Best Free App to Lock Your Phone at Night (No Subscription Required)

Most app blockers charge a subscription. Opal is $8/month. Freedom is $40/year. One Sec is $5/month. If you just want to lock your phone at bedtime, paying $60-100 per year feels like a lot for what should be a simple feature.

The good news: there are genuinely effective free options. Here are the best ones, ranked by how well they actually work at night.

1. SunBreak (iOS) — Best Overall Free Option

SunBreak is completely free with no subscription, no ads, and no in-app purchases. It is also the most feature-rich free option by a significant margin.

How it works: Set your bedtime, select which apps to block (or turn on nuclear mode to block everything), and apps are automatically restricted at bedtime. They unlock at sunrise based on your actual location, with an adjustable buffer of 0 to 120 minutes.

What you get for free:

• Hard app blocking — uses Apple's managed settings framework. No "Ignore Limit" button. Cannot remove apps from blocked list during bedtime.
• Nuclear mode — block every app category at once.
• Sunrise-based unlock — adapts automatically with the seasons.
• Wind-down routine — breathing exercise (3 guided cycles with animated visual), gratitude journal prompt, and a put-down countdown before bedtime. Starts 15-60 minutes before your set bedtime.
• Accountability partners — add up to 2 friends who get automatically emailed if you make 3+ bypass attempts. Shows cheat count and how late you stayed up.
• Sleep streaks — consecutive nights locked, flame icon at 7+ days.
• Morning recap — blocked app attempts, time locked, 5-star quality rating (Rough to Great).
• Weekly insights — wind-down completion rate, total blocked attempts, day-by-day sleep breakdown.
• Grayscale guide — built-in tutorial for enabling iOS grayscale mode at night.

Limitations: iOS only. Focused on bedtime blocking — no daytime focus sessions or all-day screen time analytics.

Why it is free: SunBreak is built by an indie developer who wanted to solve their own bedtime scrolling problem. There is no venture capital funding demanding subscription revenue.

2. iOS Screen Time (Built-In) — Free but Weak

How it works: Go to Settings > Screen Time > Downtime and set a schedule. During Downtime, only apps you whitelist are accessible.

What you get:

• Scheduled app restrictions
• Always-allowed apps list
• Free and built into iOS

Limitations: The "Ignore Limit" button defeats the entire purpose. One tap and the restriction vanishes. You can set a passcode, but since you set it yourself, you know it. Effective for about 2% of people who try it.

Best for: People with moderate self-control who just need a visual nudge. If you are reading this article, Screen Time probably already failed you.

3. Android Digital Wellbeing (Built-In) — Free but Weak

How it works: Settings > Digital Wellbeing > Bedtime Mode. Dims the screen, enables Do Not Disturb, and can enable grayscale mode on a schedule.

What you get:

• Scheduled grayscale and DND
• App usage reminders
• Free and built into Android

Limitations: Does not actually block apps. Grayscale and DND make your phone less appealing but you can still open everything. "Focus Mode" can pause specific apps, but it is easy to override.

Best for: Android users who want light friction. Not effective for serious bedtime scrolling habits.

4. AppBlock (Android) — Free Tier Available

How it works: Schedule profiles that block selected apps during set times. The free tier covers basic scheduling.

What you get for free:

• Scheduled app blocking
• Basic profiles
• Quick block feature

Limitations: Free tier is limited — advanced scheduling, usage tracking, and strict mode require premium ($5/month). The free version is a good starting point but you will likely hit the paywall.

The Cost of "Free" Paid Apps

Some apps offer free trials or limited free tiers, but the free experience is too restricted to be useful:

• Opal: Free tier does not include Deep Focus (the only mode that is hard to bypass). Basically useless for bedtime without premium.
• Freedom: Free tier gives you 7 sessions total, ever. Not 7 per month — 7 forever. After that, $40/year.
• One Sec: Free tier limits to 3 apps. If you use more than 3 distracting apps at night (most people do), you need premium.

Our Recommendation

If you are on iOS and want a free bedtime blocker, SunBreak is the clear choice. It is the only app that offers hard blocking, accountability partners, a wind-down routine, sleep tracking, and weekly insights — all completely free, with no asterisks or paywalls.

If you are on Android, your best free option is combining Digital Wellbeing's Bedtime Mode (for grayscale and DND) with AppBlock's free tier (for basic app blocking). It is not as polished as a dedicated solution, but it is free and covers the basics.

The most expensive app blocker is the one you do not use because you cancelled the subscription. A free tool you actually keep running every night will always outperform a paid tool you uninstall after the trial ends.