Making daily life a little more convenient and fun
through iOS app development.

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LLM API Pricing & Cost Calculator

Compare API pricing and calculate real-world monthly costs for top AI models (GPT-6 Astra, Claude Opus 5.5, Gemini 3.8 Flash, DeepSeek-V4.1-Flash). Unlike basic calculators, our engine accurately simulates provider-specific Prompt Caching (Write surcharges, Read discounts, hourly storage fees) and long context tiers.

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Apps

Senryu AI Scoring アイコン

Senryu AI Scoring

AI critiques and scores your Senryu poetry

AI Note+ アイコン

AI Note+

Latest AI Summary, Transcription & Study Tool

Talk to Historical AI Greats - Chat with History アイコン

Talk to Historical AI Greats - Chat with History

Conversations with historical figures from around the world. Boost intimacy & build close bonds in this AI chat app!

Prime Rush: Math Time Attack アイコン

Prime Rush: Math Time Attack

Brain Speed Factorization Game

Blue Library アイコン

Blue Library

High-functionality Aozora Bunko Reader

Airport Code Memorization アイコン

Airport Code Memorization

Master the 3-Letter Codes!

Airport GO! アイコン

Airport GO!

Stamp Rally, Gacha Trips & Quizzes

Contact

Please contact us at the email address below.

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