# HaiDi Pro vs i

The clearest difference is update cadence: HaiDi Pro at every 2 months against i's every 19 months. On price, review sentiment, 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.

HaiDi Pro ships an update every 2 months, i every 19 months. The most recent releases landed on October 20, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | HaiDi Pro | i |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/haidi-pro/id6443414754/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 19 months |
| Monetization | Free | Free |
| Size | 122 MB | 34 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Haidi Energy Tehcnogy Co., Ltd](https://appshunter.io/developer/1645467042) | [i-tecc batteries GmbH](https://appshunter.io/developer/1699629525) |

## What reviewers say

### HaiDi Pro

[App page](https://appshunter.io/ios/app/haidi-pro/id6443414754)

Monitor and manage your lithium battery packs via Bluetooth. View detailed status information, set protection parameters, and receive real-time alerts for abnormalities. Access historical alarm records for troubleshooting.

**Highlights:** Connect via Bluetooth, Read battery pack status, View voltage, current, temperature, Set protection parameters, Receive abnormality alarms, Historical alarm records

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

**In-app purchases:** none


### i

[App page](https://appshunter.io/ios/app/i-tecc-plus-bms/id6453992900)

Monitor your i-tecc+ LiFePO4 batteries with detailed insights. Track state of charge, capacity, power usage, temperature, and charge cycles. Essential for managing battery health and performance.

**Highlights:** Monitor state of charge, Track battery capacity, View power consumption, Check battery temperature, Record charge cycles, LiFePO4 battery information

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HaiDi Pro free?

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

### Is i free?

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

### Do HaiDi Pro or i have ads?

Neither HaiDi Pro nor i shows ads.

### Which is updated more often, HaiDi Pro or i?

HaiDi Pro ships an update every 2 months, and i every 19 months. Most recently, HaiDi Pro was updated on October 20, 2026 and i on October 8, 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.*