# CalBook: Tape Calculator — Adding Machine for Receipts

> Adding Machine for Receipts (iPhone/iPad app by Derick Tsang.)

- Source: https://appshunter.io/ios/app/calbook-tape-calculator/id6772384830 (this page in markdown: same URL + `.md`)
- Developer: [Derick Tsang](https://appshunter.io/developer/6772384832)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 5 MB
- Languages: American English
- Released: 2026-06-08
- Data updated: 2026-10-12

## What is CalBook?

CalBook is a paper tape calculator for the numbers you need to keep. Every entry stays on the tape, so you can see exactly how you got to the total, go back, and fix a typo without punching everything in again.

Built for adding up receipts, invoices, expenses and anything else that used to live on an adding machine roll.

AN EDITABLE TAPE
- Every line stays visible with its result
- Tap any line to change it; the total updates instantly
- Carry a line's result forward into a new calculation
- Duplicate, delete, or copy any line or its result

A SHEET FOR EVERY JOB
- Keep separate sheets for each client, project or month
- Rename sheets and pick up right where you left off
- Share a sheet as text, an image, or a view-only link

A CALCULATOR THAT FEELS RIGHT
- Big, clear keypad with optional sound and haptics
- Percent key up front; memory, powers, roots and trig in landscape
- Nine keypad skins, starting with a Liquid Glass default

CALBOOK PRO
A single one-time purchase. No subscription.
- Comments on any line: note the store, the client, or the invoice number
- Row highlights to flag the lines that matter
- Export to PDF for printing or filing, or CSV for Numbers, Excel and Google Sheets
- Unlimited sheets
- Editable share links, so others can keep working on a sheet
- Seven Pro themes that restyle the keypad and your sheet list, plus every accent color
- Advanced number formatting, including South Asian (lakh, crore) grouping, custom separators, symbols and decimal places

PRIVATE BY DESIGN
Your sheets stay on your iPhone. No accounts, no ads, no analytics, no tracking.

Questions or ideas? Tap Send feedback in Settings. We read everything.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Calcoo Pro | $6.99 | one-time |


## Is CalBook safe?

Not enough ratings yet to assess CalBook.

## Is CalBook legit?

CalBook: Tape Calculator has limited verification signals. The AppsHunter Legitimacy Score for CalBook is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.1 — 2026-09-29

Meet CalBook: a new name and a clearer focus on adding up receipts, invoices and expenses.

- New: export any sheet as a printable PDF or a CSV for Numbers, Excel and Google Sheets (CalBook Pro)
- New: seven Pro themes that restyle the keypad and your sheet list
- The running total now shows by default
- Better VoiceOver labels and Dynamic Type support
- Smoother keypad and faster skin rendering

### 1.0 — 2026-06-08

No release notes.

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## More apps by Derick Tsang

- [Yiju: Daily Chinese Sayings](https://appshunter.io/ios/app/yiju-daily-chinese-sayings/id6811700569)

All apps by Derick Tsang: https://appshunter.io/developer/6772384832

## Related topics

[tape calculator](https://appshunter.io/ios/topics/tape-calculator)

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*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 2026-10-12.*