--- title: "Ouat : AI Diary Journal - Reviews, Revenue and Downloads in Vietnam | Apple App Store" description: "Step into your story with OUAT (Once Upon A Time), the ultimate personalized journal app designed to help you capture life’s moments, big and small. Whether it’s the places you’ve visited, events you’" --- # Ouat : AI Diary Journal — Vietnam > #1 Chat Ask Second Brain ![Ouat App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/2c/5d/6b/2c5d6bdc-3867-1f19-ceda-367b2c9361a5/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png) **Developer:** [Duc Hoan Nguyen](https://apptail.io/developer/duc-hoan-nguyen-tjvb) **Category:** Lifestyle **Rating:** 5.0/5 (4 ratings) **Price:** Free **Bundle ID:** duchoan.dev.ouat **Store:** Apple App Store **Country:** Vietnam **Version:** 2.0.6 (released 2025-09-14) **Original Release:** 2024-08-28 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/vn/app/app/id6670152537) **AppTail Page:** [https://apptail.io/app/ouat-ai-diary-journal-Nsdr/vietnam](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/vietnam) ## Ouat Description Step into your story with OUAT (Once Upon A Time), the ultimate personalized journal app designed to help you capture life’s moments, big and small. Whether it’s the places you’ve visited, events you’ve attended, people you’ve met, or the things you love and aspire to, OUAT lets you track it all. With AI-powered reflection tools, OUAT not only helps you document your day but also enhances your mental health and wellness. Embrace daily habits, track your mood, and nurture your well-being with insightful reflections tailored just for you. OUAT is more than just a journal—it’s your companion on the journey to better mental health and self-discovery. Key Features: • Daily Reflection: Track your mood and experiences every day. • Personalized Insights: Get AI-powered reflections tailored to your journey. • Habit & Wellness Tracker: Build and maintain healthy habits. • Mood & Mental Health Support: Prioritize your mental well-being with personalized tips. • AI Chat: Engage in meaningful conversations that promote self-awareness. Start your journey with OUAT and turn your daily moments into a beautiful narrative. Term of use : Policies : Terms : ## Ouat Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/a9/3e/73/a93e7338-90b3-18ea-3464-30c3a66a3c06/78521c1e-6cb2-4720-a5fb-33573bc3c3bf_01.png/1242x2208.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/4d/f5/65/4df5656a-d9be-451b-1692-5a1ad3beaa98/b05b8a79-87c9-4e6f-a7e7-a5f743dce4d8_02.png/1242x2208.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/f4/4c/4f/f44c4fd0-e7c4-b7a1-d4c3-68ddbe25b4fe/07f2d4a3-6d4d-4911-b18a-f8580af2d68e_05.png/1242x2208.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/cd/c5/15/cdc51593-9945-9e50-6a43-1efda841ba2c/052eb0ad-76a0-438b-8f64-dc19b577293c_03.png/1242x2208.png) ## Ouat Rating Breakdown in Vietnam - 5 stars: 4 (100%) - 4 stars: 0 (0%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 0 (0%) ## Ouat Available In - [Vietnam](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/vietnam) - [Indonesia](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/indonesia) - [Türkiye](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/turkey) - [Russia](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/russia) - [Azerbaijan](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/azerbaijan) - [Belgium](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/belgium) - [Bulgaria](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/bulgaria) - [Brunei](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/brunei) - [Brazil](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/brazil) - [Belarus](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/belarus) - [Switzerland](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/switzerland) - [Chile](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/chile) - [Colombia](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/colombia) - [Cyprus](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/cyprus) - [Czechia](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/czechia) - [Germany](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/germany) - [Denmark](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/denmark) - [Dominican Republic](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/dominican-republic) - [Algeria](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/algeria) - [Ecuador](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/ecuador) - [Estonia](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/estonia) - [Egypt](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/egypt) - [Spain](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/spain) - [Finland](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/finland) - [France](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/france) - [United Kingdom](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/united-kingdom) - [Greece](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/greece) - [Hong Kong SAR China](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/hong-kong) - [Croatia](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/croatia) - [Hungary](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/hungary) - [Ireland](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/ireland) - [Israel](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/israel) - [India](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/india) - [Iceland](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/iceland) - [Italy](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/italy) - [Japan](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/japan) - [South Korea](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/south-korea) - [Kuwait](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/kuwait) - [Kazakhstan](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/kazakhstan) - [Lebanon](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/lebanon) - [Sri Lanka](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/sri-lanka) - [Lithuania](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/lithuania) - [Latvia](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/latvia) - [Madagascar](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/madagascar) - [Malta](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/malta) - [Mexico](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/mexico) - [Malaysia](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/malaysia) - [Nigeria](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/nigeria) - [Netherlands](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/netherlands) - [Norway](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/norway) - [Nepal](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/nepal) - [New Zealand](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/new-zealand) - [Peru](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/peru) - [Philippines](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/philippines) - [Pakistan](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/pakistan) - [Poland](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/poland) - [Portugal](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/portugal) - [Romania](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/romania) - [Saudi Arabia](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/saudi-arabia) - [Sweden](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/sweden) - [Singapore](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/singapore) - [United Arab Emirates](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/united-arab-emirates) - [Slovakia](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/slovakia) - [Senegal](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/senegal) - [Thailand](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/thailand) - [Taiwan](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/taiwan) - [Ukraine](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/ukraine) - [United States](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/united-states) - [Uzbekistan](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/uzbekistan) - [Slovenia](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/slovenia) - [Argentina](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/argentina) - [Austria](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/austria) - [Australia](https://apptail.io/app/ouat-ai-diary-journal-Nsdr/australia) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*