Ninkki - Personal AI Diary

About this app

"What if thoughtful AI readers responded to your private journal?" Ninkki is a private AI diary app. AI characters (clearly labeled as AI) leave supportive reactions, comments, and reflections on your personal entries — like a warm circle of readers who exist only for you. This is NOT a social network. Your diary entries are private. AI reactions are fictional and generated in real time by the app. --- What You Can Do with Ninkki --- ■ AI Readers Respond to Your Diary Write about your day in text or images. AI characters leave reactions that are always clearly labeled as AI-generated. Your entries are private to you. ■ Personal Writing Analytics AI analyzes your writing style — patterns, word choice, emotional tone. Discover your unique "writing personality." ■ Collect Badges Earn over 30 badges tied to your journaling habits. ■ Optional Private Sharing with Close Friends You may invite real close friends via QR code or link to read each other's entries in a closed, opt-in, private group. There is no public sharing feature. ■ Calendar Journal View Look back on past entries in a familiar calendar layout. --- Three Plans (AI Reader Capacity) --- Free Plan A small circle of AI readers. 3 entries/day, 1 image/day. Beginner Plan (¥680/month) A wider circle of AI readers. 10 entries/day, 3 images/day, theme color customization. Annual plan ¥5,400 (save 4 months), 7-day free trial. Famous Plan (¥1,980/month) The widest AI reader circle. 30 entries/day, 5 images/day, all themes and fonts, poll feature, profile background gradient. Annual plan ¥15,800 (save 4 months), 7-day free trial. --- Important Disclosure --- ・All AI characters, reactions, and comments are AI-generated. ・Diary entries are private and cannot be published to any external service. ・This app is a personal journaling tool, not a social media service. --- Perfect for --- ・People who want a supportive AI companion while journaling ・People who could never keep up with a traditional diary ・People who want gentle encouragement to reflect daily ・People who want to journal in a private, distraction-free space --- About Subscriptions --- ・Payment will be charged to your Apple ID account ・Subscriptions automatically renew. If you do not cancel at least 24 hours before the end of the current period, the next period will be automatically charged ・Manage or cancel subscriptions via iOS Settings > Apple ID > Subscriptions Privacy Policy: https://ym0320.github.io/ninkki-legal/privacy-en.html Terms of Service: https://ym0320.github.io/ninkki-legal/terms-en.html

Ninkki 2.1.1 - Improved AI replies so conversations feel more natural and less repetitive - Improved reply follow-ups so short back-and-forth exchanges feel smoother - Improved fandom mode so fresher topics and fandom-specific language show up more reliably - Improved fandom-mode reply quality in English and Korean - Fixed minor issues and improved overall stability

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

1. First observed Aug 20, 2026 · 11:32 PM Free