# SynthAI Draw vs BLE Controller

The clearest difference is in-app purchases: BLE Controller at none against SynthAI Draw's 2. BLE Controller also leads on device support (3 vs 1) and iOS requirement (12.0 vs 18.0). On price, update cadence and ads there is nothing between them.

Both are free to download. SynthAI Draw sells 2 in-app purchases, starting at $17.99 per month. BLE Controller asks for nothing beyond the download.

SynthAI Draw ships an update every 4 weeks, BLE Controller every 2 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SynthAI Draw | BLE Controller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (26 ratings)](https://appshunter.io/ios/app/ble-controller-arduino-esp32/id6754522781/reviews)** |
| Number of ratings | — | **26** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 65 MB | 64 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Xinglv Yundong Intelligent Technology Co., Ltd.](https://appshunter.io/developer/1836304626) | [CircuitMagic Inc.](https://appshunter.io/developer/1848639668) |

## What reviewers say

### SynthAI Draw

[App page](https://appshunter.io/ios/app/synthai-draw/id6752033225)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $17.99 | per month |
| Yearly | $29.99 | per year |


### BLE Controller

[App page](https://appshunter.io/ios/app/ble-controller-arduino-esp32/id6754522781)

This app enables wireless control of microcontrollers like Arduino and ESP32 via Bluetooth Low Energy. It features a customizable remote interface, a serial console for real-time data monitoring, and device management tools for makers and hobbyists.

**Highlights:** Customizable button interface, Real-time serial console, Device scanning and management, Bi-directional communication, Offline functionality, Dark and light themes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SynthAI Draw free?

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

### Is BLE Controller free?

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

### Do SynthAI Draw or BLE Controller have ads?

Neither SynthAI Draw nor BLE Controller shows ads.

### Which is updated more often, SynthAI Draw or BLE Controller?

SynthAI Draw ships an update every 4 weeks, and BLE Controller every 2 weeks. Most recently, SynthAI Draw was updated on October 25, 2026 and BLE Controller on October 24, 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.*