# HAIDI vs Pro

The clearest difference is update cadence: Pro at fortnightly against HAIDI's every 32 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.

HAIDI ships an update every 32 months, Pro fortnightly. Both last shipped on September 29, 2026.

## The numbers

| Metric | HAIDI | Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Fortnightly** |
| Size | 11 MB | 1 MB |
| Requires iOS | **14.0** | 14.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [SHENZHEN SMARTEC TECHNOLOGY COMPANY LIMITED](https://appshunter.io/developer/1190436409) | [Haidi Energy Tehcnogy Co., Ltd](https://appshunter.io/developer/1645467042) |

## What reviewers say

### HAIDI

[App page](https://appshunter.io/ios/app/haidi/id1528654656)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pro

[App page](https://appshunter.io/ios/app/pro-user/id6504571751)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HAIDI free?

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

### Is Pro free?

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

### Do HAIDI or Pro have ads?

Neither HAIDI nor Pro shows ads.

### Which is updated more often, HAIDI or Pro?

HAIDI ships an update every 32 months, and Pro fortnightly. Most recently, HAIDI was updated on September 29, 2026 and Pro on September 29, 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.*