Twilight vs Simple Sleep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Twilight
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Twilight is the simplest sleep tracker you'll find that actually helps you build better sleep habits. Sleep apps tend to overwhelm you with data you don't need. Twilight does the opposite. It tracks when you sleep and when you wake up, and shows you exactly what's improving and what isn't. Consistency & duration are the only sleep variables you actually control, and the metrics are built around that. — THE METRICS Every number in Twilight is there for a reason: to help you understand your trend or keep you motivated to stay consistent. • Bedtime Rhythm: what % of nights you hit your target bedtime • Wake Rhythm: what % of mornings you hit your target wake time • Accuracy Score: how close your actual schedule matches your goal • 7-Night Moving Average: smooths out outliers so you see the real trend • Sleep Debt: cumulative deficit tracked over 30 and 90-day windows • Weekday Breakdown: see if weekends are quietly wrecking your rhythm • Duration Distribution: visualize how your nights cluster over time • Streak: consecutive nights on schedule; the number that makes you not want to break it When the streak hits 12 days and your bedtime rhythm reads 87%, staying consistent stops feeling hard. The data builds the habit. — FEATURES • NFC & QR Activation: tap a tag on your nightstand to start your session. No app-opening needed. • Control Center & Siri: toggle sleep and wake from Control Center or with a voice command • Wind-Down Timeline: a personalized 3-hour countdown with actions tied to your actual bedtime • Apple Health Sync: your sleep sessions sync to Apple Health automatically • Live Activity: session status on your Lock Screen and Dynamic Island • Export your full sleep history in CSV or Markdown anytime Coming soon: app & website blocking, full bi-directional Apple Health sync, smart alarm clock, automatic tracking, and more. Everything stays on your device. No account, no subscription. The source code is open and public.
Simple Sleep
Easily monitor your sleep patterns with a minimalist tracker. Understand your rest duration, bedtime, and wake-up times with simple one-tap logging. Set sleep goals and view comprehensive insights, all while prioritizing your privacy with on-device data processing.
- Effortless one-tap sleep tracking
- Comprehensive sleep insights and data
- Personalized sleep goal setting
- Battery-friendly design
- Live Activities and Dynamic Island integration
- Apple Health synchronization
- Privacy-first, on-device data processing
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Simple Sleep is the easiest way to track your sleep patterns without the clutter. Designed for simplicity and privacy, it helps you understand your rest with just one tap. Say goodbye to complex sleep trackers that drain your battery. Simple Sleep is designed to be lightweight and efficient, ensuring your phone lasts through the night. KEY FEATURES: Effortless Tracking Just tap "Sleep" when you go to bed and "Wake Up" when you rise. The beautiful dark interface (Dark Mode) is easy on your eyes at night. Comprehensive Insights Explore the brand new Insights tab to understand your habits better. View your average sleep duration, typical bedtime and wake-up times, and sleep regularity with detailed data spanning recent days, weeks, and months. Sleep Goals Set a personalized sleep goal and track your consistency. Easily monitor your progress and see exactly how many days you've successfully reached your target rest. Battery Friendly Our optimized tracking engine doesn't run heavy background processes. Your phone sleeps when you do. Live Activities & Dynamic Island See your sleep timer at a glance right from your Lock Screen or Dynamic Island (on iPhone 14 Pro and newer). Never wonder if you're still tracking. Apple Health Integration Seamlessly sync your sleep start and end times with Apple Health. Your data contributes to your overall health view without staying locked in our app. Track Interruptions Woke up in the middle of the night? Easily record wake-up events without stopping your session, giving you a clearer picture of your sleep quality. Privacy First We believe your sleep data belongs to you. Simple Sleep works entirely on-device. No accounts to create, no data tracking servers, and your data stays private. Download Simple Sleep today and start understanding your sleep better, simply. Terms of Use (EULA): https://madebyanji.com/simple-sleep/terms Privacy Policy: https://www.madebyanji.com/simple-sleep/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Twilight at none against Simple Sleep's 4. Twilight also leads on ads (none vs shown). Simple Sleep's advantage is update cadence (weekly vs every 3 weeks) and iOS requirement (15.1 vs 17.6). On price 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
Both are free to download. Simple Sleep sells 4 in-app purchases, starting at $2.99 per month. Twilight asks for nothing beyond the download.
Twilight ships an update every 3 weeks, Simple Sleep weekly. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | Twilight | Simple Sleep |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (5 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 23 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Rami Maalouf | ANJI, LLC |
In-app purchases
Twilight
No in-app purchases
Simple Sleep
- Super Simple Sleep (1 Month)$2.991 Month
- Super Simple Sleep (6 Months)3 Days trial$6.996 Months
- Super Simple Sleep (1 Year)7 Days trial$9.691 Year
- Super Simple Sleep (Lifetime)$16.99









