The Calculator vs CALKING
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
The Calculator
This app combines a powerful calculator with a note-taking feature, allowing you to document calculations as you perform them. It also offers unit and currency conversions, with customizable appearance and settings.
- Integrated notepad for documenting calculations
- Unit and currency conversion
- Basic, scientific, and conversion calculators
- Customizable appearance (light, dark, black)
- Adjustable number formats and decimal places
- History with attachable notes
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How many steps does it take to work out a bill? Open the calculator, get a number, write it down somewhere, come back, forget where you were. The notepad lets you write the whole thing as text — every line worked out as you type it: rent = 1200 utilities = 85 rent + utilities 1285 Name your values and reuse them. It reads plain English too: 20 ml in tsp 100 USD in EUR 20% off 80 Also good for - Travelling — convert as you go, the whole day's spending on one page - Cooking — cups, ounces, Fahrenheit, all converted in one place - Estimating materials — add up three walls, divide by coverage per tin - Quoting work — change one number, everything recalculates Three more calculators - Basic — large type, generous spacing, your working shown as you build it - Scientific — trigonometry, logarithms, powers and roots, 2nd key cycles four layers - Convert — 123 units across 15 categories, currency rates update automatically Things you can adjust - Number format — comma, period, space, apostrophe, or none - Decimal places — full precision, or fixed to a number you choose - Appearance — light, dark, true black, or follow the system - Startup page — pick which one opens when you launch the app - Haptics — tune the strength or switch it off Also inside - History, with notes you can attach - Control Centre button for one-tap access - Available in many languages, with unit names and keywords in each Built on minimalist principles Clean design, smooth interaction, no noise — only what actually matters. The Calculator is free to use. Convert and Notepad are Premium features. Terms of Use: https://www.minlsm.com/terms Privacy Policy: https://www.minlsm.com/privacy
CALKING
This app combines a calculator with a notepad, allowing users to save numbers and calculation results instantly. Organize your data with colorful, sticky-note style memos and easily retrieve information for various tasks like budgeting and expense tracking.
- Save calculations instantly
- Sticky note style memos
- Color-coded organization
- Calculate totals by color
- Three separate memo boards
- Add custom notes to memos
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The Calculator That Keeps Your Notes, Too. Need to save numbers while you're calculating? CALKING combines a calculator and a notepad into one simple, powerful app. Save numbers and calculation results instantly, organize them with colorful sticky-note style memos, and keep everything easy to find. Perfect for shopping, budgeting, work estimates, expense tracking, travel planning, and everyday calculations. ## Features **Save calculations as you work** Quickly save any number or calculation result to your memo board with a single tap. No more switching between your calculator and notes. **Sticky note style memos** Organize your calculations with colorful memo cards. You can also add your own notes to each memo, making it easy to remember what every number is for. **Color-coded organization** Assign different colors to your memos and keep everything organized at a glance. Perfect for separating categories like: - Expenses - Income - Shopping - Estimates - Projects **Calculate by color** Need the total for just one category? CALKING lets you calculate the total of notes with the same color, or calculate the grand total of everything. Managing complex numbers has never been easier. **Three separate memo boards** Keep your calculations organized with three independent memo boards. For example: - Personal - Work - Budget Switch between them whenever you need. ## Great for - Shopping lists - Household budgeting - Expense tracking - Business estimates - Travel planning - Schoolwork - Everyday calculations ## Why CALKING? Most calculator apps only give you an answer. CALKING helps you remember where those numbers came from. It's the easiest way to calculate, organize, and keep track of your numbers—all in one place.
Screenshots
Verdict
The clearest difference is price: The Calculator at Free against CALKING's $2.99. The Calculator also leads on update cadence (every 6 days vs every 3 weeks). CALKING's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
The Calculator is free to download; CALKING costs $2.99 up front. The Calculator sells 3 in-app purchases, starting at $4.99 per month. CALKING asks for nothing beyond the download.
The Calculator ships an update every 6 days, CALKING every 3 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | The Calculator | CALKING |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium — better | Paid |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 17 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | YiDe Liu | BYKING INC. |
Customer experience
The Calculator
CALKING
In-app purchases
The Calculator
- Premium$4.991 Month
- Premium$29.991 Year
- Premium$9.99
CALKING
No in-app purchases









