Press Kit
Everything you need to write about Fluid Friction. Grab a description, check the facts, and reach out if you want to dig deeper.
The short version
“Most screen time apps punish you for picking up your phone. Fluid Friction makes putting it down feel just as good.”
What Fluid Friction actually is
Fluid Friction turns every scroll into something you physically feel. Drag, and a wave of liquid rises from the bottom of the screen against your thumb. Past a threshold you set, a bubble forms at your fingertip and lifts off the screen, and only then does the feed move. A fast flick just bursts the bubble, which does not count, so there is no way to swipe past the friction without meaning it.
That's the core idea: don't block people, don't lecture them, don't make them feel guilty. Just add enough friction that every scroll becomes a choice you make on purpose. The wave isn't punishment, it's a speed bump with personality.
On Android it runs as an accessibility service that draws over the apps you pick. iOS does not let any app draw over another, so there the same physics lives in Fluid Friction's own browser for social sites, next to native app blocking built on Apple's Screen Time controls.
But the app goes way beyond scrolling friction. It's grown into a full digital wellness system: AI-powered coaching, behavioral pattern detection, app blocking, focus timers, NFC tags for physical triggers, a friends leaderboard, a rank system with daily quests, guided breathing and meditation. Set it as your default Android launcher and it becomes Fluid OS, a full home screen with a pegboard dashboard and snap-to-grid widgets.
Free to download, every tool free forever, built by two brothers.
How the friction works
Real-time wave physics
Not a canned animation. The wave responds to your exact drag velocity with momentum, buoyancy, and spring-damper mechanics, the same formula the app runs. It behaves like actual liquid on your screen.
You feel it, not just see it
Haptic feedback pairs with the visuals on both platforms, and it is on by default. The drag has a texture, and the moment the bubble lifts off has a kick. The multi-sensory approach makes the friction impossible to ignore.
The breakthrough moment
Drag past the threshold and a volumetric bubble separates from the wave and rises off the screen. It's designed to feel rewarding, a small “yes, I chose this” moment every time the feed moves.
92 collectible themes
Every theme changes how your wave and bubble look: gradients, animations, special effects rendered by 48 different effect engines. Themes run from free basics to Living themes (Mycelium, Kraken, Phoenix) that feel organic and alive.
Everything else it does
The friction is the hook. Here's everything underneath.
AI coaching with 9 personalities
Choose from Gentle Guide, Drill Sergeant, Nagging Mom, Data Nerd, Hype Beast, Chill Mentor, Sarcastic Bestie, Accountability Partner, or Pedro. Each coach has animated sprites, unique dialogue, and actionable suggestions that deep-link to specific settings. Powered by on-device Gemini Nano with cloud fallback.
Smart blocking that gets specific
Block Instagram Reels but keep DMs. Limit YouTube Shorts but not search. Feature-level detection targets the addictive parts of each app, not the whole app. Five blocking modes: hard block, intervention challenge, friction, scroll limit, or none.
Smart Friction scheduling
Friction adjusts automatically throughout the day. Four presets (Sunrise Sunset, Night Guard, Deep Work, and Custom), each with a 24-hour schedule. Set it once; friction ramps up during work hours and softens when you're winding down.
Friends, ranks, and daily quests
A health score (0 to 100) based on screen time vs. a 3-hour threshold you can change. Compare with friends via leaderboard. Climb 8 ranked tiers from Copper to Champion. Three daily quests keep you engaged. Full-screen particle effects celebrate rank-ups.
Fluid OS: a full home launcher
Set Fluid Friction as your default Android launcher and it becomes Fluid OS: a pegboard dashboard with snap-to-grid widgets, a full app drawer with search and folders, and 39 widget types across analytics, controls, and productivity categories.
NFC tags, spatial zones, and more
Tap an NFC tag to toggle a focus profile. Walk into your office Wi-Fi and friction adjusts automatically. Intervention challenges (breathing, math, password, reflection) create friction before opening blocked apps. Focus timers, Pomodoro, habits, guided breathing, meditation: it's a full wellness toolkit.
By the numbers
92
Visual themes
48
Effect renderers
9
AI coach personalities
12
Supported apps
39
Pegboard widgets
100
Dynamic app icons
$0
To download and to keep using
2
People built this
Supported apps: Instagram, TikTok, X (Twitter), Facebook, YouTube, Reddit, Threads, Snapchat, Pinterest, LinkedIn, Bluesky, Tumblr
What's paid? Fluid Pro, an optional subscription, unlocks the rest of the theme catalogue, dark mode, customisation, and unlimited cloud AI reports. Friction, blocking, scheduling, analytics, the launcher, and the coach with all 9 personalities are free forever, on-device AI included.
Safety and privacy
An overlay that sits on top of other apps needs to be trustworthy. Here's how we handle that.
Emergency off switch
Touch with 3 fingers to instantly kill the overlay. Always works, no exceptions. An independent safety watchdog also monitors overlay health and escalates through 4 levels if the main thread ever stops responding, ending in a forced take-down.
Banking apps protected
Banking, payment, password manager, authenticator, and crypto apps are permanently excluded, and the overlay never draws over them. It also hides during DMs, when the device is locked, and in any security-sensitive context.
Privacy by default
Analytics are disabled by default and require explicit opt-in. Even when enabled: we never collect which apps you use, your personal information, location, contacts, or screen content from other apps. All data retained for 90 days max. GDPR compliant. Consent withdrawable anytime.
Who we are
Fluid Friction was built by Manfred and Gustav Mjengwa, twin brothers who kept reaching for their phones and wanted a way to make that moment feel different. No venture funding. No growth team. No analytics dashboard optimizing for engagement. Every line of code is ours.
We built the thing we needed, then kept building because the problem turned out to be deeper than a wave animation. Screen time isn't just a scrolling problem, it's a habits problem, a social problem, a design problem. So the app grew into coaching, blocking, scheduling, spatial awareness, a full launcher, a wellness toolkit, and then a second app on iOS. Still just the two of us.
| Product | Fluid Friction / Fluid OS (launcher mode) |
| Platform | Android 7.0+ (SDK 24 to 35) and iOS 17+ (iPhone and iPad) |
| Category | Digital Wellness / Launcher |
| Founded | 2025 |
| Model | Free to download, every tool free forever. Fluid Pro is an optional subscription for cosmetics and unlimited cloud AI. |
| Founders | Manfred Mjengwa & Gustav Mjengwa |
| Codebase | 1,100+ Kotlin files on Android, plus a native Swift app on iOS |
| About | Meet the team → |
Awards & recognition
Fluid Friction is built by award-winning founders. The app and its two makers have received external recognition for social impact and for the product itself:
How it compares
Not a teardown, just context for what else exists and where Fluid Friction fits.
| Fluid Friction | Opal | one sec | |
|---|---|---|---|
| Approach | Friction on the scroll itself | App blocking | Pause prompt |
| Price | Free to download | Paid subscription | Paid subscription |
| AI coaching | 9 coach personalities | No | No |
| Themes | 92 | N/A | N/A |
| Home launcher | Full launcher (Android) | No | No |
| Feature-level blocking | Yes (Reels, Shorts, etc.) | App-level only | App-level only |
Use this copy
Copy-paste ready. Pick the length that fits your piece.
One sentence
Fluid Friction is a free Android and iOS app that makes scrolling harder on purpose: a wave rises under your thumb, a bubble forms and lifts off, and only then does the feed move.
Short paragraph
Fluid Friction takes a different approach to screen time. Instead of blocking apps or showing warnings, it makes the scrolling itself harder, putting a pause between each post. As you drag, a wave of liquid rises on screen; past a threshold a bubble forms and lifts off, and only then does the feed move. The app includes 92 visual themes, 9 AI coach personalities, feature-level blocking (target Reels while keeping DMs), Smart Friction scheduling, NFC-triggered profiles, a friends leaderboard with ranked tiers, and a full home launcher mode on Android. Built by twin brothers with no funding. Free to download, with every tool free forever; Fluid Pro is an optional subscription for cosmetics and unlimited cloud AI.
Full description
Infinite scroll was engineered to keep you going. Most screen time tools respond with punishment: blocking apps, showing guilt-inducing warnings, locking you out. Fluid Friction starts from a different premise: change how scrolling feels.
On Android the app adds friction to the scroll gesture itself in 12 social media apps including Instagram, TikTok, YouTube, Reddit, and X. As you drag, a wave rises from the bottom of the screen with real-time physics: momentum, buoyancy and spring-damper mechanics that make it feel like actual liquid. Past a threshold you set, a volumetric bubble separates from the wave and rises off the screen, and only then is the scroll passed through. A fast flick bursts the bubble and does not count. Every scroll becomes a conscious choice.
iOS does not allow one app to draw over another, so the iPhone and iPad version puts the same physics in its own browser for the social sites people lose time to, and pairs it with native app and website blocking built on Apple's Screen Time controls.
But friction is just the entry point. Fluid Friction has grown into a comprehensive digital wellness system: 9 AI coach personalities (from Gentle Guide to Sarcastic Bestie) powered by on-device Gemini Nano, behavioral pattern detection that identifies your vulnerability windows and doom-scroll triggers, feature-level blocking that can target Instagram Reels while keeping DMs friction-free, Smart Friction scheduling with four presets that adapt throughout the day, NFC tags for physical focus rituals, spatial profiles that adjust based on your Wi-Fi zone, a friends leaderboard with health scores, 8 ranked tiers with daily quests, guided breathing and meditation, a Pomodoro timer, and a habit tracker.
Set Fluid Friction as your default Android launcher and it becomes Fluid OS: a full home screen with a pegboard dashboard, 39 snap-to-grid widget types, an app drawer with search and folders, and 100 dynamic app icons that match your selected theme.
92 collectible themes, rendered by 48 different effect engines, let you personalize everything. Living themes like Mycelium, Kraken, and Phoenix feel organic and alive. A Discography collection recreates abstract album art. Seasonal themes rotate throughout the year. Three themes are free, and Fluid Pro, an optional subscription, unlocks the rest along with dark mode and unlimited cloud AI reports.
Fluid Friction was built by Manfred and Gustav Mjengwa, twin brothers who needed this app themselves. Over 1,100 Kotlin files on Android and a native Swift app on iOS. No venture funding, no growth hacks, and every functional tool free forever where the alternatives charge a subscription for the core.
Story angles we think are interesting
We don't want to tell you what to write. But these are the threads that excite us.
Friction as a design pattern, not a punishment
Every screen time app blocks or hides. What happens when you add resistance instead? The psychology of making something harder vs. making it impossible.
Two brothers vs. the subscription incumbents
No investors, no ads, no growth loops. A tiny team shipping a free app with more features than competitors charging premium prices. How and why.
From scroll friction to a full OS
It started as a wave animation. Now it's an AI coach, a launcher, a social platform with ranked tiers, and a wellness toolkit. The story of scope expanding because the problem demanded it.
On-device AI coaching that actually knows you
9 coach personalities running on Gemini Nano, on-device when your phone supports it. Behavioral pattern detection that identifies your doom-scroll triggers and vulnerability windows, then times nudges across 12 categories to the moment of real risk. On-device inference by default; the cloud fallback is opt-in.
Get in touch
We shipped the product, not the press tour.
Want to cover something different? Let's talk.
We typically respond within 24 hours.