MarsBrowser vs Crest Browser
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MarsBrowser
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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
Crest Browser
Organize your online life with distinct browsing contexts for work, personal use, and private browsing. Each context has its own tabs, history, and data, ensuring a clean separation of your digital activities.
- Isolated browsing contexts (Spaces)
- Separate tabs, history, and cookies per Space
- Customizable Space identity
- Focused sidebar for tabs and history
- Peek for temporary link previews
- Optional iCloud sync
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Work, personal life, and everything between deserve their own Space. Crest is a native browser for iPhone and iPad that keeps your accounts separate, your tabs organized, and your browsing distinctly yours. KEEP YOUR ACCOUNTS SEPARATE Each Space has its own tabs, cookies, website data, history, passwords, and site permissions. Stay signed in to different accounts on the same website. Switch from work to personal browsing without carrying the wrong session with you. GIVE EVERY TAB A PLACE Pin the sites you use every day. Save pages in folders. Keep today's tabs close and completed work in the archive. Select and move tabs, folders, and Split View groups together. On iPhone, bring in the sidebar with a gesture; on iPad, keep it beside your page. MAKE IT YOUR OWN Start with a Winter, Lion, or other crest template in Crest Studio, then change the colors, artwork, and background. Choose a crest, emoji, monogram, or symbol. Look and Feel lets you adjust the sidebar's edge, tab appearance, borders, icon colors, and default page zoom, with a live preview. KEEP RELATED PAGES TOGETHER Group two to four pages in Split View. On iPad, browse them side by side and resize the columns. On iPhone, swipe across the compact toolbar to move between pages in the group. Peek lets you check supported links without losing your place, then keep the page as a tab when you need it. TOOLS FOR EVERYDAY BROWSING Translate webpages on device with Apple's Translation framework. Read supported articles in Reader, find text on a page, adjust zoom, share links, and export pages. Content blocking and site permissions give you control over each Space. Language availability varies, and translation may require a language download. PRIVATE WHEN YOU NEED IT Private Browsing uses temporary website storage. Private tabs stay out of saved history, restoration, archive, and sync. Crest does not run an advertising SDK, collect browsing analytics, or require a Crest account. PICK UP ON ANOTHER DEVICE Optional iCloud sync keeps supported Space and tab organization available across your Apple devices through your private iCloud database. Crest is also available for Mac. Crest is free and open source, built with Apple's WebKit. Requires iOS 26.1 or iPadOS 26.1 or later. Some website features and integrations vary by device.
Screenshots
Verdict
The clearest difference is in-app purchases: Crest Browser at none against MarsBrowser's 2. MarsBrowser's advantage is iOS requirement (17.6 vs 26.1). On price, ads and device support 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
Both are free to download. MarsBrowser sells 2 in-app purchases, starting at $0.99 per month. Crest Browser asks for nothing beyond the download.
| Parameter | MarsBrowser | Crest Browser |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.3 (3 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | — | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 — better | 26.1 |
| Further details — not scored | ||
| Size | 245 MB | 57 MB |
| Age rating | 17+ | 17+ |
| Developer | KeyDataAI | Paul Davis |
In-app purchases
MarsBrowser
- Basic$0.991 Month
- Mars Live$19.991 Month
Crest Browser
No in-app purchases









