Solo Invoice: Quote & Receipt
Unlimited line items, offline
Only for iPhone
$0.99 · Designed for iPhone. Not verified for macOS.
iPhone
One set of line items becomes a quote, delivery note, invoice or receipt with one tap. Japanese qualified-invoice fields included. No limit on lines. PDFs made on device.
There is no cap on line items.
Nothing stops at 26 rows, and nothing gets cut off on page two.
Quote, delivery note, invoice and receipt are all rebuilt from the same rows in a single tap.
Solo Invoice is a billing app for one-person businesses — freelancers, sole traders and side-hustlers who issue their own paperwork. No account, no cloud. What you type stays on your device.
DON'T RUN OUT OF ROWS
- Unlimited line items; A4 pages are added automatically as you go
- The date field is free text: leave it blank, or write "7/1-7/15"
- Add units such as "hrs", "pcs", "days"
- Insert heading-only rows to group work into sections
- Drag to reorder
FOUR DOCUMENTS, ONE SET OF DATA
- Invoice / Quotation / Delivery note / Receipt
- Turn a quote into an invoice, or an invoice into a receipt, in one tap
- Receipts support a "for ..." description line
BUILT FOR JAPAN'S QUALIFIED INVOICE SYSTEM
- Prints your registration number
- Per-row 10% / 8% (reduced) / non-taxable rates, summarised per rate
- Tax exclusive, tax inclusive, or no tax column
- You choose rounding: down, up, or half-up
- Optional 10.21% withholding, with the net payable amount
ENTER IT ONCE
- Trading name, address, phone, fax, email, registration number
- Bank details for transfers
- Digital seal and logo placement
- Automatic document numbering
SEE IT BEFORE YOU SEND IT
- Review every page of the PDF inside the app before sharing
- Files are named so you can find them later
- Share via mail, messaging, AirDrop, Files or AirPrint
NO ADS
- No ad SDK. No banner covering your buttons
- A single "Picks" tab links to the official Japanese tax-office pages you actually need — registration-number lookup, filing, and reference material — plus the other apps made by the same developer. Both are hand-picked fixed lists, not served ads
- No in-app purchases either
PRICING
- A one-time purchase. Nothing more to pay after that
- No in-app purchases. Not a subscription
- Every feature is available from the start, with no caps on documents or line items
- Re-download on a new device with the same Apple ID
YOUR DATA
- Stored only on this device. Nothing is uploaded
- No sign-up
- Export a JSON backup before changing phones, and CSV for your tax return
Publisher: Sauna Inc.
Support: https://tokyo357.com/support
Privacy: https://tokyo357.com/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Added "Our other apps" in Settings, so you can see what else we make. The App Store opens inside the app, so you never lose your place.
The developer, Daisuke Yamaguchi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Daisuke Yamaguchi
- Size
- 1.8 MB
- Category
- Business
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- Japanese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Sauna Inc.
