Cosmovex

Android · iPhone & iPad · Browser

Away from your desk? Edit code, files and servers from your phone.

26 focused apps on Android, 16 of them on iPhone and iPad too — and 8 browser tools for when you are back at a desk.

Android & iPhone appsBrowser tools
AndroidGoogle PlayiPhone & iPadApp Store
HTML Viewer & Editor on Android: page source above, the rendered page below
AgentPager on Android: a Claude Code request waiting for Allow or Deny
Markdown Editor on Android: a trip note in split view, Markdown source above and the preview below
Real screens: the Markdown Editor, HTML Viewer & Editor and AgentPager on Android, in front of Mock API Studio in a browser.
26
Android apps on Google Play
16
of them on iPhone & iPad
8
browser tools, nothing to install
4.7 out of 5
Markdown Editor, 66 ratings on Google Play
39
step-by-step guides

Hunting for the right app? All 27 are on one screen.

One app per job. Tap an icon for screenshots and details.

Google PlayApp Store

Left your laptop mid-task? Start with these four.

The Markdown editor, AgentPager — our newest app — and the two most installed.

Markdown Editor

Notes stuck on your phone? Write Markdown there and open the same file on your laptop.

Live preview, tables, code blocks and Mermaid diagrams, with export to HTML or PDF. Live Server shows the file in a laptop browser over Wi‑Fi.

5K+ downloads 4.7 out of 5 (66 ratings)

Google PlayApp StoreAbout the app

Markdown Editor & MD Viewer screenshot

AgentPagerNew

Your coding agent is waiting for an answer. Approve it from your phone.

Claude Code and Codex keep running on your computer; AgentPager shows what needs you and sends your reply back.

Google PlayAbout the app

AgentPager: Claude Code & Codex on your phone screenshot

WebEva

No laptop to build a website? Write HTML, CSS and JavaScript on your phone and preview it.

5K+ downloads 4.4 out of 5 (19 ratings)

Google PlayApp StoreAbout the app

WebEva: Build Websites & Code screenshot

On an iPhone or iPad? 16 of the apps are on the App Store.

Each one opens on iPhone and iPad, with the same files and features as on Android.

All on the App Store

Need one tool for one file type? Filter every app and browser tool.

Live on Google Play, the App Store, the web, or several. Tap one for details.

35 apps and tools

Back at your desk? These tools open in a browser tab, nothing to install.

Free to use, with no account. Each runs at tools.cosmovexapps.com.

All browser tools

Not sure which app opens your file? Pick the task and see the app.

Each page explains one task on Android and which app does it.

Code & run

11

Files & data

10

Servers & network

6

Web & design

5

Documents

3

Productivity

6

Stuck on a task? Follow a guide to the working result.

Step-by-step answers to the questions people search for.

All 39 guides

Questions before you install? Answers here.

Something else? Write to us and include the app name and your device.

Contact Cosmovex
Are the apps free?

Yes. Every app is free to install and use. Most show ads; an optional Pro upgrade removes them and unlocks extra features. The price is shown in the app before you pay.

Do my files leave my phone?

The editors and viewers open files on your device and work on them there. Data only leaves the phone when you use a feature that needs a network, such as SSH, an API request, AI assistance or sharing. Apps with ads use Google AdMob, and each app's privacy policy lists what it collects.

Are the apps on iPhone and iPad?

Yes, 16 of them are on the App Store for iPhone and iPad: Markdown Editor, WebEva, XML Editor, HTML Editor, PDF Editor, SQLite Editor, ShellPilot (SSH), JavaScript Editor, SVG Editor, API Client, JSON Editor, CSV Editor, Code Editor, DevBuddy, HostPilot and LayerPeek, a 3D-print file viewer that is only on iPhone and iPad. The other 11 (Python IDE, Java & Kotlin IDE, YAML Editor, Network Toolkit, Zip Extractor, PromptCrate, AgentPager, Diagram Maker, QR Scanner, Aspenote and C/C++ Compiler) are Android only for now.

Do the apps work offline?

Most editors and viewers work without a connection once installed; the Python, Java, JavaScript and C/C++ apps run code on the device itself. Features that talk to another machine, such as SSH, REST requests, network tests and AI, need a connection.

Who makes these apps?

Cosmovex. We build and maintain every app on this page, and write the guides on this site.

How do I get support?

Write to us from the Contact page and include the app name, your device and its Android or iOS version. Bug reports and feature requests are read and answered. Contact Cosmovex