# Soulver 4 vs CalcDraw

The clearest difference is in-app purchases: CalcDraw at none against Soulver 4's 14. Soulver 4's advantage is ratings volume (435 vs 4). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Soulver 4 sells 14 in-app purchases, starting at $26.00 per year. CalcDraw asks for nothing beyond the download.

Soulver 4 holds the better App Store score, 4.9 against 4.8. That said, the two scores are not equally well evidenced: Soulver 4 has 435 ratings behind it against 4, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Soulver 4 | CalcDraw |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (435 ratings)](https://appshunter.io/ios/app/soulver-4/id1508732804/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/calcdraw/id1566813135/reviews) |
| Number of ratings | **435** | 4 |
| Positive reviews | 76.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Paid | **Ad-supported** |
| Size | 39 MB | 43 MB |
| Requires iOS | 17.6 | **16.6** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Zac Cohan](https://appshunter.io/developer/1508732803) | [dai kawaguchi](https://appshunter.io/developer/1329440953) |

## What reviewers say

### Soulver 4

[App page](https://appshunter.io/ios/app/soulver-4/id1508732804)

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.

**Highlights:** 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

**Features:** Family Sharing, Vision Pro support

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Assistant, Stocks & Weather | $26.00 | per year |
| Complementary Upgrade | Free | 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 (upgrade) | $7.49 | one-time |
| Soulver 3 for iPhone | $14.00 | one-time |
| Soulver 4 for iPhone | $15.00 | one-time |
| Soulver 3 for iPad | $20.00 | one-time |
| Soulver 4 (Upgrade from Soulver 3) | $29.00 | one-time |
| Soulver 4 (Promotion) | $39.00 | one-time |
| Soulver 3 for Mac | $39.00 | one-time |
| Soulver 4 | $54.00 | one-time |
| Soulver 4 | $59.00 | one-time |

**What reviewers like**

- 💻 Powerful calculation tool
- 📝 Seamless note-taking integration
- 🔢 Intuitive natural language input
- 🗂️ Organized folder and sheet management
- ⚙️ Extensive unit conversion capabilities

**What reviewers complain about**

- 💰 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

**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

**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


### CalcDraw

[App page](https://appshunter.io/ios/app/calcdraw/id1566813135)

This free tool lets you write notes and perform calculations simultaneously. Easily capture ideas and share results instantly. Enjoy a smooth and intuitive math workflow.

**Highlights:** Write and solve math problems, Take notes alongside calculations, Instant sharing of results, Intuitive and stress-free workflow, Copy results to clipboard

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Soulver 4 free?

Soulver 4 is free to download, with in-app purchases available.

### Is CalcDraw free?

CalcDraw is free to download, with no in-app purchases.

### Which has better reviews, Soulver 4 or CalcDraw?

Soulver 4 is rated higher. Soulver 4 averages 4.9 out of 5 from 435 ratings, while CalcDraw averages 4.8 from 4 ratings.

### Do Soulver 4 or CalcDraw have ads?

Neither Soulver 4 nor CalcDraw shows ads.

### Which is updated more often, Soulver 4 or CalcDraw?

Soulver 4 ships an update monthly, and CalcDraw monthly. Most recently, Soulver 4 was updated on October 29, 2026 and CalcDraw on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*