# Write a letter vs CRM Synthesis

The clearest difference is price: Write a letter at Free against CRM Synthesis's $4.99. CRM Synthesis's advantage is in-app purchases (none vs 3) and update cadence (every 10 days vs every 3 months). On ads, device support and iOS requirement there is nothing between them.

Write a letter is free to download; CRM Synthesis costs $4.99 up front. Write a letter sells 3 in-app purchases, starting at $2.99 per month. CRM Synthesis asks for nothing beyond the download.

Write a letter ships an update every 3 months, CRM Synthesis every 10 days. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Write a letter | CRM Synthesis |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.0 (29 ratings)](https://appshunter.io/ios/app/write-a-letter/id912523076/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 27.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 28 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jan-Hendrik Damerau](https://appshunter.io/developer/725299865) | [Outer Planet Labs LLC](https://appshunter.io/developer/304428595) |

## What reviewers say

### Write a letter

[App page](https://appshunter.io/ios/app/write-a-letter/id912523076)

Create professional letters quickly and easily. Save them as PDFs for emailing, printing, or sharing. Customize your letters with formatting, templates, and fonts to match your style.

**Highlights:** Professional letter creation, PDF export, Email, print, and share options, Customizable templates, Text formatting, Signature integration, Sender address management

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Annual Premium | $22.99 | per year |
| Lifetime Premium | $39.99 | one-time |


### CRM Synthesis

[App page](https://appshunter.io/ios/app/crm-synthesis/id6786048464)

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

**In-app purchases:** none


## Frequently asked questions

### Is Write a letter free?

Write a letter is free to download, with in-app purchases available.

### Is CRM Synthesis free?

CRM Synthesis costs $4.99, with no in-app purchases.

### Do Write a letter or CRM Synthesis have ads?

Neither Write a letter nor CRM Synthesis shows ads.

### Which is updated more often, Write a letter or CRM Synthesis?

Write a letter ships an update every 3 months, and CRM Synthesis every 10 days. Most recently, Write a letter was updated on November 1, 2026 and CRM Synthesis on October 27, 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.*