# ChargeTrack vs OnSun

The clearest difference is in-app purchases: ChargeTrack at none against OnSun's 3. ChargeTrack also leads on update cadence (daily vs every 11 days). OnSun's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. OnSun sells 3 in-app purchases, starting at $2.99 per month. ChargeTrack asks for nothing beyond the download.

ChargeTrack ships an update daily, OnSun every 11 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ChargeTrack | OnSun |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 11 days |
| Size | 33 MB | 47 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [mustafa ates](https://appshunter.io/developer/1811805987) | [VIREO ENERGY PTY LTD](https://appshunter.io/developer/1874785734) |

## What reviewers say

### ChargeTrack

[App page](https://appshunter.io/ios/app/chargetrack/id6748144218)

**Features:** macOS Compatibility

**In-app purchases:** none


### OnSun

[App page](https://appshunter.io/ios/app/onsun-rooftop-solar-forecast/id6758746647)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $2.99 | per month |
| OnSun Pro (Yearly) | $24.99 | per year |
| Pro | $24.99 | per year |


## Frequently asked questions

### Is ChargeTrack free?

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

### Is OnSun free?

OnSun is free to download, with in-app purchases available.

### Do ChargeTrack or OnSun have ads?

ChargeTrack shows ads; OnSun does not.

### Which is updated more often, ChargeTrack or OnSun?

ChargeTrack ships an update daily, and OnSun every 11 days. Most recently, ChargeTrack was updated on October 30, 2026 and OnSun 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.*