ByoKey– AI Chat & API Hub

ByoKey– AI Chat & API Hub

Your keys, full control

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Free

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Released
September 19, 2026
Updated
October 29, 2026

Features

ByoKey– AI Chat & API Hub screenshot #1 for iPhone
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About

ByoKey is an AI chat for your own API key – with projects, sub-agents that check answers, and the cost of your answers in view. You pay the AI provider directly, and only for what you use. ByoKey adds no subscription and no markup. SEE WHAT YOU SPEND • Tokens and cost under each answer, wherever a price is known • Totals per chat, per project and per month, plus a monthly budget you set yourself • Compare before you choose: price per million tokens and context length, where the provider lists them • Your own prices for models without a listed price – otherwise ByoKey shows "Price unknown" rather than a wrong figure Amounts that rest on an estimate are marked "approx.". KEEP WORKING ON YOUR CODE • Attach a project as a ZIP archive or folder – in a sheet with the file tree you pick what goes along and see tokens and cost beforehand • Dependencies, build folders and binary files stay out; files that may contain credentials are never preselected • Export the result: the newest version of each file, as a ZIP or as a folder in the Files app SEVERAL CHATS AT ONCE • Up to four answers run in parallel; dots in the chat list show what is running, what is done and what needs you • Leave the app and an answer keeps writing for as long as the system allows – otherwise "Continue writing" picks it up later • Optional notification when an answer is ready – without its content PROJECTS AND SUB-AGENTS • Projects with their own instructions and default model – six templates help you get started • Up to three sub-agents – further models, also from other providers – review the main model's answers, for example as reviewer, critic or tester; if you like, the main model then revises its answer • Move chats into projects or merge them; costs still count exactly once YOUR KEY, YOUR CHOICE • 15 AI providers, including providers that process data in the EU – or a server of your own, also on your local network • Compatible with API keys from OpenRouter, OpenAI, Anthropic, Google Gemini, Mistral AI and more • Connect with OpenRouter: sign in instead of copying a key – or start with free models (with daily limits, and only if your OpenRouter account allows providers that may use inputs for training or publish them) • Your keys are stored only on this device and are sent only to the provider they belong to • Nothing goes to a provider before you agree – separately for each provider, including those of your sub-agents BUILT FOR REAL WORK • Attach PDFs, images, text and source files • On iPad: chat list and chat side by side, keyboard shortcuts and drag and drop for attachments • Models by category – with OpenRouter also music & audio, voice and areas such as programming • Create images (with selected providers), and with OpenRouter's audio models also music and spoken answers • Tables and code blocks in answers; HTML preview on your device • Dictation: recognized on your device (on Apple's servers only if you allow it), never via your AI provider • Voice mode: talk and have answers read aloud – on your device with any model, via the provider only with that provider's speech models; only some providers offer them • Add to your request while an answer is still arriving SAFE BY DESIGN • An on-device content filter checks requests, answers and attached documents • Report content and block models right in the chat • No account with us, no tracking, no ads • For iPhone and iPad, in English, German and Polish Free – no in-app purchases, no subscription. Note: ByoKey requires your own API key from a third-party AI provider (for example OpenRouter) or a server of your own. The provider bills you directly for using its models. ByoKey sells no credit, receives no commission and runs no server that your chat requests pass through.
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What's New in ByoKey

2.0

October 29, 2026

New in 2.0 • ByoKey on iPad: a layout made for the large screen, with the chat list as a sidebar next to the chat. ByoKey works in portrait and landscape, in split screen and in a resizable window. With a keyboard attached, Return sends and Shift-Return starts a new line, and the main commands have shortcuts, such as ⌘N (new chat) and ⌘F (search chats). Drag files and images onto the chat – they go through the same checks as with the paperclip. • Sub-agents: up to three further models – also from other providers – review the main model's answers one after another, each in its own role: reviewer, critic, tester, second opinion or your own. If you like, the main model then revises its answer with their notes. A provider receives nothing until you have agreed to it; tokens and cost (where a price is known) appear under every contribution. • Several chats at once: up to four answers run in parallel, one per chat. Switching chats never cancels anything. Dots in the chat list show what is running, what is done and unread, and which chat needs you – for example after an error or an interrupted answer. • Keeps going in the background: if you leave the app, a running answer keeps writing for as long as the system allows. If the time is not enough, the text so far stays, and “Continue writing” picks it up. • Notifications (optional, off by default): ByoKey lets you know when an answer is ready or needs you while the app is in the background – without the message content. • Bring your project: attach a ZIP archive, a whole folder or single source files. In a sheet with the file tree you decide what goes along and see tokens and estimated cost beforehand. Dependencies, build folders and binary files stay out; files that may contain credentials are marked and never preselected. • Export files: the newest version of each file from your import and from the answers – as a ZIP or as a folder in the Files app, for one chat or for all chats of a project. • Projects rebuilt: first the overview, then the project page with instructions, default model, sub-agents and the project's chats. Six templates help you get started. • Organize chats: select several chats, move them into a project or merge them – costs still count exactly once, and right after merging, “Undo” reverses the merge. “Select chats” and “Merge” are in the “…” menu next to Settings. • Response length: choose it freely in Settings – or “Unlimited”. If an answer is still cut off, “Continue writing” picks it up in the same message. • Dictation: the microphone in the message field writes down what you say – never via your AI provider, and nothing is sent until you tap send. A short tap on the waveform button lets you dictate right in the chat, and your message is sent automatically after a speech pause you set. Press and hold it to open voice mode. • Follow-ups: while an answer is still arriving, you can already send your next message – it goes out as soon as the answer is complete. • Categories in the model list: text and images – with OpenRouter also music & audio, voice and areas such as programming. There, music models create a piece right in the chat, and models that speak themselves answer in voice mode with their own voice. • More information while waiting: if an answer takes longer, ByoKey shows the waiting time and – as far as the provider reports it – whether the request was accepted and the connection is alive. • HTML preview without JavaScript: pages show their layout, styles and images; scripts on the page do not run. • Long chats open much faster, and images are there instantly when you reopen a chat. Plus many fixes, including for accessibility.

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