# Carbon Voice vs Letterform

The clearest difference is in-app purchases: Letterform at none against Carbon Voice's 10. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Carbon Voice sells 10 in-app purchases, starting at $6.99 per month. Letterform asks for nothing beyond the download.

## The numbers

| Metric | Carbon Voice | Letterform |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (15 ratings)](https://appshunter.io/ios/app/carbon-voice-talk-async/id1567782769/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 174 MB | 47 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Phonon X Inc](https://appshunter.io/developer/1567782771) | [Good Code Club](https://appshunter.io/developer/6784948752) |

## What reviewers say

### Carbon Voice

[App page](https://appshunter.io/ios/app/carbon-voice-talk-async/id1567782769)

This app allows teams to communicate asynchronously through voice messages that are transcribed and AI-summarized. It replaces phone calls with quick voice notes, making conversations searchable and actionable. Integrates with over 8,000 tools for seamless workflow management.

**Highlights:** Asynchronous voice messaging, Automatic transcription, AI conversation summaries, Action item tracking, Integration with 8,000+ tools, Cross-language auto-translation, Searchable voice memos

**Features:** macOS Compatibility, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter + Global Voice | $6.99 | per month |
| Lite | $10.99 | per month |
| Standard | $17.99 | per month |
| Standard + Global Voice | $23.99 | per month |
| Pro | $26.99 | per month |
| Lite | $84.99 | per year |
| Lite + Global Voice | $149.99 | per year |
| Standard | $155.99 | per year |
| Standard + Global Voice | $219.99 | per year |
| Pro | $259.99 | per year |


### Letterform

[App page](https://appshunter.io/ios/app/letterform-markdown-editor/id6785308938)

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

**In-app purchases:** none


## Frequently asked questions

### Is Carbon Voice free?

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

### Is Letterform free?

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

### Do Carbon Voice or Letterform have ads?

Neither Carbon Voice nor Letterform shows ads.

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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.*