# Solar.on vs MarsES

Solar.on and MarsES are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on September 22, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Solar.on | MarsES |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Size | 98 MB | 192 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [鑫 俞](https://appshunter.io/developer/1714265333) | [卓文 梁](https://appshunter.io/developer/1759304348) |

## What reviewers say

### Solar.on

[App page](https://appshunter.io/ios/app/solaron/id6479601705)

**Features:** macOS Compatibility

**In-app purchases:** none


### MarsES

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Solar.on free?

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

### Is MarsES free?

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

### Do Solar.on or MarsES have ads?

Neither Solar.on nor MarsES shows ads.

### Which is updated more often, Solar.on or MarsES?

Solar.on ships an update every 4 months, and MarsES every 4 months. Most recently, Solar.on was updated on September 22, 2026 and MarsES on September 10, 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.*