DevHabit vs R90 Sleepytime
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DevHabit
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Make Change a Habit, Make Persistence Simple DevHabit is a professional habit tracking app that helps you build good habits and break bad ones using science-backed methods for personal growth. Why Choose DevHabit? • Dual Management - Unique good/bad habit classification system for better psychological experience • Home Screen Widgets - 3 widget sizes for instant progress check without opening the app • Smart Analytics - Streak counts, completion rates, trend analysis to witness daily growth • Achievement System - Unlock exclusive badges to stay motivated • Personalized Reminders - Gentle reminders for good habits, warning alerts for bad ones Core Features Habit Management 24 beautiful icons to personalize your habits Separate tracking for good and bad habits Custom reminder times and frequencies Progress Tracking One-tap check-in with intuitive interface Calendar view for historical records Streak counts and cumulative statistics Home Screen Widgets Small: Display 2 important habits Medium: Show 4 habits with progress Large: Complete dashboard view Achievement System 8 carefully designed achievement badges Milestone rewards for consistency Unlock Pro feature previews Pro Features Upgrade to Pro for powerful advanced features: • Unlimited habits (Free version limited to 3) • Advanced analytics and trend charts • iCloud auto-sync - never lose your data • All widget sizes and styles • 100+ professional habit templates • Data export (PDF/Excel formats) • Custom themes and personalization • Priority customer support Special Offers • 7-day free trial of all Pro features • 50% off first month for new users • Annual subscription saves 28% vs monthly Let DevHabit accompany your growth journey. Start today and make change a habit! Privacy Policy: https://gist.github.com/mokong/a2b2a5ba51df445acb8f1c47b5ebb08e/raw Terms of Use: https://gist.github.com/mokong/4cb5c50f435fcf6b689478051fad47c1/raw
R90 Sleepytime
This app calculates optimal sleep and wake times based on scientific sleep cycles. It also offers guided meditations and soothing sounds to help you relax and fall asleep faster.
- Sleep cycle calculation
- Optimal wake time suggestions
- Soothing sleep music
- Guided meditation
- Anxiety relief
- Relaxation techniques
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R90Sleepytime:科学计算睡眠周期、助眠音乐放松、冥想安抚焦虑,一套完整睡眠解决方案 R90睡眠周期计算器: - 熬夜后担心起床没精力?R90睡眠法告诉你最佳起床时间。 - 明早必须7点起床?立刻算出今晚该几点睡才能满血复活。 - 睡多久都累?用R90睡眠法找到你的完美睡眠公式。 - 学霸的秘密:用R90睡眠法把闹钟变成“精力开关”,醒来就是满格状态 助眠: - 脑子静不下来?沉浸助眠音乐,快速切换至入睡状态 - 思绪纷杂无法入睡?听听助眠音乐。海浪/初春小雨/脑波/冥想/安静时光,伴随着放松的音乐安然入睡 冥想词: - 当你失眠时,可以尝试简单冥想。通过反复诵念冥想词,身心就会自动进入放松模式
Screenshots
Verdict
The clearest difference is price: DevHabit at Free against R90 Sleepytime's $0.99. R90 Sleepytime's advantage is in-app purchases (none vs 3) and update cadence (every 4 days vs every 4 months). On 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
DevHabit is free to download; R90 Sleepytime costs $0.99 up front. DevHabit sells 3 in-app purchases, starting at $2.99 per month. R90 Sleepytime asks for nothing beyond the download.
DevHabit ships an update every 4 months, R90 Sleepytime every 4 days. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.
| Parameter | DevHabit | R90 Sleepytime |
|---|---|---|
| Price | Free — better | $0.99 |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 4 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 72 MB |
| Age rating | 4+ | 4+ |
| Developer | 珍珍 张 | 志加 徐 |
In-app purchases
DevHabit
- Pro Monthly$2.991 Month
- Pro Yearly (Best Value)$19.991 Year
- Pro Lifetime$39.99
R90 Sleepytime
No in-app purchases









