# Soulver 4 — Notepad, meet calculator. > A notepad calculator for everyday math problems with natural language functions and live data. (iPhone/iPad app by Zac Cohan.) - Source: https://appshunter.io/ios/app/soulver-4/id1508732804 (this page in markdown: same URL + `.md`) - Developer: [Zac Cohan](https://appshunter.io/developer/1508732803) - Category: Productivity, Business - Price: Free with in-app purchases - Rating: 4.90/5 from 420 App Store ratings · 236 written reviews indexed - Age rating: 4+ - Requires: iOS 17.6 · 37 MB - Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Russian, Chinese (Simplified, China), European Spanish - Released: 2020-05-03 - Data updated: 2026-09-01 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/soulver-4/id1508732804/reviews.md ## What is Soulver 4? Ever reach for a calculator and the back of an envelope to work something out? That's what Soulver is for. It's a natural-language notepad calculator: think through a problem line-by-line, using plain words and numbers. The answers appear alongside each line as you type. Soulver isn't just a calculator app — it's the paper you'd scribble on to figure something out. Except this paper does the numbers for you, so you stay thinking at the level of your problem. 20% of $1,480 | $296 $100 in EUR | €86 240 km in miles | 149 mi $1,200 + 15% tax | $1,380 3 weeks from today | June 21 Because Soulver uses sheets (like Notes), you can explore different ideas: weigh options, change variables and watch everything update. WHAT CAN SOULVER CALCULATE? – Live currency conversions — 190 currencies, including crypto – Percentages in plain language — "20% off $50", "$50 is what % of $200" – Unit conversions — hundreds of units across length, weight, volume, data and more – Dates & time — "days until Christmas", time intervals, clock and video-timecode math – Time-zone conversions — "3pm New York to London" – Sums & averages – Financial functions — compound interest, mortgage repayments, hourly rates It's the closest thing to an on-device universal calculator ever created. DESIGNED FOR IPHONE – A meticulously designed numeric keyboard that makes calculating fast – Six specialised accessory keyboards — for currencies, percentages, dates & times, and variables – Build your own custom keyboard with the buttons you reach for most BEST-IN-CLASS ON IPAD – Multiple windows, Slide Over & Split View — float Soulver alongside Notes or Safari – Full Magic Keyboard support with dozens of keyboard shortcuts – Scribble & Apple Pencil – Find & replace, a line-styling palette and a powerful text editor – Automation with URL schemes & Siri Shortcuts POWER USER FEATURES – Multi-word variables — "total cost = $750" – Inline tokenized references to previous answers – Subtotals, tags & trip planning – Wolfram|Alpha integration – Headings, comments, labels & dividers to structure long sheets – Custom units and global variables in the definition sheet SHARING & SYNC – Sync your sheets with Soulver 4 for Mac via iCloud – Export to PDF & plain text, or send beautiful HTML emails – Share a calculation as an image — just take a screenshot ONE TIME PURCHASE Soulver is a one-time (non-subscription) purchase. We've been refining and improving Soulver since 2005, and major paid updates average once every 7 years. Try it free for 60 days, no commitment, no automatic charge. —————————————————————————————— Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Key features - Natural language calculations - Unit and currency conversions - Date and time math - Live currency and stock prices - Customizable accessory keyboards - Spreadsheet-like line references - Variables and conditional statements ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | AI Assistant, Stocks & Weather | $26.00 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Complementary Upgrade | Free | one-time | | Soulver 3 for iPad | $20.00 | one-time | | Soulver 3 for iPhone | $14.00 | one-time | | 30-day free trial (for iPhone) | Free | one-time | | 60-day free trial (for iPad) | Free | one-time | | 60-day free trial (for Mac) | Free | one-time | | Soulver 4 for iPhone | $15.00 | one-time | | Soulver 4 for iPhone (upgrade) | $7.49 | one-time | | Soulver 4 | $59.00 | one-time | | Soulver 4 | $54.00 | one-time | | Soulver 4 (Upgrade from Soulver 3) | $29.00 | one-time | | Soulver 3 for Mac | $39.00 | one-time | ## What do users think of Soulver 4? Overall sentiment: positive **Pros** - 💻 Powerful calculation tool - 📝 Seamless note-taking integration - 🔢 Intuitive natural language input - 🗂️ Organized folder and sheet management - ⚙️ Extensive unit conversion capabilities - 🤖 Helpful AI integration (with subscription) - 🧠 Indispensable for professionals and students - 🔍 Detailed and responsive customer support **Cons** - 💰 Expensive one-time purchase price - 🔁 Separate purchases for Mac, iPad, and iPhone - 🤖 AI integration requires additional subscription - 🐛 Occasional crashes and bugs reported - 📊 Limited spreadsheet-like functionality **Commonly reported bugs** - Crashes when using certain emojis in sheet titles - Issues with iCloud sync and data migration from older versions - Inconsistent behavior when modifying variables and formulas **Most requested features** - Improved iPad and iPhone UI/UX - Enhanced data export and sharing options - More advanced mathematical and scientific functions - Ability to define custom units and unit conversions ## Recent user reviews (10 of 236) All indexed reviews: https://appshunter.io/ios/app/soulver-4/id1508732804/reviews.md ### 4/5 — Impressed *2026-08-12, version 4.0.2* Great app.Much improved,especially impressed with customer support ### 5/5 — Best calculator by far *2026-07-31, version 4.0.2* Love this calculator. It’s so good. Only wish is to add a setting to bring back the old keyboard layout. I cannot get over my muscle memory from old versions. ### 5/5 — Best calculator I’ve ever used, and I’ve used a lot of them *2026-07-21, version 4.0.2* I’m an accountant, so a good calculator is absolutely critical. Soulver is so much better than any other calculator I’ve used before. I’m not sure there is anything it can’t calculate, and I only use a fraction of its features. I also really like that it keeps a history of everything I’ve done to refer to later, and screenshot or print for documentation. ### 5/5 — Worth every single penny!! *2026-07-20, version 4.0.2* First off I wasn’t paid off in any way to leave this review I just truly love the work the developer has done with this app. Thank you for not giving into the AI and making a subscription out of it. ### 5/5 — Excellent piece of software *2026-07-20, version 4.0.2* Thank you for this. ### 5/5 — Excel and Google sheets for Dummies *2026-07-18, version 4.0.1* I have never learned excel and I am terrible at google sheets. After a few minutes of learning the Soulver workflow, I can now easily create Soulver sheets to track expenses or predict cashflow very easily. I do wish there was a way to export it to google sheets or excel and it would automatically be populated in all the cells, columns, rows so I could easily share with my non-soulver friends. It would also be nicety have the ability to have short cuts to jump to different parts of the sheet or be able to view it in outline form. ### 5/5 — Both easy and powerful *2026-07-14, version 4.0.1* I’ve been using Soulver for years and years. I’ve tracked sales tax, and overtime for my taxes. Managed our cash drawer with it and figured the size of a cabinet I was building. It on my personal Mt Rushmore of Mac apps. ### 5/5 — Essential *2026-07-12, version 4.0.1* I’ve been a Soulver user since version 1 and it’s remained an essential part of my every day suite of applications I work with. As indispensable to me as my terminal application and vim. I love watching colleagues eye’s light up when I pull up Soulver in a technical discussion to do my “napkin math”. The v4 update looks amazing. And the universal binary is just a nice thing to do. If it had stopped at v3 I was already completely happy. So this is all just feeling like (literally) Christmas in July right now for a die hard Soulver fan! ### 5/5 — Don’t miss the Soulver 4 upgrade; it’s a homerun *2026-07-11, version 4.0.1* I've used Soulver for years and thought it was already close to a finished product. Version 4 makes that look like a starting point. The new trip planning workflow alone is worth it — set a start and end date and Soulver maps out your days at each stop and warns you if you overshoot. Beyond that, there's a huge wave of new natural-language calculations (tax, inflation, distance, physics, etc….), smarter calendar math, tags for tracking expenses, custom variables and units, better sheet organization, and a AI-friendly command line for scripting sheets. And I LOVE that it is a universal app now — one purchase covers Mac, iPad, and iPhone instead of three. For an upgrade this substantial, that's remarkable. Whoever's building this clearly isn't coasting. Easy recommend, and easily worth the price. ### 5/5 — Ver 4 - Great app that gets better and better *2026-07-11, version 4.0.1* I’ve just updated from ver 3 to ver 4. It’s a paid-for upgrade (the first for a very long time). 50% discount for the upgrade. Stupendous value for money. I use this app everyday. The update process (on Mac, iPhone and iPad) is very easy. The app uses natural language and is so well designed it is a joy to use. I have different saved sheets for different tasks (Trig, Electrical calcs, finance, proportions, EV range calcs, percentages, etc) and find Soulver so much more convenient than spreadsheets. Everything syncs instantly between devices. ## Frequently asked questions about Soulver 4 ### What does Soulver 3 do? Soulver 3 is a notepad calculator designed to simplify everyday math problems. It supports natural language functions for calculations, unit conversions, date and time math, and live currency conversions. You can also organize your calculations in sheets with text comments and share them as PDFs. ### What are the key features of Soulver 3? Key features include natural language calculations, over 300 unit conversions, live currency and stock price conversions, date and time math, business day calculations, and customizable accessory keyboards. It also offers spreadsheet-like line references, variables, and conditional statements for advanced workflows. ### How much does Soulver 3 cost? Soulver 3 is a one-time purchase and is not a subscription. This is the first paid version for iPad and iPhone since the original release in 2009. ### Is Soulver 3 compatible with older versions? Yes, you can import your Soulver 2 files by tapping the '+' button and selecting them from Files. iCloud syncing is also available with Soulver 3 for Mac. ### What are some common use cases for Soulver 3? Common use cases include calculating discounts, converting units for cooking or DIY projects, planning travel with date and time math, managing personal finances with financial functions, and working with video time codes. The natural language input makes it easy to handle a wide range of everyday calculations. ## Version history (last 5 releases) ### 4.0.2 — 2026-07-20 – Added a trackpad feature to move the cursor, similar to the behaviour of the spacebar when held down in the system keyboard (hold down on the "2" key to activate) – Fixed an issue with the cursor keys direction movement in Arabic & Hebrew right-to-left text (thanks Thabet) CALCULATOR – Fixed an issue affecting words containing slashes intended as comments (thanks Chuck) – Fixed a bug where upstream trip segment lines might not update until edited (thanks Jim) – Fixed a bug with typing performance in a sheet with many trip segments (thanks Youssef) ### 4.0.1 — 2026-06-28 – Minor bug fixes Soulver 4 is our biggest update in seven years, with 50+ new features, including: NEW WORKFLOWS – Trip planning: plan for dates spent in each destination, and get an alert when you exceed your planned trip length – Tags: label lines with #hashtags and do totals or averages across the tag CUSTOMIZABILITY – The definition sheet: a dedicated sheet to define global variables & new unit types – Redesigned settings window, with 20+ additional settings to further personalize your Soulver experience, including answer column color & alignment NEW EDITOR FEATURES – Dividers: structure long sheets with section dividers – Line highlighting: highlight from eight delightful colors to make important lines stand out SHEET MANAGEMENT – Pin sheets to the top of a folder – Archive sheets you no longer want to edit MONEY CALCULATIONS – Sales tax: calculate the amount of sales tax in an amount – Income tax: calculate the amount of tax paid in a given country – Inflation: calculate how much an amount from the past is worth today SCIENTIFIC CALCULATIONS – New units for calculating pressure, chemistry calculations, force & acceleration – New units for electrical calculations (resistance, potential, current, charge, inductance, capacitance, conductance, flux) VEHICLE CALCULATIONS – Angular velocity & torque units – Fuel efficiency & fuel consumption units CALENDAR CALCULATIONS – Support for calculations involving cultural events (Christmas, Ramadan, Chinese New Year, etc.) – Format dates using format patterns – Improvements to work hour calculations CHANGE OVER TIME – File downloading functions: "time to download 3GB @ 10 MB/s" (= 5 minutes) – Linear growth functions: "time from $20k to $40k at $2k every month" (= 10 months) – Exponential growth functions: "time from 20k to 100k at 10% growth per month" (= 16.8 months) GEOGRAPHY CALCULATIONS – Calculate distance between places – DMS (degrees, minutes, seconds) – Get the GPS location for a given city or airport iPHONE KEYBOARD – Hold down on the "9" key to activate the cursor pad from the popup. You get arrow keys for all cardinal directions, move to start/end, bump line buttons, and forward delete – Added a subtle … to keys that offer additional options via a popup (triggered by a long press) ### 4.0 — 2026-06-23 Soulver 4 is our biggest update in seven years, with 50+ new features, including: NEW WORKFLOWS – Trip planning: plan for dates spent in each destination, and get an alert when you exceed your planned trip length – Tags: label lines with #hashtags and do totals or averages across the tag CUSTOMIZABILITY – The definition sheet: a dedicated sheet to define global variables & new unit types – Redesigned settings window, with 20+ additional settings to further personalize your Soulver experience, including answer column color & alignment NEW EDITOR FEATURES – Dividers: structure long sheets with section dividers – Line highlighting: highlight from eight delightful colors to make important lines stand out SHEET MANAGEMENT – Pin sheets to the top of a folder – Archive sheets you no longer want to edit MONEY CALCULATIONS – Sales tax: calculate the amount of sales tax in an amount – Income tax: calculate the amount of tax paid in a given country – Inflation: calculate how much an amount from the past is worth today SCIENTIFIC CALCULATIONS – New units for calculating pressure, chemistry calculations, force & acceleration – New units for electrical calculations (resistance, potential, current, charge, inductance, capacitance, conductance, flux) VEHICLE CALCULATIONS – Angular velocity & torque units – Fuel efficiency & fuel consumption units CALENDAR CALCULATIONS – Support for calculations involving cultural events (Christmas, Ramadan, Chinese New Year, etc.) – Format dates using format patterns – Improvements to work hour calculations CHANGE OVER TIME – File downloading functions: "time to download 3GB @ 10 MB/s" (= 5 minutes) – Linear growth functions: "time from $20k to $40k at $2k every month" (= 10 months) – Exponential growth functions: "time from 20k to 100k at 10% growth per month" (= 16.8 months) GEOGRAPHY CALCULATIONS – Calculate distance between places – DMS (degrees, minutes, seconds) – Get the GPS location for a given city or airport iPHONE KEYBOARD - Hold down on the "9" key to activate the cursor pad from the popup. You get arrow keys for all cardinal directions, move to start/end, bump line buttons, and forward delete - Added a subtle … to keys that offer additional options via a popup (triggered by a long press) ### 3.16.2 — 2026-05-18 Sunrise & Sunset: - Get sunrise, sunset, and daylight hours for any place — `sunrise in Tokyo`, `sunset in Paris on Dec 21`, `daylight hours in Reykjavik` Quarters: - Support for expressions using “quarter”, like `next quarter`, `last quarter` (e.g. `days until next quarter`) Superscripts: - Support for superscript exponent characters: `100²` → `100^2` Bug Fixes: - Improved the accuracy of one particular exponent-related calculation (thanks Harry) ### 3.16.1 — 2026-05-01 - Improved "Sheets & Syncing" settings - Fixed a few minor issues that popped up in the 3.16 release ## Apps similar to Soulver 4 | App | Rating | Price | Category | | --- | --- | --- | --- | | [iCalc: Photo Math Calculator](https://appshunter.io/ios/app/icalc-photo-math-calculator/id6448191549) | 4.4 (354) | Free | Productivity | | [NotePlan - To-Do List & Notes](https://appshunter.io/ios/app/noteplan-to-do-list-and-notes/id1505432629) | 4.8 (1,500) | Free | Productivity | | [Superlist: To Do List & Notes](https://appshunter.io/ios/app/superlist-to-do-list-and-notes/id1547585270) | 4.5 (445) | Free | Productivity | | [BusyCal: Calendar & Tasks](https://appshunter.io/ios/app/busycal-calendar-and-tasks/id1035689743) | 4.7 (4,432) | $9.99 | Productivity | | [Quick Notes - Capture](https://appshunter.io/ios/app/quick-notes-capture/id6458535284) | 4.8 (268) | Free | Productivity | | [Due - Reminders & Timers](https://appshunter.io/ios/app/due-reminders-and-timers/id390017969) | 4.7 (2,781) | $7.99 | Productivity | ## Related topics [4 sough](https://appshunter.io/ios/topics/4-sough) · [iviewer 4](https://appshunter.io/ios/topics/iviewer-4) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*