Comparison
Lerf vs Apple Screen Time
Try Screen Time first. It's free, it's already on your iPhone, and if its app limits hold for you, you don't need Lerf or anything like it. Lerf exists for what happens next: the night you tap “Ignore Limit” for the fourth time and realize the phone can't be the thing that polices the phone.
| Lerf | Apple Screen Time | |
|---|---|---|
| Price | $39 tag with app included · app alone $14.99/mo or $79.99/yr after a free trial | Free, built into iOS |
| The override | Strict sessions have no ignore button; Easy Mode requires a deliberate press-and-hold | Limits can be extended or ignored from the limit screen |
| How blocking starts | A physical tap on a tag, or a session you start on purpose | Limits and Downtime schedules you configure in Settings |
| What it shows you | Nothing — no dashboards, no streaks | Weekly reports, usage charts, and pickups |
| Family controls | Not a parental-control product | Full family setup with a parent passcode |
How Apple Screen Time works
Screen Time is built into iOS. Per Apple's documentation, you can schedule Downtime, set daily time limits for apps or categories, and review reports of your usage and pickups. For families, a parent can manage a child's limits behind a passcode. For your own device, the limits are self-administered — you set them, and you can extend or ignore them when they're reached.
Choose Apple Screen Time if…
You want free and zero-install — it's already on your phone. Your phone habits are mild, and a reminder-style limit is genuinely enough. You're managing a child's device: Screen Time's family controls with a parent passcode are the real tool for that job. You want usage reports and charts across your Apple devices.
Choose Lerf if…
You override your own limits — “Remind me in 15 minutes” has become muscle memory. You want the start of a block to be a deliberate physical act outside the phone, not a setting you negotiate with nightly. You want Strict Mode's shape: a session that runs to its timer with nothing on screen to override. You'd rather see nothing afterward — no weekly report — than be graded.
The honest take
Lerf is built on top of Apple's own Screen Time framework — it doesn't replace the system, it replaces the self-administered limits that never held. If Screen Time works for you, keep it and keep your $39. If ignoring it has become the routine, that's the exact moment this product was made for.
Common questions
Why not just use Screen Time?
You should — it's free and already installed. If its limits hold for you, you don't need Lerf. Lerf is for people who override their own limits: it starts strict, timed sessions from a physical tag, with no ignore button on the screen.
Does Lerf replace Screen Time?
No. Lerf is built on Apple's Screen Time framework. It replaces the self-administered limit-and-ignore loop with deliberate sessions, not the underlying system.
Does Lerf require Screen Time permission?
Yes. During setup you grant Lerf Screen Time access once — that's Apple's framework doing the actual blocking, locally on your device.
Is the Lerf app free?
It has a free trial, then $14.99/month or $79.99/year. The $39 Lerf Tag includes the app with no subscription.
Is Lerf a parental-control app?
No. Lerf is built for blocking your own distracting apps. For managing a child's device, Apple's Screen Time family controls are the right tool.
More on how tap-to-block works: NFC app blocking, explained.
Compare Lerf with: Brick · Opal · ScreenZen
Lerf is an iPhone app blocker designed to help people stop compulsive scrolling and put their phone down. It blocks selected distracting apps during timed sessions and can start a blocking session through an optional physical NFC accessory called the Lerf Tag.
Sources
- Apple Support — Get started with Screen Time on iPhone — accessed August 2026
Lerf is not affiliated with or endorsed by Apple. Product information may change; see each company's official site for current details. Comparison written by the developer of Lerf; we've tried to keep it honest, including where the alternative wins. Details checked August 2026.