Comparison

MarsBrowser vs Synstor Web

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MarsBrowser

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
Read full description

Mars is a fast, focused browser with powerful protection, flexible tab organization, and optional AI tools built around the page you are viewing. CLEANER BROWSING Built-in blocking helps stop ads, trackers, popups, and supported video ads without an extra extension. AI BESIDE THE PAGE Optional AI tools can summarize, explain, and help with the page you are viewing. Features are used only when you invoke them and may require an eligible Mars plan. ROOM FOR EVERY MISSION Keep work, research, and play separate with Spaces. On larger screens, use split view and multiple windows to keep related pages together. PRIVATE BY DESIGN Browse without a Mars account. Content blocking runs on-device, and your browsing history is stored locally by default. MORE OF THE WEB Save downloads, use private tabs, and choose your preferred search engine. SUBSCRIPTIONS AND TERMS Some features require an optional monthly Mars subscription. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel them in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://marbrowser.com/privacy - Support URL: https://marbrowser.com/support - Marketing URL (optional): https://marbrowser.com

About

Synstor Web

Features
Read full description

Synstor is a secure browser for those who value privacy, clarity, and precision. It ensures you are fully protected while surfing the web, keeping your personal data safely encrypted. The browser hides your identity, wipes traces after every session, and prevents websites from following your activity. You can capture full-length screenshots of entire pages — from top to bottom — and store them directly within the app’s secure vault. Each screenshot or file you keep can be encrypted with your personal key, ensuring that no one else can open or copy it. Synstor is built with simplicity in mind: quick toggles for privacy, instant access to your encrypted items, and an interface free from clutter. Whether you need to research privately, archive web content, or protect confidential files, Synstor acts as a shield between you and the digital noise of the modern web.

Screenshots

MarsBrowser4 screens
Synstor Web4 screens

Verdict

The call

The clearest difference is in-app purchases: Synstor Web at none against MarsBrowser's 2. On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MarsBrowser sells 2 in-app purchases, starting at $0.99 per month. Synstor Web asks for nothing beyond the download.

Scorecard1 real difference · 9 level
MarsBrowser versus Synstor Web: the parameters behind the verdict, then further details
ParameterMarsBrowserSynstor Web
PriceFreeFree
Rating4.8 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.616 — better
Further details — not scored
Size226 MB13 MB
Age rating17+17+
DeveloperKeyDataAIFuerte Hambrucken B.V.

In-app purchases

2 purchases

MarsBrowser

Subscriptions2
  • Basic$0.991 Month
  • Mars Live$19.991 Month
None

Synstor Web

No in-app purchases

Questions

Is MarsBrowser free?
MarsBrowser is free to download, with in-app purchases available.
Is Synstor Web free?
Synstor Web is free to download, with no in-app purchases.
Do MarsBrowser or Synstor Web have ads?
Neither MarsBrowser nor Synstor Web shows ads.

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