# TATTU vs DataLink V3

The clearest difference is update cadence: TATTU at every 2 months against DataLink V3's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.

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

TATTU ships an update every 2 months, DataLink V3 every 9 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | TATTU | DataLink V3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/tattu/id6476337515/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | Free | — |
| Size | 4 MB | 8 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Grepow Battery Co.Ltd.](https://appshunter.io/developer/1714028930) | [Hobbywing Technology Co.,Ltd](https://appshunter.io/developer/1033124554) |

## What reviewers say

### 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


### DataLink V3

[App page](https://appshunter.io/ios/app/datalink-v3/id6752997274)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TATTU free?

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

### Is DataLink V3 free?

DataLink V3 is free to download, with no in-app purchases.

### Do TATTU or DataLink V3 have ads?

Neither TATTU nor DataLink V3 shows ads.

### Which is updated more often, TATTU or DataLink V3?

TATTU ships an update every 2 months, and DataLink V3 every 9 months. Most recently, TATTU was updated on October 24, 2026 and DataLink V3 on October 14, 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.*