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Cosmovex 23 free apps on Google Play
Your dev toolkit,
in your pocket.
Code editors, compilers, SSH, JSON, Markdown, PDF — focused Android apps that work offline, need no account, and respect your data. Plus free tools that run right in your browser.
25,000+ downloads
★ 4.5 avg rating
100% free
loved on google play
Start with these
the full shelf
Every app, one per job
⚡
Works offline
Editors, compilers and tools run fully on your device. Airplane mode is fine.
🔒
Private by design
No account, no sign-up walls. Your files stay on your phone.
🎯
One app, one job
Each app does a single thing well — no 200MB do-everything bloat.
💸
Free forever
Every app is free to download and use. No subscriptions, ever.
in your browser · free
The web toolkit
New✁
Background Remover
AI cutouts, on-device
New▦Snapglow
Beautiful screenshots
{ }JSON Formatter
Format, validate & explore JSON
⌥YAML Formatter
Lint, format & convert YAML
</>XML Formatter
Beautify & validate XML
⊞CSV Formatter
View & format CSV tables
⌗SQL Formatter
Format & highlight SQL queries
M↓Markdown Preview
Live Markdown rendering
64Base64
Encode & decode Base64 strings
JWTJWT Decoder
Decode & inspect JWT tokens
%20URL Encoder
Encode & decode URLs
.*Regex Tester
Test & debug regular expressions
notes & tutorials
From the journal
Technology
I Cut My AI Coding Costs by 60% With This One Weird Trick (It's Not Clickbait, I Promise)
!Reduced AI costs
Look, I'll be honest. I was that developer paying for three different AI subscriptions simultaneous…
Raspberry PiDIY Raspberry Pi NAS: exFAT SSD & Samba Sharing
!Home Server on RPI
Ever found your Raspberry Pi running out of storage, or wished you could easily share a large pool…
AIClaude AI vs. Cursor AI: Which Assistant Boosts Your Productivity?
!Claude vs Cursor
In the rapidly evolving landscape of artificial intelligence, tools designed to supercharge our prod…
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