# TWS Drone vs Letter Printer

The clearest difference is iOS requirement: TWS Drone at 15.6 against Letter Printer's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. TWS Drone sells 1 in-app purchase, starting at $0.99 per month and Letter Printer sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

TWS Drone ships an update every 6 weeks, Letter Printer every 5 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | TWS Drone | Letter Printer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/letter-printer-pdf-writer/id6774979466/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 25 MB | 7 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [AeroDev (Pty) Ltd](https://appshunter.io/developer/1581931254) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### TWS Drone

[App page](https://appshunter.io/ios/app/tws-drone/id1671833344)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Subscription | $0.99 | per month |


### Letter Printer

[App page](https://appshunter.io/ios/app/letter-printer-pdf-writer/id6774979466)

Create professional printed letters directly from your iPhone. Choose from 12 templates and customize layout, fonts, and letterheads for various formal and personal correspondence needs. Save addresses and export as PDF or print via AirPrint.

**Highlights:** 12 pre-made letter templates, Customizable letterhead styles and typefaces, Adjustable margins and text size, On-screen preview matching print output, Built-in address book for senders/recipients, PDF export and AirPrint compatibility

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cover & Resume Weekly | $2.99 | per 7 days |
| AirPrint Stationery Yearly | $14.99 | per year |
| Formal Correspondence Forever | $29.99 | one-time |


## Frequently asked questions

### Is TWS Drone free?

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

### Is Letter Printer free?

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

### Do TWS Drone or Letter Printer have ads?

Neither TWS Drone nor Letter Printer shows ads.

### Which is updated more often, TWS Drone or Letter Printer?

TWS Drone ships an update every 6 weeks, and Letter Printer every 5 weeks. Most recently, TWS Drone was updated on November 7, 2026 and Letter Printer on October 31, 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.*