Comparison

PlainLock vs Justop

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

Head to head
About

PlainLock

Features
Read full description

PlainLock is a deliberately simple screen-time self-control tool. TWO WAYS TO SET A LIMIT • Schedule blocks: choose days and times, then the selected apps are blocked. • Daily limits: after the minutes you set are used, the apps stay blocked until tomorrow. • Shared group limits: put distracting apps in one group so switching apps cannot bypass the limit. • Group app limit: each group supports up to 50 apps, with a clear message when the limit is exceeded. • Cooling-off period: when you really need temporary access, wait 5 seconds, then unlock for the short duration you chose. LANGUAGES • Available in Traditional Chinese, English, Japanese, and Spanish. READ BEFORE YOU BUY • One purchase. No subscription. No in-app purchases. • Every rule stays on your device. The app makes no network requests and collects no app data. • This is a self-control tool, not a security tool. You can always remove restrictions by disabling its Screen Time permission in Settings. • Applying or clearing a block depends on iOS scheduling and can take one to two minutes. • Requires iOS 17.0 or later. Only iOS versions tested at release are supported; future compatibility and continuing updates are not guaranteed.

About

Justop

This app helps you focus by blocking distracting applications, categories, and websites during scheduled times. Once a blocking session begins, it cannot be easily interrupted, encouraging adherence to your set schedule. It offers a vacation mode for extended breaks and is designed with privacy in mind, making no network requests.

Highlights
  • Scheduled app blocking
  • Block apps, categories, and websites
  • Uninterruptible schedules
  • Vacation mode
  • Privacy-focused design
  • One-time purchase
Read full description

Block the apps you can't put down. Justop is a screen time app blocker that hides the apps, categories and websites you choose, either during the hours you set or once you've used them enough for the day. Once a block starts, there's no snoozing it. HOW IT WORKS • Set a schedule (days + time window) or a daily time limit (an amount of time per day). • Choose the apps, categories or websites to block. • A schedule shields them for the window you set. A time limit shields them once you hit your daily amount, until the next day. NO EASY WAY OUT A running block can't be edited, turned off or deleted. If you really need back in early, the unlock session takes four hours and you have to stay on the unlock screen the whole time. Leave the app and the timer starts over. VACATION MODE Taking a real break? Vacation mode lifts every block for 24 hours, up to three times a month. It can't be ended early. PRIVATE BY DESIGN No account, no analytics, no ads, no third-party SDKs. Justop makes no network requests. iOS hands it opaque tokens, so it never learns which apps you picked. PRICING Free for 2 days. After that, a one-time purchase unlocks Justop for good. No subscription. Justop uses Apple's Screen Time frameworks. iOS always lets you turn off its Screen Time access in Settings or delete the app, which lifts every block. Requires iOS 16 or later. Justop: the app blocker, screen time limiter and focus app for people who are done negotiating with themselves.

Screenshots

PlainLock4 screens
Justop4 screens

Verdict

The call

The clearest difference is price: Justop at Free against PlainLock's $2.99. PlainLock's advantage is in-app purchases (none vs 1). On update cadence, 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

Justop is free to download; PlainLock costs $2.99 up front. Justop sells 1 one-off in-app purchase. PlainLock asks for nothing beyond the download.

UpkeepUpdate frequency

PlainLock ships an update every 5 days, Justop weekly. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 7 level
PlainLock versus Justop: the parameters behind the verdict, then further details
ParameterPlainLockJustop
Price$2.99Free — better
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 5 days — betterWeekly
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Paid
DevicesiPhoneiPhone
Requires iOS17.016.0 — better
Further details — not scored
Size3 MB1 MB
Age rating4+4+
DeveloperChang Jhih YehMicah Woodring

In-app purchases

None

PlainLock

No in-app purchases

1 purchases

Justop

One-time1
  • Justop Full Access$4.99

Questions

Is PlainLock free?
PlainLock costs $2.99, with no in-app purchases.
Is Justop free?
Justop is free to download, with in-app purchases available.
Do PlainLock or Justop have ads?
Neither PlainLock nor Justop shows ads.
Which is updated more often, PlainLock or Justop?
PlainLock ships an update every 5 days, and Justop weekly. Most recently, PlainLock was updated on October 25, 2026 and Justop on October 31, 2026.

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