# HAIDI vs SmartBat

The clearest difference is update cadence: SmartBat at every 3 months against HAIDI's every 32 months. SmartBat also leads on iOS requirement (11.0 vs 14.0). 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, SmartBat every 3 months. The most recent releases landed on September 29, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | HAIDI | SmartBat |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 3 months** |
| Size | 11 MB | 16 MB |
| Requires iOS | 14.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [SHENZHEN SMARTEC TECHNOLOGY COMPANY LIMITED](https://appshunter.io/developer/1190436409) | [Nanchang Yepai Technology Co., Ltd.](https://appshunter.io/developer/1503296093) |

## What reviewers say

### HAIDI

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

**Features:** macOS Compatibility

**In-app purchases:** none


### SmartBat

[App page](https://appshunter.io/ios/app/smartbat-pro/id1635790293)

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

**In-app purchases:** none


## Frequently asked questions

### Is HAIDI free?

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

### Is SmartBat free?

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

### Do HAIDI or SmartBat have ads?

Neither HAIDI nor SmartBat shows ads.

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

HAIDI ships an update every 32 months, and SmartBat every 3 months. Most recently, HAIDI was updated on September 29, 2026 and SmartBat on October 11, 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.*