# Solar Mate II vs e

The clearest difference is update cadence: Solar Mate II at every 3 months against e's every 15 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.

Solar Mate II ships an update every 3 months, e every 15 months. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Solar Mate II | e |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/solar-mate-ii/id6449828006/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 15 months |
| Monetization | Free | — |
| Size | 40 MB | 34 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TBB Power Co., Ltd](https://appshunter.io/developer/1089239531) | [Limitless Virtual Pty Ltd](https://appshunter.io/developer/922842180) |

## What reviewers say

### Solar Mate II

[App page](https://appshunter.io/ios/app/solar-mate-ii/id6449828006)

Monitor your solar charger's performance in real-time, view battery and energy data, and access detailed logs. Receive firmware updates to optimize your device's functionality.

**Highlights:** Real-time solar energy data, Battery working status monitoring, On-line firmware updates, Detailed log information, System setting adjustments, Solar charger status understanding

**Features:** macOS Compatibility

**In-app purchases:** none


### e

[App page](https://appshunter.io/ios/app/e-securersa/id6736988558)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Solar Mate II free?

Solar Mate II is free to download, with no in-app purchases.

### Is e free?

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

### Do Solar Mate II or e have ads?

Neither Solar Mate II nor e shows ads.

### Which is updated more often, Solar Mate II or e?

Solar Mate II ships an update every 3 months, and e every 15 months. Most recently, Solar Mate II was updated on October 3, 2026 and e on October 5, 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.*