# Tri vs The Document Converter

The clearest difference is review sentiment: Tri at 100% against The Document Converter's 36%. Tri also leads on in-app purchases (none vs 5) and rating (5.0 vs 4.7). The Document Converter's advantage is ads (none vs shown) and ratings volume (5.9K vs 1). On price, device support and iOS requirement there is nothing between them.

Both are free to download. The Document Converter sells 5 in-app purchases, starting at $2.99 per month. Tri asks for nothing beyond the download.

Tri holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: The Document Converter has 5.9K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Tri's written reviews are positive against 36% of The Document Converter's.

Tri ships an update every 12 months, The Document Converter every 5 months. The most recent releases landed on October 3, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Tri | The Document Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tri-func/id496807268/reviews)** | [4.7 (5.9K ratings)](https://appshunter.io/ios/app/the-document-converter/id893322800/reviews) |
| Number of ratings | 1 | **5.9K** |
| Positive reviews | **100.0% of reviews** | 36.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Every 5 months** |
| Monetization | **Ad-supported** | Freemium |
| Size | 4 MB | 44 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Thirdware.jp](https://appshunter.io/developer/464228680) | [Float Tech, LLC](https://appshunter.io/developer/483697886) |

## What reviewers say

### Tri

[App page](https://appshunter.io/ios/app/tri-func/id496807268)

This utility app provides the formula and value for calculating triangle properties. It's designed for quick access to mathematical formulas related to triangles.

**Highlights:** Triangle formula display, Value calculation, Quick access utility, Mathematical formulas

**Features:** Vision Pro support

**In-app purchases:** none


### The Document Converter

[App page](https://appshunter.io/ios/app/the-document-converter/id893322800)

Effortlessly transform files into various document and image formats like PDF, DOCX, and JPG. Simply select your input, choose the desired output, and convert in seconds. Save, share, or open your converted files directly in other applications.

**Highlights:** Convert to PDF, DOCX, JPG, TXT, and more, Supports dozens of input formats, Save, share, or open converted files, In-app file browser, AirDrop support, Cloud and local conversion options

**Features:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Pass | $2.99 | per month |
| Premium Pass | $3.49 | per month |
| Lifetime Pass | $8.99 | one-time |
| Lifetime Pass | $19.99 | one-time |
| Lifetime Pass Promo | $29.99 | one-time |

**What reviewers like**

- 🚀 Fast and efficient
- 👍 Easy to use
- 💡 Useful for document conversion
- 🚀 Reliable and accurate

**What reviewers complain about**

- 🔒 Requires subscription for full functionality
- 🐛 Conversion issues with certain file formats
- 🔒 Misleading about free trial
- 🐛 Inconsistent performance

**Reported bugs**

- Conversion process gets stuck or fails
- Corrupted output files
- Compatibility issues with newer iOS versions

**Requested features**

- Add support for more file formats
- Improve file management and organization
- Provide offline conversion capabilities
- Introduce a more transparent pricing model


## Frequently asked questions

### Is Tri free?

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

### Is The Document Converter free?

The Document Converter is free to download, with in-app purchases available.

### Which has better reviews, Tri or The Document Converter?

Tri is rated higher. Tri averages 5.0 out of 5 from 1 ratings, while The Document Converter averages 4.7 from 5.9K ratings.

### Do Tri or The Document Converter have ads?

Tri shows ads; The Document Converter does not.

### Which is updated more often, Tri or The Document Converter?

Tri ships an update every 12 months, and The Document Converter every 5 months. Most recently, Tri was updated on October 3, 2026 and The Document Converter on October 12, 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.*