Celestial AI Agent vs No Sugar Diary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Celestial AI Agent
This app offers a unique approach to emotional well-being by acting as an intelligent companion that senses and understands your emotional state. It guides you towards stability and clarity through personalized support, integrating biometric signals and sound design into your daily life.
- AI emotional regulation
- Biometric signal integration
- Personalized emotional support
- Intelligent companionship
- Seamless daily integration
- Proactive healing environment
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It doesn’t simply track your state — it is a digital presence that can sense, understand, and actively participate in emotional regulation. This is not a conventional mental health app. Celestial is not a passively triggered conversation, nor a set of pre-scripted meditation courses. It is closer to an “in-presence” form of intelligent companionship — one that listens within the pauses of your emotions, the rhythm of your breath, and the spaces of silence, gently understanding what you’re going through and guiding you back toward stability and clarity with greater care and precision. Celestial is dedicated to providing personalized, intelligent emotional support. At the same time, it is an experiment in future human–machine relationships: an attempt to merge biometric signals with sound design to build a new digital empathy ecology — where technology is no longer just a tool, but part of your everyday emotional environment. Getting started is effortless. On the Pulse Island, simply tap “Switch to Meditation AI Agent” to begin. Technology as Emotional Ecology We believe that true healing should not exist only at moments of crisis. Ideally, it should be present like light, air, or music — quietly embedded into daily life, without preparation, without ritual overload, and without requiring you to be strong or disciplined every time. What Celestial does is transform healing from isolated actions into a sustainable environment: Your app is not just monitoring emotions. It is designing a space where humans and emotions can coexist. It actively regulates, accompanies, and repairs — gradually restoring your ability to sense and reconnect with yourself. Why Celestial: Low-Barrier Continuous Care for Modern Emotional Challenges In contemporary society, many people experience: Emotional burnout — prolonged stress without genuine emotional recovery Emotional isolation — constant connectivity with diminishing empathy Fragmented attention — emotional experiences broken into pieces, rarely fully felt or integrated Meanwhile, traditional approaches such as therapy or meditation often remain inaccessible to many due to high barriers, fragmentation, or lack of continuity. Celestial offers a more realistic path: proactive healing seamlessly embedded into everyday life. Terms of Use (EULA): https://docs.google.com/document/d/1vuUjfRfJa9AD1oPDz3Np96k0onv_AGQlIkgxPaYLw98/edit?usp=sharing Privacy Policy: https://docs.google.com/document/d/1_GvWQgB5KpmP78PX-gbPpFrtsb4j4OON9CxrK10YOH0/edit?usp=sharing
No Sugar Diary
This habit journal helps you track and reduce any urge or habit you want to change, from food cravings to screen time. Record your progress, feelings, and successes to stay consistent and regain control over your lifestyle choices.
- Customizable habit labeling
- Daily progress tracking
- Streak and total count monitoring
- Journal entries with text, image, and voice
- Shareable progress cards
- Optional offline AI companion
- Apple Watch data sync
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No Sugar Diary is a habit journal app that helps you record change and stay consistent. Here, "sugar" does not have to mean only food. It can also stand for any urge or habit you want to reduce, resist, or gradually quit. You can give it your own label, such as sugar, milk tea, staying up late, scrolling, gaming, or anything else you want to regain control over. You can use it to: - Create your own habit label - Record whether you stayed on track each day - Track streaks and total counts - Write down your feelings and changes - Look back on your progress over time - Generate shareable cards for each step forward - Add text, image, and voice entries - Optionally enable local offline AI companion replies - Sync selected progress data with Apple Watch No Sugar Diary is more like a personal record of staying with yourself. It helps you notice urges, track fluctuations, and keep every small success and every fresh start. Great for tracking: - Quitting sugar - Drinking less milk tea - Snacking less - Staying up less late - Spending less time scrolling - Playing fewer games - Any lifestyle habit you want to change gradually Notes: - This app is for personal habit tracking, self-observation, and daily encouragement. It does not provide medical diagnosis, treatment advice, or professional health guidance. - Your diary entries and records stay on your device by default. If you enable local offline AI, replies and generation are designed to run on your device whenever possible. - The AI feature requires decent device performance. It is only supported on iPhone 13 or newer, and iPad Pro, iPad Air, iPad mini, and iPad released in 2021 or later with at least 6GB of RAM. Not available on older devices. AI responses are for encouragement and light support only and are not medical, nutrition, or other professional advice.
Screenshots
Verdict
The clearest difference is price: Celestial AI Agent at Free against No Sugar Diary's $0.99. No Sugar Diary's advantage is in-app purchases (none vs 2) and ads (none vs shown). On review sentiment, 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
Celestial AI Agent is free to download; No Sugar Diary costs $0.99 up front. Celestial AI Agent sells 2 in-app purchases, starting at $5.99 per month. No Sugar Diary asks for nothing beyond the download.
Celestial AI Agent ships an update every 6 weeks, No Sugar Diary every 9 days. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.
| Parameter | Celestial AI Agent | No Sugar Diary |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.5 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 6 weeks | Every 9 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 754 MB | 483 MB |
| Age rating | 12+ | 12+ |
| Developer | 尔为 陈 | 林蓉 李 |
Customer experience
Celestial AI Agent
No Sugar Diary
In-app purchases
Celestial AI Agent
- Monthly Membership$5.991 Month
- Yearly Membership Subscription$59.991 Year
No Sugar Diary
No in-app purchases









