OpenCone vs Banana API
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpenCone
This app transforms your iPhone or iPad into a powerful RAG system. It allows you to import various document types for on-device extraction, embedding, and semantic search. Connect to your OpenAI and Pinecone accounts to build a private knowledge base for real-time, citation-backed answers.
- Multi-format document import (PDF, DOCX, TXT, code, etc.)
- On-device OCR for image text recognition
- Semantic search with streaming answers
- Real-time citations and metadata filtering
- Support for GPT-5 and other advanced models
- Secure credential management in Keychain
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OpenCone turns the documents on your iPhone into answers you can check. Bring your own OpenAI and Pinecone keys: OpenCone reads and splits your files on the phone, stores them in your own Pinecone index, and answers your questions with OpenAI, citing the passage behind each claim. ASK • Answers stream in as they're written, with headings, lists, tables and code. • Claims carry tags such as [S1]. Tap one to read the exact passage, with its file, page and score. • Follow-up questions see your earlier exchanges. • Ask by voice, with Apple's speech recognition. SEARCH ONE INDEX OR ALL OF THEM • Auto reads each question and searches the indexes and namespaces likely to hold the answer, up to five at once. Ask it to compare two and it searches both. • Everything searches every namespace of every index you include. • One index searches the index you pick, in one namespace or in each of them. • Questions are embedded with the model that built each index, so the indexes you already have work as they are. • Optional reranking with Pinecone's hosted rerankers. YOUR DOCUMENTS • Import PDFs, plain text, Markdown, RTF, HTML, JSON, XML, CSV, code and images. Text in images is recognized on the phone. • Choose the index and namespace for each upload, follow its progress, and see how long each step took: read, split, embed and store. • Create and delete indexes and namespaces, with the cloud, region and metric you choose. ANSWER SETTINGS THAT FOLLOW THE MODEL • Choose from the current GPT models, or enter any model ID your key can use. • Reasoning effort, answer length up to the model's maximum, detail, service tier, web search and code interpreter, each offered where the model supports it. • Add your own instructions to every answer. SEE EVERY API CALL • Settings lists every OpenAI and Pinecone endpoint OpenCone calls: what it's for, the settings that shape it, and how this session's requests went. PRIVATE BY DESIGN • Your keys stay in the iPhone's Keychain. • No account, no analytics, no ads, and no server in between: requests go straight from your iPhone to OpenAI and Pinecone. • Answers are requested with storage off, so OpenAI keeps no conversation between questions. • One reset removes your keys, your settings and what OpenCone learned about your indexes. OpenCone works with your own OpenAI API key and your own Pinecone API key and project. OpenAI and Pinecone bill their usage to your accounts.
Banana API
This tool simplifies testing AI image generation APIs like Google's Imagen and Nano Banana. It allows users to experiment with prompts and parameters, generate images, and review API calls and responses. The app requires users to provide their own API key and is designed for developers, marketers, and hobbyists.
- Test Google Imagen and Nano Banana APIs
- Generate unlimited images with own API key
- Experiment with prompts and parameters
- Review cURL requests and responses
- Save and share generated AI images
- Easy-to-use interface
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A simple yet powerful client for testing Google’s Imagen and Nano Banana APIs. Whether you’re a beginner developer, marketer, or vibe-coder, Banana API makes experimenting with image generation easy and fun. Write a prompt, select aspect ratio and parameters, while Banana API writes the code for you. Submit the API call and review the responses, keep a log of all your API calls and images generated. With Banana API you can: - Enter your own Google Cloud API key to generate unlimited images. - Preview and send API calls instantly with a clean, easy-to-use interface. - Experiment with prompts, aspect ratios, sizes, and generation settings. - View and review your full cURL requests and responses for learning and debugging. - Save or share your generated AI images directly from the app. IMPORTANT INFORMATION This is a client app only. Banana API does not include an API key or access credits. You must provide your own valid Google Cloud API key. Charges may apply. Usage of Google Imagen and Nano Banana through this app will incur costs billed directly by Google Cloud, based on your account and API usage. Stable connection required. A strong and reliable Wi-Fi or mobile data connection is necessary for best performance. No subscription, no hidden fees. Pay once and keep using the app as long as you have your own API key. WHO IS IT FOR? Banana API is designed for: -Developers who want to test APIs quickly from their iPhone. -Marketers and creatives exploring AI-generated images for campaigns. -Students, hobbyists, and low-code makers who want to learn by experimenting. Banana API makes testing AI image APIs approachable, portable, and fun. All while keeping you in control.
Screenshots
Verdict
The clearest difference is price: OpenCone at Free against Banana API's $2.99. OpenCone also leads on iOS requirement (17.6 vs 26.0). Banana API's advantage is update cadence (every 2 months vs every 4 months). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
OpenCone is free to download; Banana API costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
OpenCone ships an update every 4 months, Banana API every 2 months. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.
| Parameter | OpenCone | Banana API |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 4 MB | 4 MB |
| Age rating | 4+ | 17+ |
| Developer | Gunnar Hostetler | Claudio Gonzalez |
Customer experience
OpenCone
Banana API
In-app purchases
OpenCone
No in-app purchases
Banana API
No in-app purchases









