Soulver 4 vs Scratch
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/
Scratch
A fast and simple note-taking app for capturing ideas, drafting messages, or saving temporary text. It automatically saves your work and offers advanced text correction using AI. Easily copy, paste, share, or clear your notes.
- Automatic saving of all notes
- AI-powered spelling, grammar, and punctuation correction
- One-tap text copying
- Clipboard pasting
- Sharing to other applications
- Customizable appearance modes and colors
- Adjustable text size and haptic feedback
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Scratch es un espacio sencillo y rápido donde puedes escribir cualquier cosa justo cuando la necesitas. Úsala para apuntar una idea, preparar un mensaje, guardar un texto temporal o escribir algo que después quieras copiar y utilizar en otra aplicación. Todo lo que escribas se guarda automáticamente para que puedas volver más tarde sin perderlo. También puedes corregir la ortografía, la gramática y la puntuación de tus textos mediante Apple Intelligence. La corrección conserva el idioma, el significado y el tono original del contenido. Desde su barra de herramientas puedes: • Copiar el texto con un toque. • Pegar contenido desde el portapapeles. • Compartirlo con otras aplicaciones. • Borrar todo cuando quieras empezar de nuevo. Cuando aparece el teclado, la barra de herramientas se coloca automáticamente sobre él para que todas las acciones sigan estando siempre a mano. Además, Scratch permite personalizar el modo de apariencia, el color de la interfaz, el tamaño del texto y la respuesta háptica. Una aplicación directa, cuidada y sin distracciones para escribir, corregir y compartir.
Screenshots
Verdict
The clearest difference is price: Soulver 4 at Free against Scratch's $1.99. Soulver 4 also leads on ratings volume (429 vs 1) and iOS requirement (17.6 vs 26.0). Scratch's advantage is in-app purchases (none vs 14) and update cadence (every 2 days vs monthly). On rating, ads, monetization model and device support 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
Soulver 4 is free to download; Scratch costs $1.99 up front. Soulver 4 sells 14 in-app purchases, starting at $26.00 per year. Scratch asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for Soulver 4 against 5.0 for Scratch. That said, the two scores are not equally well evidenced: Soulver 4 has 429 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 76% of Soulver 4's written reviews are positive against 100% of Scratch's.
Soulver 4 ships an update monthly, Scratch every 2 days. The most recent releases landed on October 19, 2026 and October 12, 2026 respectively.
| Parameter | Soulver 4 | Scratch |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.9 (429 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 76.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 429 — better | 1 |
| Update frequency | Monthly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 17.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 39 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Zac Cohan | Fran Besora Malo |
Customer experience
Soulver 4
Scratch
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
Scratch
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
Scratch
No in-app purchases








