# How Nedaa works. · Nedaa

Docs · methodology, comparisons, datasets

# How Nedaa works.

Detailed write-ups on prayer-time calculation, alarm reliability, the Athkar dataset, our privacy stance, and how we compare to other Islamic apps.

* [ How to actually measure whether a Fajr alarm wakes you — a methodology A reproducible protocol for measuring whether prayer-time apps actually wake you up. Why most "alarm" features in Islamic apps are notifications. The technical difference between AlarmKit, critical notifications, and Android exact alarms. Methodology + Nedaa's implementation as the reference case. May 10, 2026 ](/docs/alarm-reliability-methodology)
* [ Daily Athkar — morning, evening, and your own Nedaa's Athkar feature uses the Hisn al-Muslim dataset for morning and evening remembrances, with reciter audio, a focus-mode reader, custom user-added athkar, and gentle habit tracking. Free, open source, offline. May 10, 2026 ](/docs/athkar)
* [ How complete is your athkar app? A benchmark methodology against Hisn al-Muslim A reproducible methodology for measuring how completely an Islamic app covers the Hisn al-Muslim dataset of supplications. Includes Nedaa's verified counts (267 supplications, 132 categories) and a template for community contributions. May 10, 2026 ](/docs/athkar-dataset-benchmark)
* [ How Islamic prayer-time apps differ on privacy, ads, and openness A category-level comparison of how Muslim prayer-time and athkar apps handle data collection, advertising, paywalls, and source transparency. Where Nedaa fits. May 10, 2026 ](/docs/comparison-privacy-ads-openness)
* [ A prayer alarm that actually wakes you — Fajr and Jummah alarms in Nedaa Nedaa's Fajr and Jummah alarms use real OS-level alarms — Apple AlarmKit on iOS 26+, native Android foreground alarm service — not notifications. Wake-up challenges, custom Athan sounds, Huawei build for non-GMS devices. May 10, 2026 ](/docs/prayer-alarm)
* [ Accurate prayer times — 23 calculation methods + Custom, offline, no ads Nedaa computes accurate prayer times anywhere in the world using the 23 named calculation methods exposed by the Aladhan API (Muslim World League, ISNA, Umm al-Qura, Karachi, Egyptian, Diyanet, JAKIM, Kemenag, and more), plus a Custom option for community-specific angles. Free, open source, works offline. May 10, 2026 ](/docs/prayer-times)
* [ Qada Fasting Tracker — count down your missed Ramadan fasts Nedaa's Qada tracker counts down your missed Ramadan fasts and reminds you to make them up before next Ramadan. Free, open source, no data collection, no selling. May 10, 2026 ](/docs/qada-tracker)