# EasySeikyu かんたん請求-見積書·請求書·領収書 — Invoice App for your Japan biz > All-in-one invoicing app for creating business documents easily. (iPhone/iPad app by 瑜 邹.) - Source: https://appshunter.io/ios/app/easyseikyu/id6739726837 (this page in markdown: same URL + `.md`) - Developer: [瑜 邹](https://appshunter.io/developer/1755132025) - Category: Business, Utilities - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 123 MB - Languages: American English, French (France), German (Germany), Japanese, Korean, European Portuguese, Chinese (Simplified, China), European Spanish, Thai, Chinese (Traditional, Taiwan) and 1 more - Released: 2025-01-04 - Data updated: 2026-08-24 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/easyseikyu/id6739726837/reviews.md ## What is EasySeikyu かんたん請求? Easy, professional, and ready to use. Kantan Seikyu is an all-in-one invoicing app that anyone can use to create beautiful business documents with ease. Whether you’re a freelancer, small business owner, or side-business operator, you can create professional invoices, quotations, receipts, purchase orders, and delivery notes within minutes — no registration required. Key Features Create and manage quotations, invoices, receipts, purchase orders, and delivery notes. Multi-language and multi-currency support for international business. Fully compliant with Japan’s Qualified Invoice System (Invoice制度) and Electronic Bookkeeping Law. NEW: Invoice report – instantly view statistics and export data. NEW: Custom email templates for smooth client communication. NEW: Keyboard shortcuts for faster desktop operations. Manage multiple bank accounts and optimize transfer fees (supports international transfers). Sync data securely via cloud drive or work fully offline. No account or sign-up required — start using it immediately. Ideal For Freelancers and self-employed professionals. Small businesses, startups, and international traders. Users who need invoice compliance (Invoice制度対応). Those managing side businesses (副業). Entrepreneurs who value simplicity, privacy, and speed. ## Key features - Create invoices, quotations, receipts, purchase orders, delivery notes - Multi-language and multi-currency support - Japan Qualified Invoice System compliant - Invoice reporting and data export - Customizable email templates - Manage multiple bank accounts - Google Drive sync or offline mode ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | プラス年間プラン | $17.99 | per year | | プラス月額プラン | $1.99 | per month | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/easyseikyu/id6739726837/reviews.md ### 4/5 — コスパ良し *2026-03-09* 使いやすい ## Frequently asked questions about EasySeikyu かんたん請求 ### What business documents can EasySeikyu create? EasySeikyu allows you to create professional invoices, quotations, receipts, purchase orders, and delivery notes. It is designed for ease of use, enabling quick generation of these essential business documents. ### Does EasySeikyu support international business? Yes, EasySeikyu offers multi-language and multi-currency support, making it suitable for international business transactions. It also facilitates international transfers through its bank account management features. ### Is EasySeikyu compliant with Japanese invoicing regulations? Yes, EasySeikyu is fully compliant with Japan’s Qualified Invoice System (Invoice制度) and Electronic Bookkeeping Law. This ensures your business documents meet legal requirements in Japan. ### Can I use EasySeikyu offline? Yes, you can work fully offline with EasySeikyu. Alternatively, you can sync your data securely via Google Drive for backup and access across devices. ### How does EasySeikyu handle payments and subscriptions? EasySeikyu is free to download and use, with optional subscription plans available for enhanced features. The 'プラス' plans offer monthly ($1.99) and annual ($17.99) options. ### What are the benefits of the 'プラス' subscription for EasySeikyu? The 'プラス' subscription likely unlocks advanced features or removes limitations present in the free version. Specific details on these benefits would be available within the app's subscription section. ### Does EasySeikyu have ads? No, EasySeikyu does not contain advertisements. The app focuses on providing a clean and uninterrupted user experience for creating business documents. ### How often is EasySeikyu updated? The latest version of EasySeikyu is 1.9.2, and it was last updated on June 2, 2026. This indicates a commitment to regular updates and improvements. ## Version history (last 5 releases) ### 1.13.2 — 2026-08-18 ■ New: AI Link (desktop only) ・AI apps such as Claude Desktop can now read your EasySeikyu documents, clients and items. Ask for revenue summaries or a list of overdue invoices in plain conversation. ・Any data change proposed by AI goes into an approval queue. Nothing in your data changes until you review and approve it in the app. ・AI can also draft emails such as payment reminders. It never sends them — review the draft and send it yourself from your own mail app. ・All communication stays on this computer. Your billing data is never sent anywhere. ・Turn it on from Settings > AI Link. ■ Improvements ・Date fields can now be typed directly. Formats like 2026/8/13 and 20260813 are accepted, and unrecognised dates are flagged immediately. ・Closing a document now asks "Keep editing / Discard / Save". You are now warned even if you only entered a number, date, subject or note. ・New items now take the standard tax rate of your configured country. Reordering the item list no longer changes the default. ・You can now select several items at once and add them all to a document. ・On desktop, adding line items now uses a floating panel. Add items one after another while watching the document, and drag them to any position. ・Reworked the first-run setup screens. ■ Fixes ・Fixed the loading spinner never stopping when PDF generation failed. ・Fixed image files being left behind when deleting several items at once. ### 1.13.1 — 2026-08-15 ■ New: AI Link (desktop only) ・AI apps such as Claude Desktop can now read your EasySeikyu documents, clients and items. Ask for revenue summaries or a list of overdue invoices in plain conversation. ・Any data change proposed by AI goes into an approval queue. Nothing in your data changes until you review and approve it in the app. ・AI can also draft emails such as payment reminders. It never sends them — review the draft and send it yourself from your own mail app. ・All communication stays on this computer. Your billing data is never sent anywhere. ・Turn it on from Settings > AI Link. ■ Improvements ・Date fields can now be typed directly. Formats like 2026/8/13 and 20260813 are accepted, and unrecognised dates are flagged immediately. ・Closing a document now asks "Keep editing / Discard / Save". You are now warned even if you only entered a number, date, subject or note. ・New items now take the standard tax rate of your configured country. Reordering the item list no longer changes the default. ・You can now select several items at once and add them all to a document. ・On desktop, adding line items now uses a floating panel. Add items one after another while watching the document, and drag them to any position. ・Reworked the first-run setup screens. ■ Fixes ・Fixed the loading spinner never stopping when PDF generation failed. ・Fixed image files being left behind when deleting several items at once. ### 1.13.0 — 2026-08-07 Improvements & Enhancements ### 1.11.0 — 2026-07-21 Improvements & Enhancements ### 1.10.0 — 2026-07-15 support for eu and qrcode ## Apps similar to EasySeikyu かんたん請求 | App | Rating | Price | Category | | --- | --- | --- | --- | | [領収書作成アプリ](https://appshunter.io/ios/app/id6743553461) | — | Free | Business | | [ジョブカン見積/請求書](https://appshunter.io/ios/app/id6444408475) | — | Free | Business | | [ツカエル見積・請求書オンライン](https://appshunter.io/ios/app/id831414927) | — | Free | Business | | [請求書作成アプリ - 見積もり 見積書作成](https://appshunter.io/ios/app/id6747942011) | — | Free | Business | | [見積納品請求書+インボイス](https://appshunter.io/ios/app/plus/id1494250527) | — | Free | Business | ## More apps by 瑜 邹 - [EasyPass Japan License Test](https://appshunter.io/ios/app/easypass-japan-license-test/id6505101749) - [Korean License Prep EasyPass](https://appshunter.io/ios/app/korean-license-prep-easypass/id6723898172) - [Thai DMV License Test EasyPass](https://appshunter.io/ios/app/thai-dmv-license-test-easypass/id6744286162) - [Kaikei - Freelance Accounting](https://appshunter.io/ios/app/kaikei-freelance-accounting/id6756176194) - [IronReko - Hardcore Lift Log](https://appshunter.io/ios/app/ironreko-hardcore-lift-log/id6761006424) All apps by 瑜 邹: https://appshunter.io/developer/1755132025 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*