# MarsES vs 2E Smart Energy

The clearest difference is update cadence: 2E Smart Energy at every 4 weeks against MarsES's every 4 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.

MarsES ships an update every 4 months, 2E Smart Energy every 4 weeks. The most recent releases landed on October 15, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | MarsES | 2E Smart Energy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 weeks** |
| Size | 192 MB | 198 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [卓文 梁](https://appshunter.io/developer/1759304348) | [ERC Distribution](https://appshunter.io/developer/1594287278) |

## What reviewers say

### MarsES

[App page](https://appshunter.io/ios/app/marses/id6578447579)

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

**In-app purchases:** none


### 2E Smart Energy

[App page](https://appshunter.io/ios/app/2e-smart-energy/id6670430732)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MarsES free?

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

### Is 2E Smart Energy free?

2E Smart Energy is free to download, with no in-app purchases.

### Do MarsES or 2E Smart Energy have ads?

Neither MarsES nor 2E Smart Energy shows ads.

### Which is updated more often, MarsES or 2E Smart Energy?

MarsES ships an update every 4 months, and 2E Smart Energy every 4 weeks. Most recently, MarsES was updated on October 15, 2026 and 2E Smart Energy on October 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*