Comparison

Notepad Calculator vs Only This

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

Head to head
About

Notepad Calculator

Features
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Notepad Calculator is a smart calculator disguised as a notepad. Instead of juggling a calculator app and a notes app, just write what you're thinking — every line is calculated instantly, right next to your words. Write math the way you think Type expressions in plain language and get answers on the same line: 500 + 200 * 3 → solved as you type, no equals button needed 10 km in miles, 5 feet 6 inches + 8 in today + 3 weeks, Jan 1 2025 to Mar 1 2025 tax = 15% then reuse price + tax anywhere below 8%, VAT, tip, subtotals and totals with #tag aggregation Every answer becomes a variable you can reference later, so multi-step calculations stay readable. Powerful, all offline A fast local engine handles a huge range of math with no internet, accounts, or AI required: Functions: sqrt, sin, cos, tan, log, ln, exp, abs, round, max, min, pow, and more Constants: pi, tau, phi, e Units & conversions: length, weight, volume, time, speed, temperature, electrical, and custom units Currency conversion with offline-cached exchange rates and a live "Update Rates" refresh Statistics, percentages, bases & bitwise (hex/binary/octal), trig in degrees or radians Chinese large-number support (万 / 亿) and spelled-out numbers (million, billion) Make it yours Definition Sheet — define global variables, your own units (1 box = 12 items), and custom functions (f(x) = x * 2) that apply to every document Organize work into folders, pin, archive, and search across all notes Headers (# Title), dividers (---), and tag totals keep long sheets tidy Tint the results column, align answers, and adjust line spacing to taste Export any sheet to Markdown or CSV Built for Mac Menubar Quick Calc — pop open an instant calculator from the status bar without leaving your work iCloud sync — your notes and calculations follow you to iPhone and iPad Native Mac storage, autosave, and a clean three-pane layout (sidebar · editor · live results) Smart autocomplete for units, currencies, functions, and variables 10 interface languages with live switching Whether you're estimating a project budget, converting recipes, planning a trip, or just splitting a bill, Notepad Calculator turns your notes into a living spreadsheet — without the spreadsheet.

About

Only This

Features
Read full description

Most task apps show you everything at once. Every project. Every deadline. Every unfinished thing. All competing for your attention before you’ve even started. For some people, that can be stressful. For an easily distracted mind, it can be paralyzing. Only This does the opposite. It shows you one task. The one you should be working on right now. YOUR NEXT STEP
 Add your tasks, and Only This shows you just one. Full screen, nothing else competing for attention. Finish it, and the next one appears on its own. SKIP IT, OR GO BACK
 Not the right moment for this one? Skip it for now and it comes back around later. Changed your mind about something you already finished? Go back a step, as many times as you need. SEE EVERYTHING, WHEN YOU WANT TO
 Open All Steps anytime for the full picture. Reorder your list, jump straight to any task, or paste in a whole list at once, your own or one made with the help of AI. Shuffle the order if a routine chore needs to feel a little less routine. WORKS WITH REMINDERS
 Link a project to a Reminders list and the two stay in sync in both directions. Ask Siri to add a step by name, and it shows up in Only This on its own. MADE FOR IPHONE, IPAD, AND MAC
 Your projects sync through iCloud, so it's the same list wherever you pick it up. BUILT FOR EVERYONE
 Only This works fully with VoiceOver, because a calmer task list shouldn't be for sighted users only. Free of clutter. And Cost. No charge, no subscription, no ads, no account required. Because if you're of the easily distracted mindset, things are costly enough. ONLY THIS A quieter way to get one thing done. And then the next. WHY I MADE THIS I have ADHD, and I lean on tools that help me stay focused. I tried a lot of task list apps made for people like me. Some wanted to gamify everything. Some had distracting ads. Some charged on a regular basis for an app that didn't update on a regular basis. I couldn't find the one thing I wanted: a task list that shows a single step and then gets out of the way. So I built it. If it's useful to you, or you'd like an improvement, or you hit a bug, reach out. I'd genuinely like to hear from you. You'll find my email in the app, under "Only This Tutorial and Tips." One thing at a time. You've got this. Jason

Screenshots

Notepad Calculator3 screens
Only This4 screens

Verdict

The call

The clearest difference is price: Only This at Free against Notepad Calculator's $2.99. On update cadence, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Only This is free to download; Notepad Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Notepad Calculator ships an update fortnightly, Only This every 9 days. The most recent releases landed on September 22, 2026 and September 20, 2026 respectively.

Scorecard1 real difference · 5 level
Notepad Calculator versus Only This: the parameters behind the verdict, then further details
ParameterNotepad CalculatorOnly This
Price$2.99Free — better
Update frequencyFortnightlyEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, MaciPhone, iPad, Mac
Requires iOS17.017.0
Further details — not scored
Size4 MB1 MB
Age rating4+4+
Developer方成 印Jason Yohman

In-app purchases

None

Notepad Calculator

No in-app purchases

None

Only This

No in-app purchases

Questions

Is Notepad Calculator free?
Notepad Calculator costs $2.99, with no in-app purchases.
Is Only This free?
Only This is free to download, with no in-app purchases.
Do Notepad Calculator or Only This have ads?
Neither Notepad Calculator nor Only This shows ads.
Which is updated more often, Notepad Calculator or Only This?
Notepad Calculator ships an update fortnightly, and Only This every 9 days. Most recently, Notepad Calculator was updated on September 22, 2026 and Only This on September 20, 2026.

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