# MarsBrowser vs Lens

The clearest difference is ratings volume: Lens at 54 against MarsBrowser's 8. MarsBrowser's advantage is iOS requirement (17.6 vs 26.0). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. MarsBrowser sells 2 in-app purchases, starting at $0.99 per month and Lens sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for MarsBrowser against 4.9 for Lens. That said, the two scores are not equally well evidenced: Lens has 54 ratings behind it against 8, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on November 9, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | MarsBrowser | Lens |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (8 ratings)](https://appshunter.io/ios/app/marsbrowser/id6761648340/reviews) | [4.9 (54 ratings)](https://appshunter.io/ios/app/lens-simple-private-browser/id6817076945/reviews) |
| Number of ratings | 8 | **54** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | Every 2 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 227 MB | 67 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 17+ | 17+ |
| Developer | [KeyDataAI](https://appshunter.io/developer/1890652670) | [Maximos Angelakis](https://appshunter.io/developer/1809161226) |

## 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 mode, On-device content blocking

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

**In-app purchases (2)**

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


### Lens

[App page](https://appshunter.io/ios/app/lens-simple-private-browser/id6817076945)

A private web browser focused on speed and simplicity. It blocks ads and trackers by default, offers customizable search engine options, and features automatic tab archiving. Enhanced privacy controls include Face ID protection for private tabs.

**Highlights:** Search-first interface, Ad and tracker blocking, Customizable search engines, Automatic tab archiving, Face ID protected private tabs, Link preview and translation

**Features:** Apple Wallet, Vision Pro support, iPhone Duo support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $3.99 | one-time |
| Coffee & Snack | $6.99 | one-time |
| Lunch | $14.99 | one-time |
| Big Thank-You | $29.99 | one-time |


## Frequently asked questions

### Is MarsBrowser free?

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

### Is Lens free?

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

### Which has better reviews, MarsBrowser or Lens?

MarsBrowser and Lens are both rated 4.9 out of 5 on the App Store, from 8 and 54 ratings respectively.

### Do MarsBrowser or Lens have ads?

Neither MarsBrowser nor Lens shows ads.

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

MarsBrowser ships an update every 2 days, and Lens every 2 days. Most recently, MarsBrowser was updated on November 9, 2026 and Lens on November 12, 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.*