# xFormula vs DjVu to PDF

The clearest difference is review sentiment: xFormula at 84% against DjVu to PDF's 0%. xFormula also leads on monetization model (free with in-app purchases vs subscription) and rating (3.9 vs 3.4). DjVu to PDF's advantage is iOS requirement (14.0 vs 16.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. xFormula sells 4 in-app purchases, starting at $1.99 per month and DjVu to PDF sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

xFormula holds the better App Store score, 3.9 against 3.4. That said, the two scores are not equally well evidenced: xFormula has 55 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 84% of xFormula's written reviews are positive against 0% of DjVu to PDF's.

xFormula ships an update every 3 weeks, DjVu to PDF every 11 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | xFormula | DjVu to PDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (55 ratings)](https://appshunter.io/ios/app/xformula-equation-editor/id1477136751/reviews)** | [3.4 (5 ratings)](https://appshunter.io/ios/app/djvu-to-pdf/id6453854158/reviews) |
| Number of ratings | **55** | 5 |
| Positive reviews | **84.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 11 months |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 56 MB | 4 MB |
| Requires iOS | 16.1 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [煦 张](https://appshunter.io/developer/494537607) | [Kshitija Wagh](https://appshunter.io/developer/1697593745) |

## What reviewers say

### xFormula

[App page](https://appshunter.io/ios/app/xformula-equation-editor/id1477136751)

Create and edit mathematical equations with a visual interface. Export your work as images, LaTeX, MathML, or UnicodeMath for use in documents and presentations. Features include image recognition, formula libraries, and custom keyboards.

**Highlights:** Visual equation editing, Export to image, LaTeX, MathML, UnicodeMath, Image recognition for formulas, Organized formula libraries, Customizable keyboard for symbols, Keyboard extension for other apps

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro 1 Month (Auto-Renewable) | $1.99 | per month |
| Advanced (Lifetime) | $9.99 | one-time |
| Basic (Lifetime) | $11.99 | one-time |
| Pro (Lifetime) | $18.99 | one-time |


### DjVu to PDF

[App page](https://appshunter.io/ios/app/djvu-to-pdf/id6453854158)

Easily convert DjVu files to PDF format with this user-friendly application. It offers fast, high-quality conversions, ensuring your documents remain intact and universally compatible. Ideal for students and professionals needing to simplify document management.

**Highlights:** Fast DjVu to PDF conversion, High-quality output preservation, Intuitive user interface, Secure file processing, Universal PDF compatibility, Easy file sharing

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access | $6.99 | per month |
| All Access | $29.99 | per year |


## Frequently asked questions

### Is xFormula free?

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

### Is DjVu to PDF free?

DjVu to PDF is free to download, with in-app purchases available.

### Which has better reviews, xFormula or DjVu to PDF?

xFormula is rated higher. xFormula averages 3.9 out of 5 from 55 ratings, while DjVu to PDF averages 3.4 from 5 ratings.

### Do xFormula or DjVu to PDF have ads?

Neither xFormula nor DjVu to PDF shows ads.

### Which is updated more often, xFormula or DjVu to PDF?

xFormula ships an update every 3 weeks, and DjVu to PDF every 11 months. Most recently, xFormula was updated on November 7, 2026 and DjVu to PDF on November 3, 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.*