# leaDCalc vs Paper2Audio

The clearest difference is in-app purchases: leaDCalc at none against Paper2Audio's 2. Paper2Audio's advantage is update cadence (every 5 days vs every 7 months) and ratings volume (776 vs 1). On price, rating, ads and device support there is nothing between them.

Both are free to download. Paper2Audio sells 2 in-app purchases, starting at $20.00 per month. leaDCalc asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for leaDCalc against 4.9 for Paper2Audio. That said, the two scores are not equally well evidenced: Paper2Audio has 776 ratings behind it against 1, so its average is the more settled of the two.

leaDCalc ships an update every 7 months, Paper2Audio every 5 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | leaDCalc | Paper2Audio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/leadcalc/id1487509498/reviews)** | [4.9 (776 ratings)](https://appshunter.io/ios/app/paper2audio-text-to-speech/id6737539427/reviews) |
| Number of ratings | 1 | **776** |
| Positive reviews | — | 97.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 159 MB | 69 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vaughn Warriner](https://appshunter.io/developer/1487509497) | [Paper2Audio](https://appshunter.io/developer/1777001061) |

## What reviewers say

### leaDCalc

[App page](https://appshunter.io/ios/app/leadcalc/id1487509498)

This app calculates DC power lead sizes for telephone company central office power plants. It uses a circular slide rule format to determine allowable voltage drops and wire sizes based on specific system parameters.

**Highlights:** Circular slide rule format, Calculates allowable voltage drops, Determines DC power lead sizes, Supports 48V and 24V DC systems, References Bell System calculations, Informational use guide

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

**In-app purchases:** none


### Paper2Audio

[App page](https://appshunter.io/ios/app/paper2audio-text-to-speech/id6737539427)

Listen to your documents, articles, and ebooks with advanced text-to-speech technology. It intelligently skips irrelevant content and summarizes visual elements, making learning hands-free and productive. Enjoy natural voices and a familiar interface for an enhanced listening experience.

**Highlights:** Reads PDFs, webpages, ebooks, .docx, .txt, Summarizes math, code, tables, and figures, Intelligently skips junk text and ads, High-quality, natural text-to-speech voices, Document summarization and context addition, Highlighting, notes, and table of contents navigation, Adjustable playback speed

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Paper2Audio Plus Monthly | $20.00 | per month |
| Paper2Audio Plus Annual | $191.99 | per year |

**What reviewers like**

- 🗣️ Natural voices
- 👍 Intuitive interface
- 🚀 Efficient text extraction
- 💯 Excellent for academic/technical content
- 🆓 Completely free with no hidden fees

**What reviewers complain about**

- 🔍 Occasional issues with formatting/layout
- 📓 Lacks support for footnotes/citations
- 🌐 Limited compatibility with other formats (Kindle, etc.)

**Reported bugs**

- Occasional issues with chapter/section detection in long documents

**Requested features**

- Add support for footnotes and citations
- Implement custom pronunciation dictionary
- Improve handling of multilingual content
- Expand compatibility to more file formats


## Frequently asked questions

### Is leaDCalc free?

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

### Is Paper2Audio free?

Paper2Audio is free to download, with in-app purchases available.

### Which has better reviews, leaDCalc or Paper2Audio?

leaDCalc is rated higher. leaDCalc averages 5.0 out of 5 from 1 ratings, while Paper2Audio averages 4.9 from 776 ratings.

### Do leaDCalc or Paper2Audio have ads?

Neither leaDCalc nor Paper2Audio shows ads.

### Which is updated more often, leaDCalc or Paper2Audio?

leaDCalc ships an update every 7 months, and Paper2Audio every 5 days. Most recently, leaDCalc was updated on November 3, 2026 and Paper2Audio on November 4, 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.*