Looking for a soulver alternative that works outside the Apple ecosystem? Soulver 3 is a beautifully made app, but it only runs on macOS, iPadOS, and iPhone. The moment your day touches a Windows laptop, a Linux box, or a shared browser, you need something different. Notes Calculator is that something — the same natural language math you like about Soulver, everywhere you actually work, with your notes synced automatically across devices.
This page is an honest, side-by-side comparison. Soulver does several things better than we do. We will say so up front, because the decision here is about your workflow, not our marketing.
What Soulver 3 Does Well
Before we get into the differences, Soulver deserves real credit. It is one of the most thoughtfully designed calculator apps on any platform, and there are specific reasons people pick it.
Deep macOS integration. Soulver does not feel like a ported app — it feels like a piece of macOS. Spotlight surfaces its results, QuickLook previews open instantly, the QuickSoulver system-wide shortcut lets you bring up a scratch calculation without leaving your current window, and Touch Bar and VoiceOver support are first-class. If you spend all day in macOS, that integration is hard to beat.
Native iPhone and iPad apps. Notes Calculator does not yet have a native iOS app. If you rely on a full-featured calculator on your phone or iPad, Soulver is the better choice. The iPad version in particular is excellent on larger screens and with the Apple Pencil.
Date, time zone, and business-day math. Soulver handles date arithmetic, time zone conversions, and business-day calculations out of the box today. Notes Calculator has time zone support shipping in an upcoming release, but for now, if you live in a calendar — scheduling across cities, counting weekdays between dates, adding durations — Soulver is stronger.
Live stock prices. Soulver’s optional $26-per-year subscription connects to 70+ stock exchanges and 150,000+ tickers, and it supports historical prices. If you model portfolios in a notepad calculator, this is a real advantage.
200+ unit conversions and a no-commitment trial. Soulver ships with a very large unit library and a 30-day free trial when you buy direct. You can take the whole app for a serious test drive before spending anything.
If your workflow is fully inside the Apple ecosystem and any of the above is part of how you think, Soulver is still an easy recommendation.
Where Notes Calculator Goes Further as a Soulver Alternative
The picture changes the moment you step outside Apple’s walls — or want to pay once and forget about it.
It runs everywhere
Notes Calculator has native desktop apps for macOS, Windows, and Linux, and a full web app at app.notescalculator.com that works in any browser. Soulver is Mac, iPad, and iPhone only. For anyone whose work crosses operating systems — a Windows machine at the office, a Linux build server at home, a MacBook for travel — Soulver simply is not available on the other side. With Notes Calculator you open the same app on all of them.
Your notes follow you across platforms
Soulver uses iCloud to keep Apple devices in step. That works well if you only ever use Apple hardware, but it stops at the edge of the ecosystem. Notes Calculator signs you in once and syncs notes across Mac, Windows, Linux, and the browser automatically. Start a calculation on your Mac at home, continue it on the Windows box at work, finish it from a browser on a shared machine — your full history is there on every device.
Free, with a one-time upgrade instead of a per-platform tax
Soulver charges a one-time fee per platform. Mac is roughly $34.95. iPad is around $19.95. iPhone is a separate purchase. The stock-data feature is a $26-per-year subscription on top. Paying once per release per platform is fair, but it adds up if you want the app on everything you own.
Notes Calculator is free to use on every platform, with no trial timer. There is an optional lifetime upgrade for premium features — buy it once and it covers you across Mac, Windows, Linux, and the web. See the current details on the pricing page.
Instant access in any browser
Because Notes Calculator has a real web app, the path from “I need to try this” to “I am using it” is a single URL. No download and no install prompt — open app.notescalculator.com in any browser, sign in with a free account, and start typing.
Expression Language: A Closer Look
Both apps handle the core notepad-calculator moves the same way. Assignments, plain English math, conditionals, currency, units — all work on both sides. Here is what that looks like in Notes Calculator:
hourly_rate = 85
hours_worked = 160
gross = hourly_rate * hours_worked
// 20% for taxes
tax = gross * 20%
net = gross - tax
# Travel budget
flights = 640 EUR
hotel = 3 * 180 EUR
transport = 95 EUR
total_in_usd = (flights + hotel + transport) in USD
# Programmer math
0xFF + 0x10
// 255 + 16 = 271 in decimal
You can organize a longer note with Markdown-style headings (# Section) and inline comments (// rationale), which makes the document readable to anyone who opens it later — not just you in the moment you wrote it.
Pricing Comparison
| Notes Calculator | Soulver 3 | |
|---|---|---|
| Starting price | Free on every platform | ~$34.95 Mac, ~$19.95 iPad, separate iPhone purchase |
| Premium | One-time lifetime upgrade, covers every platform | Per-platform, per-major-release; $26/yr for stock data |
| Trial | No trial limit — full free tier | 30-day trial on direct purchase |
| Subscription | None required | Required for live stock data |
If price-per-platform bothers you, or you want a single purchase that follows you from Mac to Windows to the browser, Notes Calculator is the cheaper long-term bet. If you only use Mac and want the extras (business-day math, stock data), Soulver’s pricing is reasonable for what it delivers.
Which Should You Choose?
Choose Soulver if:
- You work exclusively inside the Apple ecosystem (Mac + iPad + iPhone).
- Spotlight, QuickLook, or the QuickSoulver system-wide shortcut are a daily part of how you move.
- You need business-day math, live stock prices, or time zone calculations today.
- A native iPhone or iPad calculator is a hard requirement.
Choose Notes Calculator if:
- You use more than one operating system — or any browser — in a normal week.
- You want your calculations to sync across Mac, Windows, Linux, and the web, not just across Apple devices.
- You prefer a free tier you can rely on indefinitely, with an optional one-time premium instead of per-platform fees.
- You like the Soulver-style notepad-calculator feel and want it everywhere.
You can try Notes Calculator right now, with no install, at app.notescalculator.com. If you are already on a Mac, you can run it alongside Soulver and see which one fits the way you actually work.
Getting Started With Notes Calculator
Open the web app at app.notescalculator.com — no install, no download. Create a free account and start typing a calculation in plain English; the answer appears inline as you type. From there you can define variables, add comments, organize with headings, and reference earlier values by name.
When you want the desktop experience, download the Mac, Windows, or Linux app and sign in with the same account. Sync happens in the background, so the note you started in your browser is there when you open the desktop app. That is the promise of a cross-platform soulver alternative: the calculator goes where you go, without making you rebuy it for every device.