APPS

How they compare

Most prayer apps remind you. Most blockers let you quit, or charge for the mode where you can't. Here's how PrayerLock and StudyLock sit next to the apps people usually try first.

PrayerLock vs other prayer apps

PrayerLock also waits for your calls to end, and locks at your mosque's jamaat times or an imported masjid timetable.

StudyLock vs other focus apps

StudyLock also opens each session with the duas for seeking knowledge, and has water breaks, YouTube playlist mode and study rooms built in.

Prices and features are from each app's own site and its US App Store or Google Play listing, checked on 31 October 2026, and may have changed since. — means I couldn't confirm it. If something here is out of date, tell me and I'll fix it.

Install

Easiest: let your AI agent install it

Copy the prompt for the app you want and paste it into Claude Code, Codex, Antigravity or any coding agent on your computer. It reads the short installer first and tells you what it will do. Then it downloads the app from this site, checks it's exactly the file published here, and installs it. There's no "can't verify this app" warning to click through, and most agents ask before running each command.

Install PrayerLock on this computer for me. It's a free app from https://apps.abrarzahin.com/ that locks my screen at prayer time so I get up and pray.

1. Check whether this computer is a Mac, Linux or Windows.
2. Download the installer script and read it first, then tell me in two or three lines what it will do:
   - Mac or Linux: https://apps.abrarzahin.com/prayerlock.sh
   - Windows: https://apps.abrarzahin.com/prayerlock.ps1
3. Run it:
   - Mac or Linux: curl -fsSL https://apps.abrarzahin.com/prayerlock.sh | bash
   - Windows, in PowerShell: irm https://apps.abrarzahin.com/prayerlock.ps1 | iex
4. If a step needs my password (Linux asks for sudo) or you aren't allowed to run it, stop and give me the exact command to paste into my own terminal.
5. When it's done, tell me where it was installed and that I finish setup in the window that opens.

Install StudyLock on this computer for me. It's a free app from https://apps.abrarzahin.com/ that locks me in to my study sites and apps for a set time.

1. Check whether this computer is a Mac, Linux or Windows.
2. Download the installer script and read it first, then tell me in two or three lines what it will do:
   - Mac or Linux: https://apps.abrarzahin.com/studylock.sh
   - Windows: https://apps.abrarzahin.com/studylock.ps1
3. Run it:
   - Mac or Linux: curl -fsSL https://apps.abrarzahin.com/studylock.sh | bash
   - Windows, in PowerShell: irm https://apps.abrarzahin.com/studylock.ps1 | iex
4. If a step needs my password (Linux asks for sudo) or you aren't allowed to run it, stop and give me the exact command to paste into my own terminal.
5. When it's done, tell me where it was installed and that I finish setup in the window that opens.

On a phone? Agents run on computers, so use the Android download button instead.

Or paste one command yourself

Paste one line into Terminal on a Mac or Linux, or PowerShell on Windows. It downloads the same file as the buttons above, checks it's exactly the file published here, installs it and opens it. Because the download doesn't go through a browser, there's no "can't verify this app" warning to click through.

Want to read it first? Open prayerlock.sh, prayerlock.ps1, studylock.sh or studylock.ps1. Each is short and explains every step. On Linux it asks for your password once, for apt. On Android, use the download button above.

Mac, from the download button

macOS 13 or later · Apple silicon & Intel

1. Open the .dmg and drag the app onto the Applications folder.
2. Open it from Applications. macOS says Apple "could not verify" it, because these apps aren't notarized by Apple yet. Click Done, not Move to Trash.
3. Open System Settings → Privacy & Security and scroll to the very bottom. Next to "PrayerLock was blocked" (or StudyLock), click Open Anyway, enter your Mac's password, then click Open Anyway once more. You only do this once. Right-click → Open no longer works on macOS 15 and later.
4. A setup window opens. Pick your city in PrayerLock, or your browser, sites and apps in StudyLock, then save.

The app lives in your menu bar and starts by itself when you log in. To update, run the one-line command again, or download the new version and drag it over the old one.

Windows, from the download button

Windows 10 or 11, 64-bit

1. Open the downloaded Setup file.
2. Windows SmartScreen will say it protected your PC, because the installer isn't signed with a paid certificate yet. Click More info, then Run anyway.
3. Click through the installer. It installs for your account only, no admin password needed.
4. The setup window opens. Pick your city or your study sites and apps, then save.

The app lives in the system tray by the clock and starts when you sign in. To update, run the new Setup file over the old one.

Linux, from the download button

Ubuntu 24.04 or later, Debian 13 · 64-bit Intel/AMD

1. Open a terminal in your Downloads folder and run sudo apt install ./prayerlock_amd64.deb (or ./studylock_amd64.deb).
2. Open the app from your app launcher, set it up and save. It starts by itself when you log in from then on.
3. PrayerLock: click Preview Lock once. GNOME asks whether to let it capture keyboard shortcuts during a lock; choose Allow.

The icon sits in the top bar on Ubuntu and KDE. On plain GNOME, add the "AppIndicator and KStatusNotifierItem Support" extension to see it.

Android

Android 8 or later

1. Open the downloaded .apk. Android asks you to allow installs from your browser or Files app; allow it once.
2. Open the app. It walks you through each permission and says why it needs it.
3. On Android 13 or later, turning on the accessibility permission may say Restricted setting, because the app isn't from the Play Store. Open App info, tap ⋮ in the corner, choose Allow restricted settings, then turn it on.

To update, open the newer .apk and it installs over the old one, keeping your history.

Privacy

Both apps run on your own device. There's no account and no tracking. PrayerLock calculates prayer times offline. City search uses Apple's map service on a Mac and OpenStreetMap elsewhere, and the optional travel mode looks up your rough location online. StudyLock checks which site your browser is on, on your device only: on a Mac by asking the browser, on Windows and Android through the accessibility features, and on Linux by setting the browser's own site rules. Two things are optional and off until you turn them on: PrayerLock can add prayer times to your calendar, and a StudyLock study room shares your display name, whether you're in a session and when it ends, and today's minutes with the friends in that room, through abrarzahin.com.

Questions

Can I end a lock or a session early?

Not by yourself, that's the point. For real emergencies you can give someone you trust a guardian code in their authenticator app. If you're travelling or unwell, PrayerLock's menu has Pause Locks and I'm Excused, which work any time except during a lock.

What if a prayer time lands in the middle of a call?

PrayerLock waits while you're on a call, then locks as soon as it ends, up to 20 minutes later.

How do I uninstall it?

On a Mac, Windows or Linux, open the app's Settings and click Uninstall (on Linux, then run sudo apt remove prayerlock or studylock). On Android, uninstall it like any app. All of this is switched off during a lock or session on purpose.

Why can't I use Firefox or Arc with StudyLock on a Mac?

On a Mac they don't let other apps see which sites their tabs are on, so StudyLock hides them during a session like any other app. On Windows, Linux and Android, Firefox works.

Is it safe to let an AI agent install it?

The prompt asks the agent to read the installer and tell you what it does before running it. The installer is a short script on this site: it only downloads from here, checks the file's SHA-256 fingerprint, and installs the app the same way the download buttons do. Most agents ask before running a command, so you stay in control.

Is the one-command install safe?

It only downloads from this site, checks that the file's SHA-256 fingerprint matches the one published here, and installs it the same way the download buttons do. Nothing else on your computer changes, and you can read the script before running it.

Is it the same on every platform?

Nearly. Each system allows slightly different things: on Windows a killed app comes back within a minute rather than seconds, Android silences chat apps instead of quitting them, and Linux blocks sites with the browser's own "blocked by your administrator" page.

iPhone?

Not yet.