Local AI for Windows + Linux

Lemonade. Same AI power. No datacenter needed.

A desktop assistant that reads your files, looks at your screen when you ask, and writes real documents — running entirely on the computer already on your desk.

Windows 11 + Linux· $49 once· 14-day free trial· By AIon X LLC
The Lemonade window on a dark background: a sidebar of conversations, a prompt box reading "Ask, paste an image, or drop a file", and suggested actions including "Summarise every PDF added to ~/Downloads today". The title bar shows the resident model, gemma4:e4b, and the words "100% local".
The main window. The title bar names the model actually loaded on this machine.
The difference

A rented seat, or your own stand.

Every mainstream AI product is a seat in someone else's datacenter. Your files go up, an answer comes back, and a subscription renews every month. Lemonade runs the other way round.

Cloud AI vs. Lemonade
Cloud AI Lemonade
Where it runs Someone else's servers Your computer
Your files Uploaded Never leave the machine
Cost Monthly, forever $49, once
Works offline No Yes
Rate limits Yes Your GPU is the limit
What it does

The whole stand fits on your desk.

Eleven things it actually does. No model API key or cloud inference upload.

01

Answers from your own files.

Point it at a folder and it builds a private index. Ask "what changed in the contract since Friday" and it reads your actual documents. Indexing is incremental — a file is only re-read when it changes.

An answer about Q2 retention. Above it an agent trace lists two steps — a llamaindex retrieval over 6 chunks and an fs.read of q2-retention.xlsx — and below it two source chips cite q2-retention.xlsx rows 2–5 and slide 3 of a deck. A sources rail on the right shows relevance scores of 0.91 and 0.87.
Every claim carries the file, sheet and rows it came from.
02

Sees your screen.

Drag a region, capture a window, or paste an image, and ask about it. The capture stays on the machine like everything else.

The region capture overlay dimming the screen, with a selection rectangle drawn around a table of retention figures and a readout showing 903 × 156 · 1.0× DPI.
Drag a region; the size and scale are shown as you go.
03

Writes real documents.

Ask for a PDF, Word document, PowerPoint deck or Excel workbook and it produces a genuine one — real formulas in spreadsheets, real slides in decks, openable in Office.

A generated .xlsx open in Lemonade's spreadsheet editor. The formula bar shows =ROUND(C5-B5,1) for the selected cell, the Change column has computed 1.2, 1.3 and 0.5, and there are two sheet tabs at the bottom.
A generated workbook: the formula bar holds a real formula, not a pasted number.
04

Shows every change before it happens.

Before writing a file, it shows you the finished document, a line-by-line diff, and an editor. Approve it, or fix its version and save yours instead.

An approval prompt reading "Replace this file?" with a line-by-line diff showing two removed lines struck through and six added lines marked with a plus. Three buttons offer Write it, Always and Deny.
Nothing is written until you answer. Deny is always live.
05

Edits like the app you'd expect.

Documents open in a real editor: a spreadsheet grid with live formulas, a slide editor with a filmstrip and speaker notes, or a continuous rich-text page. Saving writes the real file back.

The slide editor: a filmstrip of four slides down the left, a two-column slide being edited in the middle, a layout dropdown reading "Two columns", and controls for Duplicate, Notes, Move up, Move down and Delete slide.
Layouts, speaker notes and slide reordering — saved back as .pptx.

Runs on your machine, not a datacenter.

Local models through Ollama, which Lemonade installs and manages itself. No model API key or Lemonade account. Optional mailbox connections sign in directly with Google or Microsoft.

Sets itself up.

It checks your GPU, VRAM and RAM, then downloads models sized to what you actually have. No terminal, no config files.

Picks the right model for the job.

Ask a coding question and it routes to a code model; drop in a screenshot and it switches to a vision model. It manages memory itself, unloading one model to make room for another.

Finds things.

Search your whole home folder by filename or by what is inside the files, without indexing anything first.

Asks before it acts.

Reading files, running commands, capturing the screen and searching the web are each Allow / Ask / Never. Nothing happens silently.

Network tools when you want them.

Web research and mailbox access are permission-gated. They send the approved query or mail request to the relevant service; model inference and the rest of the conversation stay local.

Requirements

It runs on what you already have.

A graphics card is not required. More VRAM buys bigger, smarter models — it is the upgrade path, not the entry fee.

With 32 GB of system RAM, the optional tiered runtime can stretch a 10 GB GPU to capable sparse models that would not fit in VRAM alone. It uses full-model, quantized weights and does not promise small-model speed.

Minimum
OSWindows 11 or Linux (64-bit)
RAM8 GB
GPUNot required — runs on CPU
Disk2.6 GB total
Recommended
OSWindows 11 or Linux (64-bit)
RAM16 GB
GPU8 GB VRAM or more (NVIDIA or AMD)
Disk5 GB total, more for extra models
What the disk space is
Lemonade itself122 MB
Model runtime (once)1.4 GB
Smallest usable model set1.1 GB
A good general set3.6 GB
What your GPU buys you
Your GPU What you can run Total disk
None (CPU)Small chat model + file search2.6 GB
8 GBChat, images and tools in one model5.1 GB
10–12 GBAdd a dedicated vision model11.1 GB
10 GB + 32 GB RAMTiered 35B sparse modelabout 27 GB
24 GBLarge model, vision and code together20.6 GB
Privacy

Your files never leave the counter.

This is the actual reason to buy it, so here it is plainly.

  • Your files are read on your machine and never uploaded.
  • The model runs on your hardware. There is no cloud API behind it.
  • No Lemonade account, behavioural telemetry or analytics. Optional mailbox connections use their provider's sign-in.
  • Lemonade app state lives in one folder you can delete. Shared Ollama models and the operating system trial record live separately.
  • Web research and mailbox access are optional and permission-gated.
  • Activating a licence sends your key and a one-way hash of your machine — nothing else, once.
What does use the network

Runtime and model downloads, update checks, licence activation and occasional rechecks, connected mail, approved web research, and any network access performed by a configured MCP server. Lemonade does not upload your documents or conversations to a cloud inference service; an external tool receives only the approved request and data needed to perform that operation.

Questions

Straight answers, including the awkward one.

Do I need a graphics card?

No. It runs on CPU alone. It is much faster with one, and a bigger card lets you run bigger models — see the table above.

Does it work offline?

Yes, once your models are downloaded. The initial setup needs a connection to fetch the runtime and the models themselves.

Is there a subscription?

No. $49 once, for a perpetual licence. There is a 14-day free trial first — no card required.

How good is it compared to ChatGPT?

A local model on consumer hardware is not as strong as the largest cloud models, and we are not going to pretend otherwise. What it is very good at is working with your files. It is private, it works offline, and it does not charge you monthly.

Does it work with Word and Excel?

Yes. It writes real .docx, .xlsx, .pptx and .pdf files — with working formulas and real slides — and they open in Office.

Which platforms does Lemonade support?

Windows 11 (64-bit) and Linux x86-64, the latter as an AppImage. A macOS build is not published yet.

I lost my licence key

There is no account to sign into, so we send the key again to the address you bought with.

Squeeze your own.

No datacenter. No subscription. No upload. Try it free for 14 days — no card — then buy a licence when you are sure.

Download for Windows Download for Linux 14-day free trial · no card required
Windows 11 installer · Linux x86-64 AppImage · $49 one-time, perpetual licence