OneBox

What is OneBox?

OneBox is a free, ad-free utility app with an AI agent built in. The agent takes plain-language requests such as summarising a PDF, compressing photos into one PDF or recording receipts in the bookkeeping tool, then picks and chains the right on-device tools and reports back. The app bundles more than 90 tools, including a PDF toolkit, document scanner, image-to-text, image compressor and converter, ID photo maker, watermarking, QR and barcode, file transfer, a bookkeeping module and an AI chat arena where two models debate each other. It works with your own API key: paste any OpenAI-compatible endpoint, such as DeepSeek, Kimi, Qwen, Gemini or OpenRouter, and requests go straight from your device to that provider. Token use is tracked per conversation. OneBox is open source under Apache-2.0, ships in twelve languages and costs nothing from the developer, with optional platform credits for built-in models.

Use cases

• Ask an AI agent to run PDF and image tools
• Merge, split and compress PDFs on your phone
• Scan documents and extract text from images
• Log expenses from receipt photos
• Make ID photos at home
• Chat with any OpenAI-compatible model
• Have two AI models debate a topic

Who it's for

• Android users
• Students
• Everyday phone users
• Developers with their own API keys

Why use OneBox

• Does the work through real tools rather than describing steps, so a request like compress and merge is carried out.
• Your API key stays on the device and requests go straight to the provider, with no OneBox server in the path.
• No ads, no subscription and open-source code under Apache-2.0 make the app inspectable and cheap to run.
• Token tracking per conversation keeps long agent runs from costing more than expected.
• Many everyday utilities in one app reduce the number of single-purpose apps on your phone.

OneBox features

• Built-in AI agent that chains on-device tools
• PDF toolkit for merging, splitting and compressing
• Document scanner and image-to-text
• Image compression, conversion and long-image stitching
• ID photo maker and image editor
• Photo metadata stripping and watermarking
• QR and barcode tools, collage and poster maker
• Bookkeeping with AI receipt entry
• AI chat arena for two-model conversations
• Bring-your-own-key engines for any OpenAI-compatible endpoint
• Per-conversation token tracking
• Picture-in-picture progress for long tasks

OneBox integrations

• DeepSeek
• Kimi
• Qwen
• Hunyuan
• ERNIE
• MiMo
• Doubao
• Gemini
• OpenRouter
• OpenAI-compatible APIs

How to get started with OneBox

1. Install OneBox from an app store or the website.
2. In settings, add an engine by pasting an OpenAI-compatible endpoint, model name and API key, or use the built-in platform models.
3. Open the AI chat and describe what you want, for example summarising a PDF or compressing photos into one PDF.
4. The agent selects and chains the on-device tools, shows progress in picture-in-picture, and returns the result.
5. Check token use per conversation, and pin or lock tools such as bookkeeping on the home screen.

OneBox limitations

• Built-in platform models use credits; bring your own key for unlimited free use
• Agent tool calls have a per-tool timeout and an iteration cap
• Some feature guides on the site are written in Chinese

OneBox pricing

OneBox is free to use.

Prices can change and may vary by country or exclude tax. Check the official pricing page.

OneBox alternatives

The main OneBox alternatives listed on Debuly are ChatGPT, BrainSoup, OpenClacky, OpenBot, PKSHA Technology and Sauna. The table compares pricing and platforms; order is A–Z.

1. 

   BrainSoup

   Native Windows app for building teams of custom AI agents that you direct in plain language, with local or cloud models and your own documents.

   Automation and agentsChat assistantsProductivity
   PaidVisit BrainSoup (official site)
2. 

   ChatGPT

   OpenAI's AI assistant for chat, writing, analysis, images, voice, deep research and coding across web, iOS and Android.

   Chat assistantsResearch and searchCodingWriting
   FreemiumVisit ChatGPT (official site)
3. OB

   OpenBot

   CopilotKit's open-source template for a self-hosted employee agent workspace, where each AI coworker has its own channel, browser, files and approved tools.

   Automation and agentsChat assistantsDeveloper platforms
   Open sourceVisit OpenBot (official site)
4. 

   OpenClacky

   MIT-licensed AI agent platform with a web UI, CLI, memory, evolving Skills and browser automation that runs on your own model key.

   Automation and agentsCodingProductivity
   Open sourceVisit OpenClacky (official site)
5. 

   PKSHA Technology

   Japanese enterprise AI software for customer support and internal work: chat agents, FAQ, voice bots, speech assistance and knowledge generation.

   Automation and agentsAudio and voiceProductivity
   Contact salesVisit PKSHA Technology (official site)
6. 

   Sauna

   AI teammate with persistent memory that connects to 3,000+ tools and works through the web, iOS, iMessage, Slack and email.

   Automation and agentsProductivityChat assistants
   FreemiumVisit Sauna (official site)

OneBox FAQ

Sources & verification

Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.

Image credits

• Logo: from oneboxable.com · fetched 23 Oct 2026 · Vendor trademark, used only to identify the product; removed on request
• Cover: none collected yet, so a generated tile is shown.

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