Qalb Terms of Use

Last updated: 19 October 2026

Qalb is a free, noncommercial Islamic companion app maintained as a personal hobby project by an independent developer. Questions about the app or these terms can be sent to yusuprd@icloud.com.

What Qalb provides

Qalb offers Quran reading and related tools, prayer-time calculations, Qibla direction, nearby mosque information and driving estimates, Islamic calendar events, gold and silver prices for the zakat calculator, tasbih, and local prayer reminders. It is for personal information and convenience, not a religious authority or a substitute for guidance from a qualified scholar or local authority.

Qalb is currently free. The current version has no paid features and does not process donations, payments, or purchases; there is no way to donate through the app.

Accuracy and availability

Prayer times are calculated on your device and depend on your location, date, calculation method, and settings. They may differ from those used by a local mosque or religious authority. Qibla direction depends on location and, when using the compass, device sensors and surroundings. Check the settings and sensor readings where accuracy matters.

Mosque listings and route estimates depend on third-party geographic data and routing services. Calendar dates and events may vary with local practice or observation. Gold and silver prices may be delayed, stale, or different from prices available to you; they are estimates for a calculator, not a valuation or a religious ruling about zakat. Check important information independently and seek qualified religious or financial guidance when needed.

Qalb and third-party services may change, be interrupted, or become unavailable. Features and external integrations may be changed or discontinued.

Third-party content and services

Qalb credits Quran.Foundation as the source of Quran data and identifies the recitation as Mahmoud Khalil Al-Husary, streamed from QuranicAudio mirrors. Attribution identifies a source; it does not itself grant permission to copy, bundle, distribute, or use third-party content. Quran text, translations, transliteration, recitations, maps, and service data remain subject to the rights and terms of their respective owners. The app also relies on external mapping, geocoding, routing, calendar, metal-price, hosting, caching, and update services. Their availability and terms are controlled by their providers. Their handling of requests is described in the Qalb Privacy Policy.

Using Qalb

Use Qalb lawfully and do not interfere with the app or its services. Do not use Qalb or connected services to violate another person’s rights or applicable law.

To the extent permitted by applicable law, Qalb is provided without a guarantee that calculations, third-party information, or services will always be accurate, complete, uninterrupted, or available. Nothing in these terms excludes or limits a right or liability that applicable law does not allow to be excluded or limited. Mandatory consumer rights remain unaffected.

Contact

For support or questions about these terms, email yusuprd@icloud.com.