--- title: "Arc Diary - Offline AI Journal - Reviews, Revenue and Downloads in Japan | Apple App Store" description: "Arc Diary is your private AI journal - offline, encrypted, and entirely yours. No account required. No cloud servers. No internet needed. Your words never leave your phone. In a world built on noise" --- # Arc Diary - Offline AI Journal — Japan ![Arc Diary App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/c0/d5/90/c0d590ec-b47b-0579-9f97-2bcd8fde847d/AppIcon-0-0-1x_U007ephone-0-1-85-220.png/434x0w.png) **Developer:** [Muthana Almaiah](https://apptail.io/developer/muthana-almaiah-LIjBmc) **Category:** Health Fitness **Rating:** N/A (0 ratings) **Price:** Free **Bundle ID:** com.mo.arc **Store:** Apple App Store **Country:** Japan **Version:** 1.1 (released 2026-07-09) **Original Release:** 2026-05-06 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/jp/app/app/id6761527846) **AppTail Page:** [https://apptail.io/app/arc-diary-offline-ai-journal-UHnA/japan](https://apptail.io/app/arc-diary-offline-ai-journal-UHnA/japan) ## Arc Diary Description Arc Diary is your private AI journal - offline, encrypted, and entirely yours. No account required. No cloud servers. No internet needed. Your words never leave your phone. In a world built on noise and surveillance, Arc Diary is the rare exception: a beautifully minimal writing space powered by advanced on-device AI, where your privacy is not a setting - it is the foundation. — KEY FEATURES • Chapters Don't just count your days, give them meaning. Arc Diary gently organizes your daily notes into titled "Chapters," naturally grouping your days into the actual moments and stories you are living through, Not just dates. Arcs. • Reflections Experience a journal that writes back. When you share a thought, the "Reflections" feature acts as a wise listener, replying with a beautifully written, calm insight that helps you see your own thoughts more clearly. • Absolute Privacy: Your words remain entirely yours. Arc Diary is powered exclusively by advanced on-device AI. No internet connection required, zero cloud servers and no mandatory accounts. What you write never leaves your phone. • Calm & Crafted Experience Fluid, cinematic interface. Every interaction is designed to feel like stepping away from the noise - not deeper into it. — Life is messy. Stories give it structure. Terms of Use: Privacy Policy: ## Arc Diary Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/b9/c8/3e/b9c83e09-7196-422c-d941-8f7b3e93eb0a/Slice_1.jpg/1290x2796.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c6/9d/a2/c69da2a3-258e-a810-fb68-6b0b1109702a/Slice_2.jpg/1290x2796.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/bd/8f/56/bd8f56e1-dcc2-fd4b-cc6f-a37aee0c4a08/Slice_4.jpg/1290x2796.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c9/1f/83/c91f83ad-4d80-052a-3d81-211724907510/Slice_3.jpg/1290x2796.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/6b/97/94/6b979476-1e57-74db-1189-3fd19690932a/Slice_5.jpg/1290x2796.png) ## Arc Diary In-App Purchases | Item | Price | |------|-------| | ARC Premium Yearly | ¥8.00 | | ARC Premium Monthly | ¥1.00 | ## Apps Similar to Arc Diary - [Reflectly - Journal & AI Diary](https://apptail.io/app/reflectly-journal-ai-diary-Bdm/japan) - [Fever Thermometer | Body Temp](https://apptail.io/app/fever-thermometer-body-temp-Gbv/japan) - [Posture Pal - Improve & Alert](https://apptail.io/app/posture-pal-improve-alert-ssT/japan) - [iTrainer: Diet & Exercise AI](https://apptail.io/app/itrainer-diet-exercise-ai-kmCb/japan) - [Technique Fitness](https://apptail.io/app/technique-fitness-JFVj/japan) - [(Not Boring) Vibes](https://apptail.io/app/not-boring-vibes-AQSm/japan) ## Arc Diary Available In - [Canada](https://apptail.io/app/arc-diary-offline-ai-journal-UHnA/canada) - [Ghana](https://apptail.io/app/arc-diary-offline-ai-journal-UHnA/ghana) - [Jordan](https://apptail.io/app/arc-diary-offline-ai-journal-UHnA/jordan) - [Japan](https://apptail.io/app/arc-diary-offline-ai-journal-UHnA/japan) - [Saudi Arabia](https://apptail.io/app/arc-diary-offline-ai-journal-UHnA/saudi-arabia) - [Ukraine](https://apptail.io/app/arc-diary-offline-ai-journal-UHnA/ukraine) - [United States](https://apptail.io/app/arc-diary-offline-ai-journal-UHnA/united-states) --- ## 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*