PlanPicks Japan
An AI advisor that interviews Japanese consumers about their monthly data, call, and streaming habits, then ranks every major plan (ahamo 40GB, ドコモmini, UQ, Y!mobile, Rakuten, LINEMO) on real monthly cost and warns when a plan change would save money.
Japanese mobile subscribers frustrated by ahamo vs rival plan comparisons
- Personalized ranking across ahamo, ドコモmini, UQ, Y!mobile, Rakuten, LINEMO based on actual usage patterns
- Automatic alerts when rivals launch promotions or data bumps (like the ahamo 30→40GB increase)
- Family-mode that totals household lines and recommends shared or separate plans
- Throttle-day predictor that forecasts end-of-month slowdowns before they happen
Docomo just bumped ahamo to 40GB and ドコモmini to 6/12GB, and competitor UQ/Y!mobile will respond; consumers now have to re-compare 5+ plans and the math keeps changing every quarter.
Strong evidence of consumer interest: multiple dedicated ahamo vs ドコモmini comparison articles (dinomo, wileint, kurashi-media, Yahoo Experts) and Google Trends shows 1000+ searches for 'ドコモ ahamo' in JP.ahamoとドコモminiはどっちがおすすめ？料金・サービスを徹底比較 ↗「ahamo」と「ドコモmini」どっちがいいの？（マウス） - Yahoo!ニュース ↗
Crowded market: kakaku.com (price.com dominant), MoneyForward, Rakuten's own simulation, JP Tools (14 plans compared), and smaplan.com already offers a free AI-based 10-question diagnosis — direct AI-advisor competitor.スマートフォン料金プラン比較 おすすめの選び方 - 価格.com ↗スマホ料金診断｜AIが最安プランを無料で提案【2026年最新】 ↗スマホ料金比較シミュレーター | 最安プランを無料診断 - JP Tools ↗
All major simulators (price.com, MoneyForward, JP Tools, smaplan, Rakuten's own tool) are free and monetize via carrier affiliate/MNP links; consumers expect this tool category to be free, making direct monetization difficult.スマホの最新料金プランシミュレーション | マネーフォワード 固定費の見直し ↗料金シミュレーション（料金比較・診断） | Rakuten最強プラン ↗
Japanese carriers revise plans quarterly (Docomo just bumped ahamo to 40GB and ドコモmini to 6/12GB); UQ/Y!mobile respond in kind, creating a persistent re-comparison need every few months.ahamoとドコモminiはどっちがおすすめ？料金・サービスを徹底比較 ↗ドコモ miniとahamo（アハモ）の違いを徹底比較 ↗
Plan pricing is public data with established comparison APIs/feeds, and the interview-to-decision logic is straightforward LLM work, but ongoing maintenance of 5+ carrier plans and affiliate integrations requires sustained ops.スマホ料金比較シミュレーター | 最安プランを無料診断 - JP Tools ↗