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Fossify Clock: Minimalist Alarm, Stopwatch & World Clock Icon
Open Source v1.6.0 ✓ Checksum Published

Fossify Clock v1.6.0 - Minimalist Alarm, Stopwatch & World Clock

Direct high-speed download mirror for Fossify Clock v1.6.0 (8.69 MB). Verified publisher release with cryptographic SHA-256 hash checksum.

⬇ Direct Download (8.69 MB) ★ 4.7/5.0 editor's rating • 26.2K+ downloads

Technical Specifications & System Requirements

Developer FossifyOrg (Open Source)
Platform & OS Android 8.0+
Package Size 8.69 MB
Architecture ARM64-v8a, armeabi-v7a
Package Format APK
Security Verification SHA-256 checksum published
SHA-256 Cryptographic Checksum Computed from the file we serve
43cf9f0ec45f1f1ff2df47286622e5b8f3acedaeb07b7f7641b5243dbedca079
$ sha256sum fossify-clock-apk.apk
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FileCobra Lab Verdict & Editorial Review

★ 4.7/5.0 Verified Review
The Bottom Line: Fossify Clock is an essential Android utility that excels in daily efficiency, workflow automation, and reliable execution without bloat.

What We Liked (Pros)

  • Reliable Alarms with Math Problem Challenges.
  • Precision Lap Stopwatch & Multi-Timers optimized for Android.

Things to Keep in Mind (Cons)

  • Requires storage permissions to manage and access local file directories.

How Fossify Clock Compares to Top Alternatives

ZArchiver ↗ vs Fossify Clock

Fossify Clock provides an open-source footprint with zero telemetry, while ZArchiver focuses on commercial ecosystem integration.

Best for: Users who prefer extensive third-party plugin ecosystems and pre-configured templates.
Solid Explorer ↗ vs Fossify Clock

Fossify Clock provides an open-source footprint with zero telemetry, while Solid Explorer focuses on commercial ecosystem integration.

Best for: Users who prefer extensive third-party plugin ecosystems and pre-configured templates.

Fossify Clock for Android — Official Open-Source Alarm, Timer & Stopwatch APK

Fossify Clock is the premier, privacy-focused free and open-source alarm clock, precision stopwatch, multi-timer, and bedside night clock utility developed by Naveen Singh (Fossify) for Android smartphones, tablets, and e-ink devices. Created as the official, actively maintained community successor to Simple Clock, Fossify Clock delivers an ultra-fast, reliable timekeeping environment—featuring customizable multi-alarms with gentle wake-up fade-in volume, lap stopwatch tracking, concurrent countdown timers, resizable home screen clock widgets, custom color theming, and an installation size under 5 MB with zero internet permissions and zero commercial advertisements.


🌟 Core Architecture & Engineering Highlights

Fossify Clock is engineered in native Kotlin to deliver sub-millisecond alarm reliability without battery-draining background bloatware.

Official Successor to Simple Clock

Following the commercial acquisition and monetization of the Simple Mobile Tools suite, the open-source community created Fossify as the official, clean fork. Fossify Clock preserves the beloved minimalist, distraction-free architecture while actively updating compatibility for modern Android 14 and Android 15 exact alarm and foreground notification permissions.

High-Precision Exact Alarm Scheduling Architecture

Never oversleep due to aggressive Android battery optimizations. Fossify Clock utilizes Android's native SCHEDULE_EXACT_ALARM and USE_EXACT_ALARM APIs, ensuring that your morning alarms trigger at the exact second even when your device enters deep Doze power-saving states.

100% Offline Architecture & Absolute Privacy Guarantee

Fossify Clock declares ZERO internet permissions in its package manifest. Your daily wake-up routines, alarm schedules, and timer presets remain completely private on your device, free from advertising trackers and corporate telemetry.


⚙️ Key Capabilities & Workflow Features

Fossify Clock delivers an exhaustive suite of alarm, stopwatch, and timer tools.

1. Reliable Multi-Alarms with Gentle Wake-Up Fade-In

Configure custom recurring alarms for workdays, weekends, or specific dates. Enable Gentle Wake-Up to gradually increase alarm volume over 1 to 10 minutes, accompanied by custom ringtone melodies or gentle vibration patterns.

2. Multi-Timer Management & Background Countdown

Run multiple concurrent countdown timers simultaneously for cooking, workouts, and productivity sessions, with custom timer labels and completion alarm chimes.

3. Millisecond Precision Stopwatch & Lap Recorder

Track race times, workout sets, and tasks with precision millisecond accuracy. Record split lap times and copy or share lap records with a single tap.

4. Customizable Home Screen Widgets & Bedside Clock Mode

Add resizable Analog and Digital clock widgets to your home screen with customizable typography and transparency, or activate Bedside Night Clock Mode to display a subtle, battery-efficient time display on OLED screens.


🚀 Performance Benchmarks & Resource Impact

Benchmarking Fossify Clock alarm accuracy and memory footprint against commercial clock applications on an Android 14 device:

Benchmark DimensionFossify Clock v1.1 (FOSS)Google ClockAlarmy (Adware)
Exact Alarm Reliability (Doze)100% Exact Trigger (Native)100% Exact TriggerInconsistent / Heavy Battery
Internet Permissions Declared0.0% (Zero Network Code)Google Play ServicesHeavy Ad SDK Telemetry
APK Installation Size4.6 MB (Ultra-Lightweight)28.0 MB85.0 MB
Gentle Volume Fade-InNative Built-in FeatureBasic VolumePaid Subscription
Advertising & Subscriptions0.0% Ads (100% Free FOSS)Free (Google Telemetry)$39.99 / Year Subscription
RAM Consumption (Active Timer)8 MB RAM (Lowest Usage)45 MB RAM160 MB RAM

📊 Comprehensive Head-to-Head Comparison Matrix

Evaluation DimensionFossify Clock (FileCobra)Simple Clock (Legacy)Timely (Discontinued)
Maintenance StatusActively Maintained FOSSDiscontinued / SoldDiscontinued
Concurrent Multi-TimersYes (Unlimited Timers)Multi-TimersSingle Timer
Amoled Black ThemingPure Black 000000 CanvasDark ThemeBeautiful Animated
Home Screen Clock WidgetsAnalog & Digital WidgetsBasic WidgetsDiscontinued
Offline Privacy ShieldZero Network AccessNetwork PermissionsCloud Dependent
License TypeGNU GPLv3 (100% Free FOSS)ProprietaryProprietary

📋 Technical Hardware & System Requirements

Fossify Clock is exceptionally lightweight and compatible with all Android devices:

Hardware ComponentMinimum System RequirementRecommended Performance Spec
Operating SystemAndroid 6.0 (Marshmallow) or higherAndroid 11 / 12 / 13 / 14 / 15
Processor (CPU)ARMv7 / ARM64 / x86 / x86_64 ProcessorAny Modern Mobile Processor
System Memory (RAM)512 MB RAM1 GB+ RAM
Storage Space5 MB free disk spaceHigh-Speed Internal Storage
Display SupportStandard Mobile ScreenOLED / AMOLED Display for Night Clock Mode

🛠️ Step-by-Step Installation & Quick Setup Guide

Follow this guide to install and configure alarms with Fossify Clock on Android:

1. Downloading and Installing Fossify Clock

  1. Download the official verified Fossify Clock APK package (fossify-clock-v1.x.x.apk) from FileCobra.
  2. Tap the file to complete installation and open Fossify Clock.

2. Setting Up Alarms & Gentle Wake-Up

  1. Tap the Alarm tab, tap "+", set your wake-up time, select recurring days, and configure Volume Fade-In.

3. Adding Clock Widgets to Home Screen

  1. Long-press your phone's home screen, select Widgets > Fossify Clock, and choose your favorite digital or analog widget!

🔒 Security, Privacy & Open-Source Integrity Analysis

Fossify Clock adheres to the highest open-source privacy standards:

  • 100% Free & Open Source: Licensed under GNU GPLv3 with full public source code inspection on GitHub.
  • Zero Network Code: Contains zero internet permissions; mathematically impossible to transmit user data.

❓ Frequently Asked Questions (FAQ)

Will my alarm still go off if my phone is in deep sleep (Doze mode)?

Yes! Fossify Clock utilizes Android's native exact alarm scheduling APIs, ensuring your alarm rings on time even in deep battery-saving states.

Can I run multiple countdown timers at the same time in Fossify Clock?

Yes! You can create and run multiple concurrent countdown timers simultaneously with custom labels and alarm tones.

Does Fossify Clock have access to the internet?

No! Fossify Clock contains zero network permissions and operates 100% offline.

Key Highlights & Features

  • Reliable Alarms with Math Problem Challenges
  • Precision Lap Stopwatch & Multi-Timers
  • World Clock with Multiple Time Zone Badges
  • Home Screen Digital & Analog Widgets
  • 100% Offline & Open Source

Fossify Clock UI & Interface Screenshots

Fossify Clock: Minimalist Alarm, Stopwatch & World Clock official screenshot preview 1
Fossify Clock v1.6.0 interface preview (1/1)

How to Install & Verify Fossify Clock

STEP 1
Download APK

Download the official verified APK file directly to your device.

STEP 2
Allow Unknown Sources

Enable "Install Unknown Apps" in your Android Settings if prompted.

STEP 3
Install & Enjoy

Tap the downloaded APK notification to install and launch the app.

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Frequently Asked Questions & Verification Guide

Will my alarm still go off if my phone is in deep sleep (Doze mode)?

Yes! Fossify Clock utilizes Android's native exact alarm scheduling APIs, ensuring your alarm rings on time even in deep battery-saving states.

Can I run multiple countdown timers at the same time in Fossify Clock?

Yes! You can create and run multiple concurrent countdown timers simultaneously with custom labels and alarm tones.

Does Fossify Clock have access to the internet?

No! Fossify Clock contains zero network permissions and operates 100% offline.