# Calca vs BoldSign Document Scanner

The clearest difference is price: BoldSign Document Scanner at Free against Calca's $9.99. BoldSign Document Scanner also leads on in-app purchases (none vs 2) and update cadence (every 3 weeks vs every 5 months). On ads and device support there is nothing between them.

BoldSign Document Scanner is free to download; Calca costs $9.99 up front. Calca sells 2 one-off in-app purchases. BoldSign Document Scanner asks for nothing beyond the download.

Calca ships an update every 5 months, BoldSign Document Scanner every 3 weeks. The most recent releases landed on September 25, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Calca | BoldSign Document Scanner |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.5 (153 ratings)](https://appshunter.io/ios/app/calca/id635757879/reviews)** | — |
| Number of ratings | **153** | — |
| Positive reviews | 76.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 78 MB | 37 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Krueger Systems, Inc.](https://appshunter.io/developer/299293363) | [Syncfusion Inc.](https://appshunter.io/developer/552884035) |

## What reviewers say

### Calca

[App page](https://appshunter.io/ios/app/calca/id635757879)

This app is an advanced symbolic calculator and text editor. It solves equations, simplifies expressions, and allows you to explain your work alongside calculations. Calculations update instantly as you type, and all data is stored as plain text for easy sharing and device syncing.

**Highlights:** Symbolic calculation, Equation solving, Expression simplification, Markdown text editor, Real-time updates, Unit and currency conversion, Matrix operations

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6-Month Optional Patronage | $4.99 | one-time |
| 12-Month Optional Patronage | $7.99 | one-time |

**What reviewers like**

- 💡 Unique blend of text editor and calculator
- 📝 Markdown support for documentation
- 🔄 Dynamic recalculation of all values
- ⚙️ Powerful mathematical and algebraic capabilities
- 📊 Unit conversion and unit-aware calculations

**What reviewers complain about**

- 🐛 Magic Keyboard input bugs on iPad
- ⚠️ Appears abandoned or poorly maintained
- 🐛 Text selection issues with external keyboards
- 📱 iPad landscape mode problems
- 🐛 Cursor jumping and screen jumping during editing

**Reported bugs**

- Magic Keyboard causes number input to overwrite instead of append
- Text selection before numbers triggers increment/decrement instead of selecting
- Cursor jumps forward and backward with external keyboards
- iPad Pro keyboard truncation in portrait mode
- Arrow key (=>) doesn't work in landscape mode

**Requested features**

- Files app and document browser integration
- Dropbox and Google Drive support
- Date calculation functionality
- Looping and iteration support
- User-defined function storage in separate files


### BoldSign Document Scanner

[App page](https://appshunter.io/ios/app/boldsign-document-scanner/id6762363864)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calca free?

Calca costs $9.99, and also offers in-app purchases.

### Is BoldSign Document Scanner free?

BoldSign Document Scanner is free to download, with no in-app purchases.

### Do Calca or BoldSign Document Scanner have ads?

Neither Calca nor BoldSign Document Scanner shows ads.

### Which is updated more often, Calca or BoldSign Document Scanner?

Calca ships an update every 5 months, and BoldSign Document Scanner every 3 weeks. Most recently, Calca was updated on September 25, 2026 and BoldSign Document Scanner on September 18, 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.*