Mexger — AI apps that build real things
AI apps that build real things
Mexger brings together AI apps that turn a sentence into something real: a 3D part you can export and print, a circuit with working code and a PCB you can order, a better prompt, a private conversation.
Free, running on open models (GPT-OSS 120B / 20B, Qwen), with your own keys for the rest. New apps join as they are built.
Questions
What is Mexger?
One place for AI apps that make real things: CAD Studio for 3D parts, Aimplify for circuits, code, simulation and PCBs, UlChats for talking with someone the way they talk, Textem for private chats, and PromptArm for better prompts. Everything runs in your browser.
Is Mexger free?
Yes. Every app runs on free open models (GPT-OSS 120B and 20B, Qwen) with fair-use limits. You can add your own API key for Claude, GPT, Gemini, Grok, DeepSeek, Mistral or Cohere, and that provider bills you directly. There are no hidden fees.
Do I need an account?
You can look around without one. A free account, with just an email and a password, lets you save your work and use UlChats and Textem.
What can I make with it?
3D parts you can export as STL or STEP, Arduino and Raspberry Pi Pico projects that run in your browser, analog circuits simulated with SPICE, FPGA bitstreams, and two-layer PCBs with Gerber files in the format JLCPCB and PCBWay take.
Is my data private?
Textem messages are end-to-end encrypted in your browser, UlChats and your API keys are encrypted before they are stored, and analytics run only if you say yes. You can export or delete everything in Settings. See the Privacy Policy.
Does it work on my phone?
Yes, in any modern browser, and you can install it like an app from the browser menu. CAD Studio and Aimplify have the most room on a larger screen.
Who makes Mexger?
Mridul Sharma. Read more on the About page.
Mexger apps
- CAD Studio — Free AI CAD in your browser: describe a part and get parametric solids with exact booleans, ISO holes, involute gears and assemblies. Measure, section, explode, sketch in the air with your hands, and export watertight STL and STEP.
- Aimplify — Describe a gadget and AI designs the circuit and code, checked by wiring rules and the real Arduino compiler. Simulate Arduino and Raspberry Pi Pico, analog circuits with ngspice, Verilog on FPGAs, then turn it into a routed PCB with Gerbers for JLCPCB or PCBWay. Free.
- UlChats — Import a WhatsApp chat and talk with an AI that has learned their voice from your whole history together — with memory you can see and edit, and care built in. Encrypted before it is stored.
- Textem — Share a 4-digit code that works once; they enter it, you accept. End-to-end encrypted chats, photos, voice notes, view-once media, and voice and video calls — messages that disappear when you want them to.
- PromptArm — Write a raw prompt, pick a mode and a model, and PromptArm rewrites it into a form that gets the most out of the AI you are calling. Free with open models.
- Discover — AI apps, models and skills in the store.
Mexger is made by Mridul Sharma. Free, running on open models.