Comparison

Lerf vs oooLog

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Lerf

This app helps you regain control of your screen time by blocking distracting applications during specific periods. It offers flexible blocking modes and ambient sounds to support relaxation, study, or sleep. The focus is on protecting your time and peace without intrusive tracking.

Highlights
  • Block distracting apps
  • Set custom session timers
  • Easy and Strict blocking modes
  • Ambient soundscapes
  • Designed for minimal interaction
  • Protect personal time
Read full description

10 minutes on your phone turned into 2 hours. Again. Do Not Disturb stops notifications. Lerf turns your phone back into a tool that supports your goals. HOW IT WORKS Choose apps, set a schedule (optional) or tap start and distracting apps lock down. No streaks. No account. Nothing to check. Flexible Mode lets you end blocking early. Strict Mode keeps your apps blocked until the timer (or schedule) ends. FOR Focus: work or study without negotiating with your phone. Sleep: less scrolling before bed. Family time: set boundaries around distracting apps so family time means actually being together. PRICING Lerf is free to download. Full access is $12.99 a month or $39.99 a year after a 7-day free trial. Cancel anytime in Settings. WHY LERF Our smartphones are our greatest tools and our worst distractions. Lerf's mission is to turn smartphones back into tools, helping people take back control of their time, attention, and technology. PRIVACY Lerf uses Apple's Screen Time framework. Your app choices and usage stay on your phone. Lerf never sees them, and there's no account to create. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lerfapp.com/privacy

About

oooLog

Features
Read full description

Your workout starts when you walk in the door. ooolog automatically logs your workouts using the places you save — your gym, your yoga studio, the climbing wall. Arrive, and the session starts. Leave, and it's saved. No timers, no start buttons, no forgetting. HOW IT WORKS • Save the places where you work out • ooolog quietly watches for arrivals using geofences — no GPS tracking of your movements • Every visit is logged with its duration, automatically • Your history builds itself: streaks, time totals, and your most-visited places BETTER WITH FRIENDS Follow your workout buddies and see the time they're putting in at the places you share. A little friendly accountability goes a long way. PRIVATE BY DESIGN ooolog only monitors the specific places you choose — never your location in general. Your workout history stays on your device and syncs only what's needed to share with people you approve. Sign in with Apple, no ads, no data sold. Ever. Getting started takes one minute: sign in, save a place, and forget the app exists. That's the point.

Screenshots

Lerf3 screens
oooLog4 screens

Verdict

The call

The clearest difference is in-app purchases: oooLog at none against Lerf's 5. Lerf's advantage is update cadence (every 5 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Lerf sells 5 in-app purchases, starting at $3.99 per 7 days. oooLog asks for nothing beyond the download.

UpkeepUpdate frequency

Lerf ships an update every 5 days, oooLog fortnightly. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
Lerf versus oooLog: the parameters behind the verdict, then further details
ParameterLerfoooLog
PriceFreeFree
Rating5.0 (15 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings15 — better—
Update frequencyEvery 5 days — betterFortnightly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhoneiPhone
Requires iOS17.0 — better18.0
Further details — not scored
Size14 MB5 MB
Age rating4+4+
DeveloperGrant HergenroederOpenings Corp

In-app purchases

5 purchases

Lerf

Subscriptions5
  • Lerf Weekly$3.997 Days
  • Lerf Monthly$12.991 Month
  • Lerf Monthly7 Days trial$14.991 Month
Show 2 more
  • Lerf Annual7 Days trial$39.991 Year
  • Lerf Yearly14 Days trial$79.991 Year
None

oooLog

No in-app purchases

Questions

Is Lerf free?
Lerf is free to download, with in-app purchases available.
Is oooLog free?
oooLog is free to download, with no in-app purchases.
Do Lerf or oooLog have ads?
Neither Lerf nor oooLog shows ads.
Which is updated more often, Lerf or oooLog?
Lerf ships an update every 5 days, and oooLog fortnightly. Most recently, Lerf was updated on October 31, 2026 and oooLog on November 5, 2026.

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