# Zonergy Smart vs SD+ charge

The clearest difference is iOS requirement: SD+ charge at 13.0 against Zonergy Smart's 15.0. 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.

Zonergy Smart ships an update every 8 days, SD+ charge every 9 days. The most recent releases landed on October 14, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Zonergy Smart | SD+ charge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 9 days |
| Size | 100 MB | 65 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [兴储世纪科技股份有限公司](https://appshunter.io/developer/1752243430) | [SANDISOLAR RENEWABLE ENERGY DEVELOPMENT INTERNATIONAL COMPANY LIMITED](https://appshunter.io/developer/1880253338) |

## What reviewers say

### Zonergy Smart

[App page](https://appshunter.io/ios/app/zonergy-smart/id6757686934)

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

**In-app purchases:** none


### SD+ charge

[App page](https://appshunter.io/ios/app/sd-plus-charge/id6759696978)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zonergy Smart free?

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

### Is SD+ charge free?

SD+ charge is free to download, with no in-app purchases.

### Do Zonergy Smart or SD+ charge have ads?

Neither Zonergy Smart nor SD+ charge shows ads.

### Which is updated more often, Zonergy Smart or SD+ charge?

Zonergy Smart ships an update every 8 days, and SD+ charge every 9 days. Most recently, Zonergy Smart was updated on October 14, 2026 and SD+ charge on October 31, 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.*