# Bluetooth for Arduino vs WA PDF

The clearest difference is iOS requirement: WA PDF at 15.5 against Bluetooth for Arduino's 18.5. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Bluetooth for Arduino sells 5 one-off in-app purchases and WA PDF sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Bluetooth for Arduino | WA PDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (42 ratings)](https://appshunter.io/ios/app/bluetooth-for-arduino/id1505096526/reviews)** | — |
| Number of ratings | **42** | — |
| Positive reviews | 45.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 78 MB |
| Requires iOS | 18.5 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Giuseppe Migliore](https://appshunter.io/developer/1505096105) | [CHN TECHNOLOGIES PRIVATE LIMITED](https://appshunter.io/developer/6780368295) |

## What reviewers say

### Bluetooth for Arduino

[App page](https://appshunter.io/ios/app/bluetooth-for-arduino/id1505096526)

Transform your iPhone or iPad into a wireless remote control for your Arduino projects. Easily connect to your Bluetooth module and send custom commands via keyboard or pre-designed buttons.

**Highlights:** Bluetooth remote control, Arduino project control, Custom command sending, Keyboard input, Button interface, Connect to Bluetooth modules

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $0.99 | one-time |
| Custom | $3.99 | one-time |
| Gamepad | $3.99 | one-time |
| Terminal | $3.99 | one-time |
| Unlock everything | $11.99 | one-time |


### WA PDF

[App page](https://appshunter.io/ios/app/wa-pdf/id6780368293)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WA PDF Pro — Monthly | $3.99 | per month |
| WA PDF Pro — Yearly | $39.99 | per year |


## Frequently asked questions

### Is Bluetooth for Arduino free?

Bluetooth for Arduino is free to download, with in-app purchases available.

### Is WA PDF free?

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

### Do Bluetooth for Arduino or WA PDF have ads?

Neither Bluetooth for Arduino nor WA PDF shows ads.

### Which is updated more often, Bluetooth for Arduino or WA PDF?

Bluetooth for Arduino ships an update every 2 months, and WA PDF every 2 months. Most recently, Bluetooth for Arduino was updated on November 7, 2026 and WA PDF on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*