Our work

From an idea to something useful.

Shipped products, public code and interface work by Lev from our team. Each project shows a different part of how we build, and says plainly whether it is available and who it is for.

01Commercial product, Mac app

StillOn

Close your MacBook and keep your AI agents running. StillOn keeps the Mac awake while Claude Code, Codex and other agents work, and can let it sleep when they finish. Shipped, supported and chosen through paid licences.

Where it runs: Apple silicon and Intel MacBooks. Free for 7 days, then a one-time licence of $14.99.
With Claude: Keeps Claude Code running while the lid is closed, alongside Codex and other agents.
Measured: A published power study compares five approaches on one M4 MacBook Pro, with the raw data available: 1.76 W for StillOn against 2.90 W to 6.40 W for the others.

Visit StillOn Read the power study

The lid closes and the agent session keeps answering on the phone.

StillOn’s Automation settings inside a Mac laptop frame, with an active agent session and connected agent apps.

02Public source, Mac and iPhone

AgentMicro

Turn your iPhone into a control surface for coding agents, over a private Bluetooth connection.

What we built: A Mac menu-bar companion, an iPhone app and a VS Code extension, using Swift and JavaScript.
The connection: An encrypted private Bluetooth service turns the phone into controls for supported coding-agent workflows.
Public code: Read, build and adapt the source under the Business Source License 1.1, with a scheduled MIT conversion in 2030.
Getting started: The iPhone app is installed from source using your own Xcode signing. Setup instructions are in the repository.

View the source Read the licence

AgentMicro’s iPhone control surface beside a Codex workspace on the Mac desktop.

03Client work for Pronto Charge

ProntoMenu

Menus, ordering, payments and venue administration, brought together in one hospitality platform.

The scope: Guest-facing menus, ordering and checkout, with venue administration and reporting. Built for PRONTO CHARGE SRL.
Languages: Up to 249 translations of one menu, detected on a guest’s first visit and kept in sync with the original.
Availability: Currently in maintenance. The public website introduces the platform.

Visit the project website

ProntoMenu’s venue analytics dashboard inside a Mac laptop frame. — Interface preview

A ProntoMenu guest menu translating itself.

A live ProntoMenu menu for a seaside venue.

04In development, iPhone app

PairPal

A study-partner app designed around your subjects and the times you can actually study together.

The idea: Find a study partner taking the same subjects, with compatible study times.
What we built: An iPhone interface and companion website, with subject-based discovery and matching flows.
Availability: In development. The website has the waitlist.

Explore PairPal

Choosing subjects by name or code in PairPal.

A weekly study-hours leaderboard in PairPal.

Interface previews with sample profiles.

05Live, browser extension

Cookd

Practise the official SAT Question Bank on a test-day screen, and learn from the questions that cost you points.

Where it runs: Chrome, Brave, Edge and Firefox on a computer.
With Claude: Connect Cookd and Claude can read your practice history and notes, then build a set for the time you have.
Clear limits: The connector sends question IDs, skills, your answers and timing. It never sends College Board’s question text, answer choices, keys or explanations.

Visit Cookd Connect it to Claude

Cookd showing a Question Bank question in the test-day layout, with a review panel.

06Works with Claude

How our Claude connectors work.

1Add the connector in Claude
2Approve access
3Ask in plain language

Orzio and Cookd are MCP servers that Claude connects to as custom connectors. You add one in Claude, approve access, then ask about your own data in plain language. Orzio asks you to approve access in Telegram; Cookd uses a standard sign-in. Both can also be added to Claude Code.

Both are built around what the AI should not do. Orzio keeps reading and writing apart: analysis comes with the connection, while logging meals or changing goals needs its own approval. Cookd never sends College Board’s question text, answer choices, answer keys or explanations to the AI. Claude sees question IDs, skills, your answers, timing and notes, and links you to a question instead of reading it.

Connect Orzio Connect Cookd

07More from the studio

Smaller apps, made with the same care.

Orzio

Meal photos in Telegram, calorie and macro estimates, and daily totals. Connect it to Claude to analyse your own data.

Free in early access. Estimates can be wrong and are not medical or nutritional advice.

Orzio in Telegram, estimating the macros of a photographed meal.

Visit Orzio

Kelvin

Battery care for your Mac: a charge limit, Heat Protection and power use app by app.

Free preview. Apple silicon MacBooks on macOS 26 or later.

Kelvin’s menu bar popover with the charge limit, power flow and apps using power.

Visit Kelvin

Revlo

Cambridge AS Economics multiple-choice past-paper practice, with instant feedback and accuracy by topic.

Free.

A Revlo past-paper question with its answer choices.

Visit Revlo

StillOn, AgentMicro, PairPal, Cookd, Orzio, Kelvin and Revlo are independent projects by Lev from our team, under their own terms, privacy policies and licences. ProntoMenu is client work for PRONTO CHARGE SRL. These projects are operated independently of COHENTRA LTD. Product names such as Claude, ChatGPT, SAT, Telegram and MacBook belong to their owners; no affiliation or endorsement is implied.

Every good app starts somewhere.

What is on your mind? An idea, a question, or just a hello. We would love to hear it.

info@cohentra.ai