# HW Link V2 vs TATTU

The clearest difference is rating: HW Link V2 at 3.4 against TATTU's 1.0. HW Link V2 also leads on review sentiment (30% vs 0%) and ratings volume (35 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HW Link V2 holds the better App Store score, 3.4 against 1.0. That said, the two scores are not equally well evidenced: HW Link V2 has 35 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 30% of HW Link V2's written reviews are positive against 0% of TATTU's.

HW Link V2 ships an update every 3 months, TATTU every 2 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | HW Link V2 | TATTU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (35 ratings)](https://appshunter.io/ios/app/hw-link-v2/id1539374531/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/tattu/id6476337515/reviews) |
| Number of ratings | **35** | 1 |
| Positive reviews | **29.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 47 MB | 4 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hobbywing Technology Co.,Ltd](https://appshunter.io/developer/1033124554) | [Shenzhen Grepow Battery Co.Ltd.](https://appshunter.io/developer/1714028930) |

## What reviewers say

### HW Link V2

[App page](https://appshunter.io/ios/app/hw-link-v2/id1539374531)

This application allows users to wirelessly program ESC parameters on compatible car, aircraft, and boat electronic speed controllers. Connect via a WiFi module or OTA Programmer to adjust settings remotely from your smartphone.

**Highlights:** Wireless ESC programming, Remote parameter adjustment, Smartphone control, Supports car, aircraft, and boat ESCs, Compatible with HW WiFi express module/OTA Programmer

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

**In-app purchases:** none


### TATTU

[App page](https://appshunter.io/ios/app/tattu/id6476337515)

This utility app provides battery management system (BMS) functions for smart batteries. It allows users to monitor and control battery parameters. Designed for efficient battery operation and maintenance.

**Highlights:** Battery Management System (BMS), Smart battery monitoring, Battery parameter control, Efficient battery operation, Battery maintenance functions

**In-app purchases:** none


## Frequently asked questions

### Is HW Link V2 free?

HW Link V2 is free to download, with no in-app purchases.

### Is TATTU free?

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

### Which has better reviews, HW Link V2 or TATTU?

HW Link V2 is rated higher. HW Link V2 averages 3.4 out of 5 from 35 ratings, while TATTU averages 1.0 from 1 ratings.

### Do HW Link V2 or TATTU have ads?

Neither HW Link V2 nor TATTU shows ads.

### Which is updated more often, HW Link V2 or TATTU?

HW Link V2 ships an update every 3 months, and TATTU every 2 months. Most recently, HW Link V2 was updated on November 3, 2026 and TATTU on November 4, 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.*