Comparison

Sentence vs ThankLock

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

Head to head
About

Sentence

This app introduces a unique approach to screen time management by requiring users to handwrite and scan a sentence to unlock blocked applications. It aims to create a deliberate pause between impulse and action, offering a robust system for managing digital distractions.

Highlights
  • Handwritten sentence scanning for app unlock
  • Block specific apps or categories
  • Customizable time-based schedules
  • Multiple block group configurations
  • Zen Mode to prevent app deletion
  • Choice of sentence prompts (enquiry, affirmation, literature, roasting, custom)
Features
Read full description

Most screen time apps are easy to dismiss. A tap. A passcode you set yourself. An exception you grant in three seconds. You already know this. You've tried them all. Sentence works differently. To unlock a blocked app, you write a sentence by hand — on paper — and scan it with your camera. Every time. No bypass. No exceptions. No "ignore for today." That moment of friction is the whole point. Most of the time, it's enough to make you put the phone down. HOW IT WORKS 1. Block any app or category — social media, streaming, games, news, anything. 2. Set your schedule — always on, a specific time window or a particular limit. 3. When you try to open a blocked app, you see a screen. Tap "Write Sentence." Sentence opens. 4. Write the sentence on paper. Hold it up. Scan it. The block lifts — for that session. 5. Tomorrow, you write it again. THE RITUAL Choose what you write each time you unlock: · Enquiry — why are you reaching for your phone right now? Answer honestly. · Affirmations — reinforce the person you're trying to become. · Literature — Seneca. Thoreau. Orwell. One line that reframes the moment. · Roasting — brutal honesty about what you're about to do with the next hour. · Custom — write your own sentence. Your commitment, your words. BLOCK ON YOUR TERMS · Block specific apps or entire categories · Time-based schedules — morning, night, all day, specific windows · Multiple block groups with different schedules and sentence types · Zen Mode — prevents deleting apps from your phone. Requires handwriting to disable. WHO SENTENCE IS FOR You've set screen time limits. You turned them off. You've tried grayscale mode. You adapted in a week. You've deleted the apps. You reinstalled them. You've tried willpower. It wasn't enough. Sentence isn't about willpower. It's about friction — a deliberate pause inserted between the impulse and the action. One sentence, written by hand, changes the calculus entirely. This is for people who are done with tricks that don't work. Access to Sentence features requires a paid subscription. Options include Monthly and Annual (with free trial). Manage or cancel anytime in your Apple ID settings. Terms of Use : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ThankLock

This app helps break phone addiction by requiring users to write a gratitude entry before accessing blocked apps. It provides a private journal of reflections and offers 30-minute access windows, fostering a positive habit instead of strict limitations.

Highlights
  • App blocking via Screen Time
  • Gratitude entry requirement
  • 30-minute access windows
  • Private digital journal
  • Streak tracking
  • No account or cloud sync
Features
Read full description

You already know you scroll too much. You pick up your phone to check one thing and resurface 45 minutes later. You've tried deleting apps. You've tried turning off notifications. It hasn't stuck. ThankLock takes a different approach: your phone is still yours, but to open a blocked app, you have to write something you're genuinely grateful for first. Not a timer. Not a cold-turkey block. A short moment of reflection — 40 characters minimum — and then you get 30 minutes of access. That's it. The unlock IS the intervention. There's no trick, no guilt, no punishment. Just a small pause that breaks the autopilot loop between boredom and your phone. — — — HOW IT WORKS Select which apps to block using Apple's Screen Time. When you try to open one, ThankLock intercepts it. Write a gratitude entry of 40+ characters. Access unlocks for 30 minutes. Your entries build into a real, private journal over time. No account. No cloud sync. No one reads it but you. — — — WHY IT WORKS The doom-scroll cycle is a dopamine loop — boredom triggers reach, reach triggers scroll, scroll resets the boredom clock. Interrupting that loop with a moment of genuine reflection rewires the reflex at the point it fires. Most screen-time tools try to limit access through friction or willpower. ThankLock replaces the reflex with a habit worth keeping. After a few weeks, users report that the journal itself becomes something they look forward to — not a gate to get through. — — — WHAT YOU GET - App blocking powered by Apple's native Screen Time (no VPN, no root access needed) - 30-minute access windows that reset naturally - Streak tracking and a running count of total thanks written - A growing private journal that lives only on your device - No account required. No subscription. No data collection. — — — ThankLock is for people who are honest with themselves about their phone habits and want one thing that actually changes behavior — not just measures it. If you're ready to trade mindless scrolling for something that compounds in a good direction, download ThankLock and block your first app today.

Screenshots

Sentence4 screens
ThankLock4 screens

Verdict

The call

Sentence and ThankLock both sit at 5.0 stars, but that hides the real split: 100% of ThankLock's written reviews are positive against 60% of Sentence's. ThankLock also leads on in-app purchases (none vs 5). Sentence's advantage is ratings volume (10 vs 1). On price, rating, ads and device support 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. Sentence sells 5 in-app purchases, starting at $1.99 per 7 days. ThankLock asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Sentence against 5.0 for ThankLock. That said, the two scores are not equally well evidenced: Sentence has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 60% of Sentence's written reviews are positive against 100% of ThankLock's.

Scorecard4 real differences · 6 level
Sentence versus ThankLock: the parameters behind the verdict, then further details
ParameterSentenceThankLock
PriceFreeFree
Rating5.0 (10 ratings)5.0 (1 ratings)
Positive reviews60.0% of reviews100.0% of reviews — better
Number of ratings10 — better1
Update frequencyEvery 8 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
DevicesiPhoneiPhone
Requires iOS18.017.6 — better
Further details — not scored
Size19 MB5 MB
Age rating4+4+
DeveloperDaksh KaushikMPR Ventures LLC

Customer experience

Sentence

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive60.0%
Neutral20.0%
Negative20.0%

ThankLock

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

5 purchases

Sentence

Subscriptions4
  • Weekly Premium$1.997 Days
  • Monthly Premium$4.991 Month
  • Annual Premum7 Days trial$9.991 Year
Show 1 more
  • Annual Premium7 Days trial$19.991 Year
One-time1
  • Lifetime Premium$34.99
None

ThankLock

No in-app purchases

Questions

Is Sentence free?
Sentence is free to download, with in-app purchases available.
Is ThankLock free?
ThankLock is free to download, with no in-app purchases.
Which has better reviews, Sentence or ThankLock?
Sentence and ThankLock are both rated 5.0 out of 5 on the App Store, from 10 and 1 ratings respectively.
Do Sentence or ThankLock have ads?
Neither Sentence nor ThankLock shows ads.

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