StealthOS vs ChronoCalc Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StealthOS
This app provides a secure, private browsing experience with advanced anti-fingerprinting, built-in Tor, and encrypted storage. It offers an on-device AI assistant and a virtual desktop environment for enhanced productivity and research.
- Anti-fingerprinting technology
- Built-in Tor browser
- AES-256 encrypted storage
- On-device AI assistant
- Virtual desktop environment
- Password manager with TOTP
- AI-powered phishing detection
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Private browser with Tor, PGP encryption, password manager and encrypted vault in one app. No account, no ads, no tracking. Your data stays encrypted on your iPhone. StealthOS puts a whole private workspace inside iOS: a browser that resists fingerprinting and warns you about phishing, real PGP for your messages, AES-256 storage for your files and passwords, built-in Tor, and end-to-end encrypted chat with voice and video. All of it behind an app lock with Face ID and a recovery key. PGP AND OPENPGP ENCRYPTION Real PGP, not a lookalike. What you write here opens in the tools everyone else uses. - Encrypt, decrypt, sign and verify with OpenPGP - Works with GnuPG, GPG, Proton Mail, Thunderbird and Kleopatra - Ed25519, Curve25519, Brainpool and RSA keys up to 4096 bit - Keyring with fingerprint verification, so you know who you are writing to - Share a public key or an encrypted message as a .asc file - Spot PGP blocks on a web page and open them in one tap PRIVATE BROWSER - Anti-fingerprint protection for Canvas, WebGL, Audio, Fonts, Timezone, Screen and Navigator - Phishing warnings for fake login pages, scam sites and look-alike domains - Block any website from reaching your camera or microphone - WebRTC leak blocking and HTTPS-first browsing - Encrypted history, bookmarks and downloads, with session restore - Address bar suggestions computed offline, so what you type stays on the device - DNS-over-HTTPS and proxy support TOR BROWSER BUILT IN - Tor with .onion support, no second app to install - Kill switch if Tor or your proxy drops - New circuit on demand PASSWORD MANAGER AND ENCRYPTED VAULT - AES-256-GCM storage with keys protected by the Secure Enclave - Fills usernames, passwords and two-factor codes into websites - Password generator and strength scoring - TOTP two-factor codes with QR scanning - File manager for documents, photos and downloads, with an image, video and Markdown viewer ENCRYPTED CHAT, VOICE AND VIDEO - End-to-end encrypted messaging, voice calls and video calls - Peer-to-peer nearby, or through a relay when you are apart - Open-source StealthRelay you can host yourself - Route the app's traffic through your own relay - Pools stay alive while you are offline, so friends keep talking APP LOCK, SNAPSHOTS AND DURESS - App lock with password, Face ID and a one-time recovery key - One encrypted snapshot holds your files, passwords, notes, browser data and settings - Locked with your passkey alone, so it restores after a reset or a new install - Keep it in Files or iCloud Drive. We keep no copy and cannot recover it for you - Duress password that wipes everything on entry AI ASSISTANT - Writing, coding, tutoring, planning, research and analysis profiles - Voice mode, web research, calculator, weather and file tools - Runs on device. Needs iOS 26 or later with Apple Intelligence NOTES, DESKTOP AND TOOLS - Notes with voice, reminders, transcription, summaries and checklists - Virtual desktop with movable windows, folders and themes, on iPhone and iPad - 15+ built-in apps and multiplayer games PREMIUM - Up to 10 device fingerprint profiles - SSH Terminal and Linux Shell - Code Editor with syntax highlighting - NetMap network inspector PRIVACY BY DESIGN - No account, no sign-up, no email - No ads and no tracking across apps or websites - Your files, passwords, notes and history are encrypted on your device - Core features work with no connection at all Terms of Use: https://www.stealthos.app/terms Privacy Policy: https://www.stealthos.app/privacy
ChronoCalc Pro
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The simplest and most powerful way to calculate time. Perfect for pilots, freelancers, consultants, and anyone who needs to track and calculate hours with precision. FEATURES: - Pro Time Math - Add, subtract, multiply, and divide time values effortlessly. - Live Preview - See the result as you type. Tap = to save it. - Flexible Time Input - Enter time your way: 1h30m, 1:30, or with a comma. The first time you type a comma, you choose what it means: 7,5 as 7h 30m (decimal hours) or as 7h 5m (hours and minutes). - Instant Decimal Conversion - Switch between standard time (1h 30m) and decimal hours (1.50 hrs) right next to the result, with customizable decimal precision. - History - Your last 100 calculations, one tap to reuse a result. On iPad, a full-height history panel grouped by day. Delete single entries or clear it all. - Clear Error Messages - Plain-language hints show what went wrong and which line to fix. - CSV Import/Export - Import time logs or export your calculation history, with a configurable delimiter (comma, semicolon, or tab). Timesheets work in English, Norwegian, Swedish, Danish, German, French, and Spanish. - Quick Copy - Copy the result to your clipboard with a single tap. - Designed for iPhone and iPad - Layouts for portrait and landscape, with Liquid Glass on iOS 26. - Accessible - VoiceOver reads times in whole words and announces every result. Keys support Dynamic Type and the Large Content Viewer, and animations respect Reduce Motion. - Your Language - Available in English, Norwegian, Swedish, Danish, German, French, and Spanish. - Smart & Robust - Handles negative time values and seconds with correct formatting. PERFECT FOR: - Pilots: Logging flight hours and calculating block time. - Freelancers & Consultants: Tracking billable hours and creating invoices. - Project Managers: Calculating project durations and resource timing. - Anyone: Converting time formats, adding up timesheets, or any task that involves time math. No ads. No subscriptions. Your data is 100% private and never leaves your device.
Screenshots
Verdict
The clearest difference is in-app purchases: ChronoCalc Pro at none against StealthOS's 2. StealthOS's advantage is update cadence (weekly vs every 5 months). 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
Both are free to download. StealthOS sells 2 in-app purchases, starting at $4.99 per month. ChronoCalc Pro asks for nothing beyond the download.
StealthOS ships an update weekly, ChronoCalc Pro every 5 months. Both last shipped on October 28, 2026.
| Parameter | StealthOS | ChronoCalc Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (10 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Weekly — better | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 221 MB | 4 MB |
| Age rating | 17+ | 4+ |
| Developer | Olib AI | ERLEND JOHNSRUD VAAGE |
In-app purchases
StealthOS
- Monthly Premium$4.991 Month
- Yearly Premium$49.991 Year
ChronoCalc Pro
No in-app purchases
Questions
Is StealthOS free?
Is ChronoCalc Pro free?
Do StealthOS or ChronoCalc Pro have ads?
Which is updated more often, StealthOS or ChronoCalc Pro?
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