
(It was always stated in Privacy Policy btw.)
For more technically inclined users, there’s source code available for inspection and contribution.