// Blog
Free one sec Alternative for Android (Open Source) [2026]
You saw a one sec demo on iOS, loved the idea of a forced breath before Instagram opens, then went looking for it on Android and found one of three things. The Android app was there, but rougher than the demo you watched. Or it worked, but blocking more than one app meant paying about $20 a year. Or it was installed, working fine, and then your Samsung silently reset its permissions overnight and the pause just stopped firing. If you searched "one sec alternative android free" because of any of those, this is for you. Nudge does the same delay-before-opening pause, on Android, free and open source, with zero tracking.
I'll be straight about what one sec gets right, where the Android version actually falls down, and where Nudge is honestly a better fit. No trashing. The mechanic one sec popularized is genuinely good. The problem is access, not idea.
What one sec actually does
The core of one sec is one move: you tap a distracting app, and instead of it opening instantly, the screen takes over for a few seconds. It tells you to take a breath. Sometimes it makes you hold the phone still until the animation finishes. Then it asks, gently, whether you still want to open the app. Often you don't. The dopamine loop that made you reach for the phone has already half-dissolved by the time the breath ends.
That's it. That's the whole trick, and it works because it inserts a conscious choice into a movement that had become automatic. one sec calls it an "intervention." Researchers who studied it found people opened their target apps a lot less when this pause was in the way. The genius is that it doesn't block you. You can always continue. It just makes you decide on purpose instead of on reflex.
So the idea is sound. The question is whether you can get it, reliably, on the phone you actually own.
Why Android users struggle with one sec
Here's where it gets frustrating. one sec was built iOS-first, and it shows.
It's paid past one app. The free tier limits you to a single app, and one sec pro runs about $20 a year on subscription (or $2.99 a month) to unlock the rest. For one breathing screen, that's a hard sell, especially when the mechanic itself is simple. You're renting a pause.
The Android build lags the iOS one. Features land on iPhone first. The Android app has historically been the second-class citizen, and reviews reflect it.
The permission-reset bug. This is the big one. On Android, an app like this needs Accessibility permission to detect when you open Instagram or TikTok and slide the pause in front of it. On a lot of Samsung devices (and some other aggressive battery-optimizers), the system kills background apps and quietly revokes Accessibility access. You wake up, open Instagram, and nothing happens. The pause is gone. You have to dig back into Settings and re-grant permission, sometimes every few days. People have reported exactly this, and it turns a habit tool into a chore. A blocker that silently stops working is worse than no blocker, because you stop trusting it.
None of this is one sec being lazy. It's the reality of building Android digital-wellbeing apps on top of a permission model that fights you. But the result is the same: Android users want the one sec experience and keep hitting a wall.
Nudge: Free one sec Alternative Built for Android
Nudge is an open-source Android app blocker. It's free. Not free-tier-with-an-upsell. There is no pro version, no paywalled feature, no subscription. The whole thing is on GitHub, so you can read the code if you want to know exactly what it does.
The headline feature is the one you came for.
Delay-to-open with a breathing beat
Open an app you've put under Nudge and a pause screen comes up first: a short breathing beat, then a choice to open it or back out. Same conscious-choice moment one sec built its name on, and it's deliberately so, because the mechanic is the good part. Nudge's contribution isn't reinventing the pause. It's making the pause free, auditable, and native to Android.
Around the pause, Nudge stacks a few more friction tools for when a single breath isn't enough. Per-app daily time budgets are the one most people reach for: give Instagram 20 minutes a day, and when it's gone, it's gone. You can also bundle all your social apps into one group and govern them together, or set schedule rules so TikTok is off during work hours and after 11pm. If a whole app is too blunt, Nudge can kill just the doomscroll surfaces. YouTube Shorts, Instagram Reels, or the TikTok feed, while keeping the rest of the app usable. And there's a grayscale mode that drains the color out of your phone so it stops looking like a slot machine.
Why a pause works better than a hard block
A wall makes you want to climb it. Most hard blockers get uninstalled in week two because they feel like a parent, and the moment you really want the app you just turn the blocker off, which trains you to override it.
A pause is different. It doesn't say no. It says "are you sure?" and lets you answer. For impulsive, ADHD-pattern reaching, that gap between the reflex and the action is exactly where the habit lives. You're not fighting yourself. You're giving the slower part of your brain a few seconds to catch up. That's why the one sec mechanic landed in the first place, and it's why Nudge built its core around the same idea instead of a brick wall. If you want the longer version of why friction beats blocking for ADHD brains, there's a separate writeup on the best free ADHD app blocker for Android.
How Nudge's privacy model differs
Nudge isn't just cheaper. It's a different posture entirely.
Most of these apps are sitting on an intimate log of your attention. A tool that watches every app you open, where does that data go? With closed-source apps you have to trust a privacy policy and hope.
Nudge has no internet permission. Not "we promise not to send your data." The app literally cannot reach the network, because that capability isn't in the build. Your list of blocked apps, your usage counts, your schedules, all of it stays on the device. There's nothing to leak, nothing to sell, no server holding your attention log.
No account. No signup. No email. You install it and it works. And because it's open source, you don't have to take my word for any of this. The code is public. Anyone can check that the network permission isn't there and that nothing's being collected. That's a kind of trust a closed-source app, free or paid, can't offer. The honesty is verifiable, not promised.
one sec vs Nudge
| one sec | Nudge | |
|---|---|---|
| Delay-before-opening pause | Yes (the original) | Yes (same mechanic) |
| Platform | iOS-first, Android second | Android only |
| iOS support | Yes | No |
| Price | Free for 1 app, ~$20/yr for pro | Free, all features |
| Open source | No | Yes, on GitHub |
| Account | Optional (for cross-device pro sync) | None |
| Internet permission | Yes | None |
| Per-app time budgets | Yes | Yes |
| Block Reels/Shorts/TikTok feed | Not a listed feature | Yes |
| Grayscale mode | Not a listed feature | Yes |
| Samsung permission stability | Reported reset issues | Same Accessibility model, runs fully on-device with nothing to sync |
Two caveats. Nudge is Android only. If you live on an iPhone, one sec is your tool, full stop, and I'm not going to pretend otherwise. And Nudge uses Accessibility permission like every app in this category, so on aggressive battery-optimizing phones you may still need to whitelist it from battery optimization to keep it reliable. What Nudge avoids is any network or sync layer at all. Everything lives on the device, so there's nothing remote that can fall out of sync or quietly change under you.
How to set up delay-to-open in Nudge
Right now there's one live route, with two more on the way.
GitHub (available now). Go to the Nudge repo, grab the latest release APK, and install it. You'll have to allow "install from unknown sources" once, which Android prompts you through. That warning is generic, not a red flag. It shows up for anything not installed from the Play Store. If you'd rather build it yourself, the full source is in that same repo.
F-Droid (in progress). F-Droid is a trusted open-source app store for Android. Nudge has a merge request open to land there, so it isn't listed yet. Once it's accepted you'll be able to add Nudge from F-Droid like any other app and get updates automatically.
Play Store (in progress). A listing is pending review, not live yet. When it's approved, that'll be the one-tap option for people who don't want to think about sideloading.
Once installed:
- Open Nudge, grant Accessibility permission when it asks. This is what lets the pause appear over your apps.
- Whitelist Nudge from battery optimization. This is the step that prevents the silent-stop problem on Samsung and similar phones.
- Pick the apps you want a pause on. Instagram, TikTok, YouTube, whatever your weak spots are.
- Turn on delay-to-open. Optionally add a daily time budget or a schedule.
Done. Next time you reflexively tap Instagram, you get a breath and a choice instead of an instant feed.
FAQ
Is there a free one sec for Android? Nudge does exactly that. Delay-before-opening, free, unlimited apps, no subscription. one sec itself has a free tier capped at one app, and its pro version (which lifts that cap) is a subscription around $20/yr, so if you want the mechanic free and unlimited on Android, Nudge is the answer.
How much does one sec cost? one sec is free for a single app. To block more than one app or unlock the extra interventions you need one sec pro, which runs about $20 a year, or $2.99 a month. Nudge gives you the same delay-to-open pause plus time budgets, schedules, and grayscale at no cost.
Is Nudge really free forever? Yes. There's no pro tier, no subscription, no paywalled features, no ads. It's open source, so even if the project went quiet, the code stays public and the version you have keeps working.
Will it actually stop me, or will I just turn it off? Nudge uses a pause, not a wall, on purpose. You can always continue past it. The point isn't to make the app impossible, it's to make opening it a choice instead of a reflex. For impulse habits, the choice usually wins more often than a hard block you eventually disable in frustration. If a pause isn't enough, layer on a time budget or a schedule.
Is it safe to install an open-source app from GitHub? Open source is the safer option, not the riskier one, because the code is public and auditable. Nudge has no internet permission, so it can't send your data anywhere. The "unknown sources" prompt Android shows is standard for any non-Play-Store install, not a warning about Nudge specifically. If you'd rather skip sideloading entirely, wait for F-Droid or the Play Store listing.
How is this different from a regular blocker? Most blockers are walls. Nudge's core is a pause, which research and the popularity of the one sec mechanic both suggest works better for impulsive reaching. It also bundles time budgets, schedules, in-app feature blocking for Reels and Shorts, and grayscale. If you're comparing options broadly, here's a roundup of the best free app blockers for Android in 2026.
Get Nudge
Nudge is on GitHub now. Free, open source, no account needed. The F-Droid listing is in review and the Play Store submission is pending. If you're on Android and wanted one sec, grab the APK from GitHub and you're set up in under two minutes.