Control vs MD Viewer
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Control
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Your AI conversations with complete privacy. Control is a free LLM interface that puts you in charge of your AI experience. Chat with lightweight open source language models while keeping your data completely private. These mobile-optimized models offer basic AI assistance with the trade-off of complete privacy and offline functionality - everything runs locally on your device. This is a basic tool. Privacy & Data Protection: All processing happens on your device with no data collection or sharing. Your conversations never leave your phone and no accounts, logins, or cloud storage are required. Works completely offline with zero network dependencies for chat, no tracking or analytics. Your data stays yours and history resets after every session or 24 hours, whichever comes first, ensuring no persistent data storage. Choice: Choose from various open source language models and switch between models instantly to find the perfect AI assistant for your specific needs. Free and open source with no subscriptions or hidden costs.
MD Viewer
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MD Viewer shows Markdown files as clean, readable documents. READ FIRST Every file opens in reading mode. Headings, lists, quotes, tables, code blocks, links and images are rendered natively with the system fonts, your text size and your accent colour. Text is selectable, links open in your browser, and the layout adapts from a phone to a full Mac window. EDIT WHEN YOU WANT Tap Edit to change the source. In Formatted mode the Markdown is styled as you type, with headings large, emphasis rendered, code monospaced and the syntax dimmed, plus a formatting bar for headings, bold, italic, strikethrough, code, links, images, lists, quotes, code blocks, tables and rules. Prefer the raw source? Text mode is a plain editor. Either way the file stays plain Markdown, saved automatically, with undo. YOUR FILES, WHEREVER THEY ARE Files app, iCloud Drive, Finder, Dropbox and other providers, Share, Open With, drag and drop. Multiple windows on iPad and Mac. Keyboard shortcuts including โงโE to toggle editing. PRIVATE BY DESIGN No servers, no analytics, no ads, no tracking. Your documents never leave your device; the only network use is loading images your own document links to. Supports CommonMark plus tables and strikethrough. Requires iOS 17, iPadOS 17 or macOS 14 or later.
Screenshots
Verdict
Control and MD Viewer are too close to call on the numbers: across 6 compared parameters โ price, update cadence, ads and in-app purchases among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Control ships an update every 5 days, MD Viewer weekly. The most recent releases landed on September 29, 2026 and September 23, 2026 respectively.
| Parameter | Control | MD Viewer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days โ better | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, Mac โ better |
| Requires iOS | 18.5 | 17.0 โ better |
| Further details โ not scored | ||
| Size | 9 MB | 5 MB |
| Age rating | 12+ | 4+ |
| Developer | Carlos Tarrats | Enke Solutions LLC |
In-app purchases
Control
No in-app purchases
MD Viewer
No in-app purchases









