Sentence vs Life Engine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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)
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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/
Life Engine
This app transforms habit building into a rewarding experience by gamifying your routine. Earn energy, build streaks, and visualize your progress with a unique brutalist design. It offers smart reminders, custom habits, and motivational feedback to help you achieve your goals.
- Gamified habit completion with XP and streaks
- Beautiful brutalist design
- Offline-first and private data storage
- Unlimited habit categories
- Smart reminders and custom habits
- Motivational animations, haptics, and sounds
- Ready-made routine packs
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Make small habits stick with Life Engine, a habit tracker and routine planner for everyday progress. Start with one action: read a page, drink a glass of water, stretch, study or wind down. Choose your days, log what you complete and build a routine you can return to. YOUR DAILY ROUTINE • Plan habits for every day or selected weekdays. • Set optional habit reminders at times that suit you. • Organize habits into morning, evening, study or workout routines. • Use built-in timers for reading, focus or movement. PROGRESS YOU CAN SEE • Track habit streaks and completion history. • Earn energy points for completed habits and celebrate milestones. • See today's planned habits and completed actions together. • Keep your routine visible with home screen widgets. START FREE Track up to 5 habits. Core habit tracking works offline, with no account required to get started. No ads. MORE WITH PRO Monthly and annual Engine Fuel plans unlock more habits, advanced statistics, premium themes, extra icons and sounds, routine templates, CSV export, cloud sync, One Habit widgets and MAX, your AI coach. Ask MAX for a recap or suggestions for your routine. AI features need internet access. Cloud sync needs internet access and an account. Prefer a one-time purchase? Pro Lifetime includes the same Pro features with 30 AI generations per month. Engine Fuel subscriptions have no monthly AI generation cap. YOUR PACE, YOUR CHOICE Start free and explore paid plans when you want more. Available plans and prices are shown in your local currency before purchase. Pro Lifetime is a one-time purchase. Payment is charged to your Apple Account. Engine Fuel subscriptions renew automatically unless canceled at least 24 hours before the current billing period ends. Manage or cancel in your App Store account settings. Privacy: https://lifeengine.online/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: Sentence at 60% against Life Engine's 0%. Life Engine's advantage is monetization model (free with in-app purchases vs subscription) and device support (3 vs 1). On price, update cadence, ads and in-app purchases 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
Both are free to download. Sentence sells 5 in-app purchases, starting at $1.99 per 7 days and Life Engine sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Sentence ships an update every 8 days, Life Engine every 6 days. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.
| Parameter | Sentence | Life Engine |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) — better | — |
| Positive reviews | 60.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 8 — better | — |
| Update frequency | Every 8 days | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free with in-app purchases — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 99 MB |
| Age rating | 4+ | 4+ |
| Developer | Daksh Kaushik | Luc Mwansa Shimwansa |
Customer experience
Sentence
Life Engine
In-app purchases
Sentence
- Weekly Premium$1.997 Days
- Monthly Premium$4.991 Month
- Annual Premum7 Days trial$9.991 Year
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- Annual Premium7 Days trial$19.991 Year
- Lifetime Premium$34.99
Life Engine
- Engine Fuel Monthly$4.991 Month
- Engine Fuel Yearly$49.991 Year
- LifeEngine Pro$59.99








