# Jotsum: Calculator Notepad — The notepad that does the math

> The notepad that does the math (iPhone/iPad app by Hrvoje Matosic.)

- Source: https://appshunter.io/ios/app/jotsum-calculator-notepad/id6785305380 (this page in markdown: same URL + `.md`)
- Developer: [Hrvoje Matosic](https://appshunter.io/developer/1805673692)
- Category: Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Brazilian Portuguese, Russian, Chinese (Simplified, China), European Spanish, Swedish
- Released: 2026-07-01
- Data updated: 2026-09-01
- User reviews in markdown: https://appshunter.io/ios/app/jotsum-calculator-notepad/id6785305380/reviews.md

## What is Jotsum?

Jotsum is a calculator you write in plain words. Type your math and notes on the left; the answers appear on the right, live, as you type — no equals key, no buttons, no fuss.

It’s the everyday calculations you actually do: splitting a bill, converting currencies at today’s rate, working out a percentage off, adding up a trip budget, or checking how many days until a deadline. Name your values and reuse them down the page, and Jotsum keeps the whole sheet in sync.

SYNCS WITH YOUR MAC
Your calculations sync over iCloud, so the sheet you start on your Mac is on your iPhone — and the other way around. No account, no sign-in; it uses your own iCloud.

WHAT IT DOES
• Plain-language math with variables — name a number, reuse it anywhere
• Live currency conversion (160+ currencies + Bitcoin/Ethereum, no API key, no login)
• Units — length, mass, time, volume, data, temperature, area, speed
• Percentages done the human way — “20% off 80”, “12 is what % of 60”
• Dates & durations — “3 days + 5 hours”, “days until christmas”, time zones
• Scientific functions — sqrt, sin/cos/tan, logs, exp, powers, plus pi, e, tau
• Finance — compound interest and mortgage payments
• Multiple notes, organised in a tidy list

PRIVATE BY DESIGN
Everything stays on your devices and your own iCloud. No account, no analytics, no tracking. Currency rates are the only network request, and the app works offline too.

Light and dark, with a warm editorial look that’s easy on the eyes all day.


Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Jotsum Pro | $0.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Jotsum Pro | $29.00 | one-time |



## Version history (last 5 releases)

### 1.5.4 — 2026-08-30

A new app icon. The j now sits on deep green next to an equals sign, so Jotsum is far easier to pick out on a crowded Home Screen — the old cream tile tended to disappear against light wallpapers.

### 1.5.3 — 2026-08-10

Fixes an issue on iPhone and iPad where a page's text could be invisible. If pages looked empty, this update brings them back — nothing was lost.

Also in this update:
• Pages open ready to type, right where you left off
• Date math follows the calendar: "days till christmas", "31 jan + 1 month"
• Percentages work with durations: "8 hours + 15%"
• Emoji in notes are preserved on the Mac
• Many stability fixes across sync, undo, and the keypad

### 1.5.2 — 2026-07-21

Fixes and new conversions.

• Undo now steps back one change at a time, instead of clearing the whole note.
• Editing a number next to a thousands separator now works.
• New: month and year conversions, plus countdowns like “days until Christmas”.
• sum, average, min, and max now handle mixed currencies.
• Faster, more reliable iCloud sync.

### 1.5.1 — 2026-07-20

Fixes, including several that could give a wrong answer.

• Subtracting or dividing with a currency respects the order you wrote: "100 - 30 usd" is $70.
• Commas inside functions read correctly — max(1,2) is 2, not 12.
• Hours and days keep their units when scaled: "2 h × 3" is 6 h.
• A stock quote that hasn't loaded no longer reads as a same-named currency.
• Three crashes fixed: very large numbers, and undo after auto-formatting or inserting a line reference.
• Line references stay pointed at the line you picked when you add or remove lines above them.
• Numbers written on a device that uses "1.234,56" are no longer rewritten when opened elsewhere.
• Your notes now sync during the free trial, as promised.
• Typing is much faster in long documents.

iPhone & iPad: text size and appearance settings, folder rename and delete, Empty Trash, exchange-rate freshness, and keyboard shortcuts on iPad.

### 1.5 — 2026-07-17

Jotsum now understands Spanish — type "suma", "20% de descuento en 500", "clima en cdmx", or "hoy a navidad". It also understands spoken math in both languages: "12 plus 4", "100 divided by 4", "6 por 7". The app itself now speaks Spanish, German, French, Italian, Portuguese, Chinese, Japanese, Swedish and Russian.

Also in 1.5: 1.5M / 2 billion magnitudes, totals that skip dates instead of silently breaking, comma-decimal input for European keyboards, a Mac answers column that fits its contents, tap-to-copy answers on iPhone, and a 30-day free Pro trial with a new $9.99/year plan.

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## More apps by Hrvoje Matosic

- [Karl: Voice Meeting Notes Pro](https://appshunter.io/ios/app/karl-voice-meeting-notes-pro/id6787791260)

All apps by Hrvoje Matosic: https://appshunter.io/developer/1805673692

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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 2026-09-01.*