Comparison

InkCalc vs Notepad Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

InkCalc

Features
Read full description

Write "29 dollars an hour, 22 hours a week, for 4 weeks." Tap AI. Get 2,552. InkCalc is a calculator you write in sentences. No re-punching numbers into a keypad, no wondering what that figure was for. Units, live currency, dates and percentages all work inline, right in your notes. Write expressions line by line and results appear on the right, accumulating over time alongside written notes — a calculator built to be kept open as a long-running notebook, not a scratchpad. For iPhone, iPad and Mac. Universal Purchase means one subscription covers all three. Starts with a 1-month free trial (auto-renews after that — see SUBSCRIPTION below for details). — AI-NATIVE ACTIONS (subscription required) — AI — Natural language to expression Write "29 dollars an hour, 22 hours a week, for 4 weeks", tap the AI button in the toolbar, and AI converts it to `29 * 22 * 4`. Fix — AI fixes errors With one tap, AI replaces a parser-failed line with a corrected expression. Summary — One-to-three-line note summary AI reads your whole note and summarizes the intent and conclusion in plain natural language. Intent — Intent inference from comments Write a question comment like `# Monthly communications total?`, and AI analyzes the relevant lines and inserts a summing formula directly below the question. Backends: Apple Intelligence (default, on-device or via Apple Private Cloud Compute with end-to-end encryption — neither the developer nor any third party can read the data), or bring-your-own-key options. With a bring-your-own-key backend, the user supplies their own credentials and prompts are sent to the chosen provider. — CALCULATOR FEATURES — • Unit math: `5 km in miles`, `1 kg as lb`, `100 USD in JPY` • Real-time currency conversion (USD, EUR, JPY, GBP, and more) — subscription required • Percent: `20% of 100`, `1000 + 10%` • Hex / binary / octal literals + bitwise ops: `0xff & 0x0f`, `255 in hex` • Line references: `ans`, `line2`, `sum above`, `avg above`, `total` • Dates: `2025-04-25 + 7 days`, `today + 30 days`, date diff in days • Functions: sqrt, sin/cos/tan, ln/log, round/floor/ceil, sum/min/max/avg, and more • Constants: pi, e, tau • Variables: assign with `x = 5` and reuse on later lines — AS A CALCULATION NOTE — • Multiple notes + folder selection. Each note is a local `.inkcalc` file. • iCloud Drive sync keeps your notes up to date across iPhone, iPad, and Mac. • Open `.inkcalc` files directly from the Files app. • Export to Markdown / CSV. — UI — • Designed for iPhone and iPad (two-pane list + editor layout on iPad) • Quick bar above the keyboard: comment toggle and one-tap calculator symbols • Dark, minimal UI with a light/dark appearance setting • Adjustable font size and decimal precision — PRIVACY — The developer collects nothing — no server, no telemetry, no analytics. With Apple Intelligence as the backend, requests stay on-device or are processed through Apple Private Cloud Compute with end-to-end encryption — neither the developer nor any third party can read the data. See the in-app privacy policy for details. — SUBSCRIPTION — • Title: InkCalc Monthly (auto-renewable subscription) • Length: 1 month, auto-renewing • Price: $1.99 / month (Apple displays your local price in-app) • Free trial: 1 month for new subscribers • Payment is charged to your Apple ID after the trial. The subscription auto-renews unless canceled at least 24 hours before the end of the current period. • Manage or cancel in Settings → [your name] → Subscriptions, or right from the app's own settings screen. • Privacy Policy: https://inkcalc.app/privacy • Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ — REQUIREMENTS — iPhone and iPad: iOS 17.0 or later Mac: macOS 13.0 or later (Apple Silicon and Intel) Universal Purchase — one subscription covers all three devices.

About

Notepad Calculator

Features
Read full description

CalcEn is a powerful notepad calculator that lets you write calculations naturally. Combine notes, formulas, percentages, variables, unit conversions, currency conversions, and advanced math - all in one clean workspace. Whether you're balancing a budget, solving homework, calculating expenses, tracking investments, or doing quick everyday math, CalcEn makes calculations effortless. Share and export your notes as PDF, Image, or Text. FEATURES: • Natural text-based calculator Write calculations as you think. No complicated buttons or menus. • Smart Notepad Keep notes and calculations together in one organized workspace. • Variables & Formulas Create reusable variables and reference them anywhere in your calculations. • Live Results Results update instantly as you type. • Unit Conversions Convert length, weight, temperature, speed, area, volume, and more. • Currency Converter Convert between major world currencies with ease. • Percentage Calculator Quickly calculate discounts, tips, tax, profit margins, percentage increases, and decreases. • Financial Calculations Perfect for budgeting, expense tracking, investments, and everyday finance. • Scientific Functions Perform advanced mathematical calculations with a clean and intuitive interface. • Clean & Modern Design Distraction-free interface designed for speed and productivity. Perfect For: • Students • Engineers • Developers • Accountants • Business owners • Investors • Freelancers • Anyone who works with numbers • Copy & Share: Copy calculations to the clipboard or instantly share them with other apps. • Share Your Work: Export note as PDF (Print Friendly), Image, Text. Privacy Policy: https://docs.google.com/document/d/1hZ1JrlKZj3gJQ3sjEjcDJ1ts2SWIXjwoy3IMiYaJQ1Q Terms of Use: https://docs.google.com/document/d/1KWQ9NVoN-M9Eugfg6XVGntK_4OhlxmpVJ_FJRzl0et4

Screenshots

InkCalc4 screens
Notepad Calculator4 screens

Verdict

The call

The clearest difference is update cadence: Notepad Calculator at every 2 days against InkCalc's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. InkCalc sells 1 in-app purchase, starting at $1.99 per month and Notepad Calculator sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

InkCalc ships an update fortnightly, Notepad Calculator every 2 days. Both last shipped on October 31, 2026.

Scorecard1 real difference Ā· 5 level
InkCalc versus Notepad Calculator: the parameters behind the verdict, then further details
ParameterInkCalcNotepad Calculator
PriceFreeFree
Update frequencyFortnightlyEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.016.4 — better
Further details — not scored
Size2 MB62 MB
Age rating4+4+
DeveloperKENTARO SOGAPreet Jariwala

In-app purchases

1 purchases

InkCalc

Subscriptions1
  • InkCalc Monthly1 Month trial$1.991 Month
3 purchases

Notepad Calculator

Subscriptions2
  • CalcEn Weekly-Pro3 Days trial$3.997 Days
  • Yearly Pro$14.991 Year
One-time1
  • CalcEn Lifetime-Pro$34.99

Questions

Is InkCalc free?
InkCalc is free to download, with in-app purchases available.
Is Notepad Calculator free?
Notepad Calculator is free to download, with in-app purchases available.
Do InkCalc or Notepad Calculator have ads?
Neither InkCalc nor Notepad Calculator shows ads.
Which is updated more often, InkCalc or Notepad Calculator?
InkCalc ships an update fortnightly, and Notepad Calculator every 2 days. Most recently, InkCalc was updated on October 31, 2026 and Notepad Calculator on October 31, 2026.

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