Soulver 4

Soulver 4

Notepad, meet calculator.

405 ratings
215 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • May 3, 2020
  • June 28, 2026

Features

Soulver 4 screenshot #1 for iPhone
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Soulver 4 screenshot #5 for iPhone
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Soulver 4 screenshot #8 for iPhone
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About

This app combines the functionality of a notepad with a powerful calculator. It allows users to perform complex calculations using natural language, supports unit conversions, date math, and live currency conversions. Organize your calculations in sheets with text comments and share them as PDFs.

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
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What users say

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What's New in Soulver 4

4.0.1

June 28, 2026

– 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)

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Subscription plans

AI Assistant, Stocks & Weather

Wolfram|Alpha & advanced stock & weather data

$26.001 Year
Price Updates
July 15, 2026$26.00
October 2, 2025$30.00
April 15, 2025$26.00
How to cancel Soulver 4 subscription ⁉️
2

In-App Purchases

Free

Complementary Upgrade

A free upgrade for recent purchasers

User reviews

À ce prix, le support du français devrait être meilleur

Mon expérience avec Soulver 4 est plutôt mitigée. Le concept est intéressant, mais l’utilisation du langage dit « naturel » demande en réalité un certain apprentissage. Il faut souvent consulter la documentation ou mémoriser la syntaxe pour exploiter correctement les fonctionnalités.
Par ailleurs, l’application est clairement plus aboutie en anglais. Certaines expressions fonctionnent dans cette langue mais je n’ai pas trouvé leur équivalent en français, malgré mes recherches dans la documentation. Par exemple, je n’ai jamais réussi à reproduire en français une requête comme « 430 to 387 is what % ». Une simple comparaison des guides de référence français et anglais montre d’ailleurs un écart important.
J’ai également constaté que certaines fonctionnalités de la version 4 ne sont pas disponibles en français (je n’ai pas testé celles réservées aux abonnés).
Au final, si vous privilégiez une utilisation en français, je trouve que Soulver 4 ne justifie pas son prix de 69 €. Pour ma part, comme avec la version 3, je me contenterai de la version d’essai.
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Ok en anglais mais le français n’est pas au top

Toutes les fonctionnalités ne semblent pas avoir été implémentées en français : par exemples « 359 to 428 is what % » je n’ai jamais trouvé le texte français qui donne le bon résultat, ni même dans la documentation. A date, hormis que c’est « rigolo »; je n’ai pas trouvé d’utilité à cette application. Donc elle restera à l’étape du test pour mon cas.
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false advertising

I have been using the Soulver Calc app for a long time, and I kinda like it. A pop-up window appears in Soulver 3, basically saying Soulver 4 is available on the App Store for $29.00. I can provide a screenshot and save 50% as an upgrader. After installation, I learned that the upgrade price is $39.00, which is 40% of the full price of $69.00.

This is classic false advertising. Shame.
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Response from developer

Apologies Arhangelazarus, $29 is the upgrade price in USD which is 50% off the full sale price. The final upgrade price the App Store presents you with in your local currency in other countries depends on the exchange rate & local taxes, which Apple takes into account when setting the equivalent price. In any case, you're invited to upgrade at a big discount, and you're also welcome to keep using Soulver 3. I think leaving a one-star review is not very kind or justified here.

Love Soulver!

Couldn’t get through a day without it. Thanks for a great app!

Response from developer

🫶

Незаменимая аппка

Пользуюсь много лет на телефоне и маках. Считаю всё на свете. Веду кучу заметок с цифрами и расчетами. Каждый день запускаю, настолько быстро и удобно

User experience

🐞

Reported Bugs

3 issues

Crashes when using certain emojis in sheet titles

Bug

Issues with iCloud sync and data migration from older versions

Bug

Inconsistent behavior when modifying variables and formulas

Bug

Requested Features

4 requests

Improved iPad and iPhone UI/UX

Feature

Enhanced data export and sharing options

Feature

More advanced mathematical and scientific functions

Feature

Ability to define custom units and unit conversions

Feature

FAQ

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.