# MarsBrowser vs S

MarsBrowser and S 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. MarsBrowser sells 2 in-app purchases, starting at $0.99 per month and S sells 1 in-app purchase, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

MarsBrowser ships an update every 3 days, S every 6 days. The most recent releases landed on October 19, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | MarsBrowser | S |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/marsbrowser/id6761648340/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 6 days |
| Monetization | Free with in-app purchases | — |
| Size | 226 MB | 38 MB |
| Requires iOS | 17.6 | **16.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [KeyDataAI](https://appshunter.io/developer/1890652670) | [UK NEW HOMES LTD](https://appshunter.io/developer/6800064427) |

## What reviewers say

### MarsBrowser

[App page](https://appshunter.io/ios/app/marsbrowser/id6761648340)

A fast and private web browser offering built-in ad and tracker blocking. It provides optional AI tools for summarizing and explaining web pages, along with flexible tab organization features like Spaces and split view.

**Highlights:** Built-in ad and tracker blocking, Optional AI tools for page summarization, Flexible tab organization with Spaces, Split view and multiple windows, Private browsing with local history storage, Download saving and private tabs

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support, SharePlay

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic | $0.99 | per month |
| Mars Live | $19.99 | per month |


### S

[App page](https://appshunter.io/ios/app/s-tools-for-you/id6762290249)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protector Weekly | $9.99 | per 7 days |


## Frequently asked questions

### Is MarsBrowser free?

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

### Is S free?

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

### Do MarsBrowser or S have ads?

Neither MarsBrowser nor S shows ads.

### Which is updated more often, MarsBrowser or S?

MarsBrowser ships an update every 3 days, and S every 6 days. Most recently, MarsBrowser was updated on October 19, 2026 and S on October 3, 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.*