Notepad, meet calculator.
Soulver is a natural-language notepad calculator.
It helps you think through problems and work things out.
This is where you run the numbers
Soulver combines a classic notepad app with a natural language calculator.
It’s like a back of a napkin that thinks along with you — deceptively simple, and surprisingly powerful.
15% of 490 73.5 $3k earnings ÷ 5 people $600.00 lunch was $55 + 25% tip $68.75
Delightfully friendly for serious business
Soulver’s calculator recognizes dates, currencies, units and natural-language phrases.
Stay thinking at the level of your problem, and leave the boring arithmetic to us.
$3,400 + 10% sales tax $3,740.00 line1 in EUR €3,432.00 May 5 + 43 days June 17
Stop trying to hold it all in your head
Soulver holds your thinking on the page — all the relevant variables, different scenarios, quick totals — all while you stay focused on the problem at hand.
It’s both cognitive expansion & relief.
monthly rent = $2.5k $2,500.00 phone bill = $45 $45.00 food = $50 per day × 30 days $1,500.00 total cost per month $4,045.00
The fluidity of paper + computational power
Soulver gives you tools for your best numerical thinking — live currencies, hundreds of units & functions, variables & subtotals.
The answer column chugs away alongside your calculations — both out of the way, and indispensable.
contractor = $85/hr × 8 hrs $680.00 line1 + materials $240 $920.00 line2 in EUR €846.40
What people say about Soulver
Soulver rules.
Last calculator you’ll ever need.
Peter Steinberger · Creator of OpenClaw · @steipeteI think this is actually my most used Mac app ever, I don’t even remember life before Soulver.
Dave Verwer · iOS Dev WeeklySoulver is the best ‘back of an envelope’ ever created.
Even better than the back of an actual envelope.
Stephen Howells · @stephenhowellsA Mac without Soulver open feels broken to me.
Bryan Irace · @iraceHave I recently mentioned how amazing Soulver is? Because, it is.
Marc Edwards · Creator of iStat Menus · @marcedwardsSoulver is one of my favorite apps.
It’s a text editor that’s also a calculator, like a one-dimensional spreadsheet.
Ricky Mondello · Lead on Passkeys at Apple · @rmondelloThis is no ordinary notepad.
The Answer Column
We invented it in 2005.
Mix words and numbers, and get instant answers on the right.
# Trip Costs Airfares $420 × 2 flights $840 Hotel $150 × 4 nights $600 Meals $65 × 4 days $260 Total $1,700
Line references
Double-click (or tap, on iOS) an answer to reference it in a calculation below.
References are live and update automatically when previous lines change.
# Sales Last quarter $42k $42,000 This quarter $48.3k $48,300 line1 to line2 as % 15%
Subtotals
Double-click (or tap, on iOS) a blank line beneath some lines, and Soulver drops a subtotal in.
# Dinner Party Mains $24 × 8 people $192 Wine $18 × 3 bottles $54 Dessert $7 × 8 people $56 subtotal $302
Multi-word variables
Assign values to words or multi-word phrases.
Change a variable’s value, and your answers update instantly.
# Daily snacks daily snack cost = $5 $5 daily snack cost × 7 days weekly $35 daily snack cost × 365 days yearly $1,825
Live data
Fetch live & historical prices for currencies & stocks, check live weather across the planet, and query Wolfram|Alpha inline with “= ?” for other data.
weather in Tokyo 20 °C (mostly cloudy) 1 EUR in USD on 4 Jan 1999 US$1.18 NVDA on June 1, 2018 US$6.36 height of mount everest = ? 8,849 m
150k+ stocks & Wolfram|Alpha access require an optional data services subscription.
Trip planning
Mark a line with a date or time as a “time point”.
Soulver works out the dates of each trip segment for you.
# Japan trip
Leave August 10 10 August
Tokyo 4 nights 4 nights
Kyoto 3 nights 3 nights
Osaka 3 nights 3 nights
20 August
Tag summing
Do totals, averages, and other statistical operations on all lines with a particular tag.
# Split expenses Hotel $60 #jude $60 Dinner $30 #mollie $30 Uber $25 #jude $25 Wine $20 #mollie $20 #jude total $85 #mollie total $50
Structure & Style
Make your sheet read well, with headings, dividers, & highlights.
Hide numbers from Soulver’s calculator using labels & comments.
Plane (1.5 hours):
Ticket $185 $185
Airport taxi $45 // 50 min drive $45
Checked bag $30 // 21 kg $30
$260
Train (11 hours):
Ticket $95 $95
Snacks $20 $20
$115
---
Difference = line4 – line7 $145
Train is line8 cheaper, but 9.5 hours longer ← highlighted
Customize syntax colors & more in the settings.
The world’s best on-device calculator engine.
With hundreds of functions and units across dozens of areas of life, Soulver is the closest thing to a universal calculator ever created.
Percentages
$55 - 10% discount $49.50 25% of 300 75 50 to 90 as % 80%
Unit conversions
75 mph in km/hour 120.7 km/hour 32 C to F 89.6 °F 170 lb in kg 77.11 kg
Currencies
350 EUR in USD US$398.03 10 AUD + 20 CAD in GBP £16.90 3 BTC to USD on March 12 US$211,470
Calendar calculations
19 May to 25 December 7 months 6 days 1 June + 90 days 30 August days between 12 June and July 15 33 days
Clock times
17:30 to 20:45 3 hours 15 min 6:20pm - 2h 35m 3:45 pm 9:30am + 4h 48m 2:18 pm
Tax
£499 - VAT £415.83 income tax on $50k in Australia A$6,788.00 income after tax on $95k in Canada C$72,358.20
Time zones
3:30pm NYC to London 8:30 pm time in Paris 4:10 pm 9am JFK to SFO 6:00 am
Laps
10:01:02 10:01:02 15:01:02 15:01:02 subtotal 25:02:04
Loans & interest
30k after 3 years at 7% 36,751.29 monthly interest on $10,000 over 6 years at 6% $26.84 total repayment on $25,000 for 5 years at 7% $29,701.80
Inflation & investments
what was $500 worth in 1997 $249.27 $1 from 1997 today $2.01 $1000 at 8% for 10 years $2,158.92
Stocks
10 AAPL Jan 2, 2005 US$9.64 10 AAPL now US$2,978.40 profit = line1 to line2 as % 30,796.27%
Change over time
$24 a day for a year $8,765.82 20k after 6 months at 10% per month 35,431.22 time from 20k to 100k at 10% growth per month 16.89 months
Business days
work days between 1 March and 1 June 65 workdays work hours between March 12 and March 25 72 hours days between 1 Jan and Christmas 358 days
Cooking
250 g butter in cups 1.1 cups 10 L olive oil in kg 9.13 kg density of Nutella 1.26 g/cm³
Cars
30 mpg in km/L 12.75 km/L 500 W at 1500 rpm 3.18 N⋅m 250 hp in kW 186.43 kW
Programming & CSS
255 in hex 0xFF time to download 1.5 GB at 10 MB/s 2 min 30 s 1.5 rem in px 24px
Quick Quotes
rate = $120/hr $120.00/hour design = 42 hr × rate $5,040.00 build = 38 hr × rate $4,560.00
Natural language functions
midpoint between 50 and 100 75 640 is to 480 as 1920 is to what 1,440 average of 100, 300 and 731 377
Thoughtfully crafted for each device.
Refined over 20 years of continuous improvement, we’re proud to be a great macOS citizen. Native, modern — everything you’d want from a Mac-assed app.
Requires macOS 14 or later
Sharing & Export
Export sheets to PDF, print them out, or send a friend a beautifully styled HTML email.
Internationalization
Soulver supports 9 languages, and all common number formats. Foreign numbers are converted into your local format on paste.
Automation
A Shortcuts action, URL schemes and an agent-friendly command line interface let you integrate Soulver into any workflow.
Sheets & Sync
Your sheets sync to iCloud automatically across your Apple devices, and automatic backups ensure you never lose a calculation.
And one more thing: turn any sheet into a standalone Mac app with Soulver Studio.
We designed Soulver to be a desktop-class app on iPad, with deep system integration — including Apple Pencil & Magic Keyboard support.
Requires iPadOS 17 or later
Floating Number Pad
With compact & full size options, Soulver’s floating number pad makes it easy to do math alongside the system keyboard.
Multitasking
Soulver supports Stage Manager and multiple windows so you can edit multiple sheets side-by-side, or in Split View with other apps.
We designed Soulver on iPhone to support the same features as our larger-screen versions — with extra conveniences for
quick calculations on-the-go.
Requires iOS 17 or later
Custom Keyboard
Swipe the text area to switch between the system keyboard and our beautifully designed number keyboard. Long press on keys for additional options, including a dedicated cursor pad.
Accessory Row
Select from 6 different accessory rows depending on your task (percentages, currencies, dates etc). Customize the custom row with your own buttons.
Tell me more
Why Soulver?
Why Soulver?Why not just use a calculator?
If you’re doing simple arithmetic, a calculator is fine (though a tad clunky compared to Soulver). If you’re doing a multi-step calculation, a calculator isn’t the best tool for the job.
Soulver keeps the arithmetic happening alongside your thinking — the answers appear on the line. You never have to leave the problem to calculate as a separate step.
Why not use a spreadsheet?
Spreadsheets are for data — columns of values, formulas to crunch them. Soulver is for thinking — for when you’re working something out, in steps, with words and numbers mixed. There’s really nothing like it (except maybe a calculator & a piece of paper).
Why use Soulver itself, not a Soulver clone?
Not to brag, but we’re the original — Soulver invented the modern notepad calculator interface with the “answer column” in 2005.
Over the last twenty years we’ve refined & expanded on this great UI idea, making Soulver more useful for more areas of life. Soulver is also the only option that runs natively on Mac, iPhone, and iPad — more platforms than any clone. We provide free updates between major releases, and offer excellent support.
How does Soulver work?
How does Soulver work?Does Soulver use AI?
No. Soulver is powered by our own on-device natural language calculation engine SoulverCore. It scans each line of text for data it recognizes (currencies, dates, units, calculations) and evaluates the last valid expression.
Underneath, it’s actually a very high-level programming language — with variables, conditionals, and types — but the syntax is so “natural” that you don’t need to think about it most of the time.
How do I stop Soulver’s calculator from evaluating certain numbers in my text?
There are various ways to hide numbers from Soulver’s calculator: we support markdown headings, labels & 4 different comment styles for your convenience.
# 2026 P&L January 1-31: $10k revenue // 600 sales $10,000 $7k in expenses # including $2k VAT paid $7,000 $3k net (3 partners) $3,000 $1.2k outstanding "invoice 351" $1,200
Why is Soulver only an 18 MB download?
Many desktop apps these days are really websites pretending to be apps (Slack, Obsidian, 1Password, etc). They typically take up half a GB of hard disk space each, and use a lot of memory. In contrast, Soulver is crafted with the same native technologies that Apple uses. It launches fast, and uses minimal RAM & disk space.
Purchasing
PurchasingAm I automatically charged when my trial ends? (NO!)
You’re not charged a cent — I repeat, no automatic charge.
Soulver enters a “read-only” mode after the 60-day trial ends. You may continue to browse your sheets in Soulver, and export them to plain text, PDF or HTML. Creating new sheets & editing will require a manual purchase.
You seriously don’t charge a subscription?
We think your favorite tools should feel like something that is yours, not a service you subscribe to. Major paid updates have averaged seven years apart (2005, 2010, 2019, 2026), with free updates in between.
Philosophy
PhilosophyWhat’s the meaning of life?
Shower the people you love with love, defend your own dignity, and have good days.