# WattUp vs BlueSim

The clearest difference is price: WattUp at Free against BlueSim's $4.99. WattUp also leads on iOS requirement (12.4 vs 16.6). BlueSim's advantage is rating (5.0 vs 4.2) and update cadence (every 2 weeks vs every 5 weeks). On ratings volume, ads, in-app purchases and device support there is nothing between them.

WattUp is free to download; BlueSim costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

BlueSim holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 5 and 4 respectively.

WattUp ships an update every 5 weeks, BlueSim every 2 weeks. The most recent releases landed on September 21, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | WattUp | BlueSim |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [4.2 (5 ratings)](https://appshunter.io/ios/app/wattup/id1576818379/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/bluesim-bluetooth-simulator/id1662190389/reviews)** |
| Number of ratings | **5** | 4 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#146** |
| Size | 22 MB | 6 MB |
| Requires iOS | **12.4** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Energous Corporation](https://appshunter.io/developer/1576818381) | [Brandon Fraune](https://appshunter.io/developer/1662190391) |

## What reviewers say

### WattUp

[App page](https://appshunter.io/ios/app/wattup/id1576818379)

This application allows users to scan for and connect to wireless charging devices using Bluetooth. It enables configuration, control, and monitoring of transmitters and receivers, along with software updates for enabled devices.

**Highlights:** Scan for WattUp enabled devices, Connect via Bluetooth Low Energy (BLE), Configure transmitters and receivers, Control charging devices, Monitor device status, Update device software

**Features:** Vision Pro support

**In-app purchases:** none


### BlueSim

[App page](https://appshunter.io/ios/app/bluesim-bluetooth-simulator/id1662190389)

**Currently charting:** #146 Top Paid · Developer Tools (US App Store)

Simulate a Bluetooth Low Energy peripheral to test or debug other devices. Send custom data to a central device, facilitating development and troubleshooting.

**Highlights:** Bluetooth LE peripheral simulation, Custom data transfer, Device testing and debugging, Supports central/host devices, iPhone and iPad compatible

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

**In-app purchases:** none


## Frequently asked questions

### Is WattUp free?

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

### Is BlueSim free?

BlueSim costs $4.99, with no in-app purchases.

### Which has better reviews, WattUp or BlueSim?

BlueSim is rated higher. WattUp averages 4.2 out of 5 from 5 ratings, while BlueSim averages 5.0 from 4 ratings.

### Do WattUp or BlueSim have ads?

Neither WattUp nor BlueSim shows ads.

### Which is updated more often, WattUp or BlueSim?

WattUp ships an update every 5 weeks, and BlueSim every 2 weeks. Most recently, WattUp was updated on September 21, 2026 and BlueSim on September 12, 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.*