Soulver 4 vs CalNote
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Soulver 4
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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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/
CalNote
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Your calendar, as a leather-bound planner. CalNote turns the events in your iPhone Calendar and Reminders into a leather-bound paper planner. No handwriting or Apple Pencil needed: tap to add plans on your iPhone, and decorate big days with stickers and markers (the month page, stickers and markers are free). Your plans are saved right in the iPhone Calendar, so CalNote works alongside the calendar you already use. PAGES YOU CAN FLIP Open the cover and turn the pages. Paper texture, ruled lines, and the curl of the page all feel like a real planner. - Month page (free): a whole month on one page, with all of the selected day's plans in the list below - Two-page week: your week on a vertical timeline across two pages - Weekly grid: seven days in large boxes - Day page: one day, large, on a timeline - Year page: the whole year on one sheet WRITE RIGHT WHERE IT GOES Tap + at the top right, or press and hold an empty spot in a month box or on a timeline to add a plan at that date and time. Save plans you use often as templates. REMINDERS AND NOTES, TOO - Reminders page: see today, overdue, no due date, incomplete, completed, and each list, including reminders without a due date. Pick one on the left page and it opens on the right - Notes page: keep phone numbers, packing lists, and anything you want to look back on, with checkboxes and photos. Place the bookmark on a note to jump straight back to it MARK THE BIG DAYS - Stickers: add them next to a date. New designs are added the more days you open the app - Markers: frame deadlines and big days with a highlighter and a short note - Sticky notes: stick them on the top edge of a page and jump to that month - Bookmark: keep your place and come back from anywhere MAKE IT YOURS Choose the leather color and grain, a name on the cover, paper color, ruled lines, typeface, ink color, how today is marked, and whether weeks start on Monday or Sunday. Lock the planner with Face ID or Touch ID. Home Screen and Lock Screen widgets are included. YOUR PLANS STAY ON YOUR IPHONE No account needed. Plans are saved in your iPhone Calendar and Reminders, notes and photos stay on this iPhone, and nothing is sent to our servers. PRICING The month page, Reminders page, Notes page, stickers, markers, sticky notes, bookmark, templates, and look settings are free. Premium adds the two-page week, weekly grid, day, and year pages, My Stickers, the medium and large Home Screen widgets, and the circular and inline Lock Screen widgets. Choose monthly, yearly (7-day free trial), or a one-time purchase. - Monthly and Yearly Premium are auto-renewing subscriptions. Unless canceled at least 24 hours before the end of the current period, the next period is charged to your Apple ID. You can cancel in your App Store account settings. - When the yearly free trial ends, it automatically becomes a paid subscription. Cancel at least 24 hours before the trial ends and you won't be charged. - Lifetime Premium is a one-time purchase that you keep forever. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://daily-apps-showcase.pages.dev/privacy/calnote/
Screenshots
Verdict
The clearest difference is update cadence: CalNote at every 3 days against Soulver 4's monthly. Soulver 4's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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
Both are free to download. Soulver 4 sells 14 in-app purchases, starting at $26.00 per year and CalNote sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Soulver 4 ships an update monthly, CalNote every 3 days. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.
| Parameter | Soulver 4 | CalNote |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (435 ratings) — better | — |
| Positive reviews | 76.3% of reviews | — |
| Number of ratings | 435 — better | — |
| Update frequency | Monthly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 39 MB | 122 MB |
| Age rating | 4+ | 4+ |
| Developer | Zac Cohan | Atsushi Ito |
Bugs and requests
Soulver 4
Reported bugs
3 issues- 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
Requested features
4 requests- 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
CalNote
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Soulver 4
- AI Assistant, Stocks & Weather$26.001 Year
- Complementary UpgradeFree
- 30-day free trial (for iPhone)Free
- 60-day free trial (for iPad)Free
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- 60-day free trial (for Mac)Free
- Soulver 4 for iPhone (upgrade)$7.49
- Soulver 3 for iPhone$14.00
- Soulver 4 for iPhone$15.00
- Soulver 3 for iPad$20.00
- Soulver 4 (Upgrade from Soulver 3)$29.00
- Soulver 4 (Promotion)$39.00
- Soulver 3 for Mac$39.00
- Soulver 4$54.00
- Soulver 4$59.00
CalNote
- Monthly Premium$1.991 Month
- Yearly Premium7 Days trial$9.991 Year
- Lifetime Premium$19.99









