Comparison

Banana API vs OpenResponses

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

OpenResponses

This native client provides advanced control and observability for AI models. It allows users to stream responses in real-time, inspect requests, and utilize various OpenAI models with a fast interface. Features include web search, code interpretation, and image generation.

Highlights
  • Real-time response streaming
  • Request inspector for API details
  • Prompt library and advanced model controls
  • Web search and code interpreter tools
  • Image generation capabilities
  • Direct Notion and Apple system tool integration
Features
Read full description

OpenResponses is a native iPhone and iPad playground for the OpenAI Responses API. Bring your own API key, control your requests, inspect tool activity and explore current models in SwiftUI. CHAT WITH CONTROL • Choose from a shared catalog including GPT-6 Astra and GPT-5.6 Sol, Terra and Luna, alongside earlier supported models. • Adjust compatible reasoning, context, verbosity, image and tool settings. • Stream replies, inspect API-provided reasoning summaries, follow token usage and review request/response details. • Save prompt presets, attach photos and documents, export conversations and keep local history. API WORKBENCH • Edit JSON requests using HTTP, streaming or WebSocket transports, with secure draft recovery and local schema validation. • Inspect raw events and export complete final response payloads. • Count input tokens, compact context, retrieve or cancel background responses and inspect known conversations. • Explore templates for hosted shell, tool search, custom tools, async/programmatic calling, multi-agent responses and images. Supply real client tool results when a request needs them. VOICE, IMAGES AND TOOLS • Have continuing Realtime voice conversations with microphone mute and interruption handling. • Generate images with GPT Image 2 and supported partial previews. • Use hosted web search with sources, Code Interpreter and file search when enabled. • Navigate and interact with an on-device WebKit browser using page tools or Computer Use. Cancellation, deadlines and action limits help keep runs controlled; some sites and authentication flows require manual interaction. • Connect supported apps through provider sign-in, select several accounts per chat and inspect MCP tools. Search 44 catalog entries or the public registry; provider setup requirements are labeled. • Enable Calendar, Reminders, Contacts or Notion tools for the tasks that need them. FILES AND DEVELOPER LABS • Manage files and vector stores with clear indexing status. • Monitor Batch jobs and save full available output/error files. • Import reviewed text-chat JSONL datasets for fine-tuning where your account remains eligible. Exported chats are drafts for dataset preparation. • Import retained Assistant JSON into Responses presets. Retired live Assistants operations are disabled. YOUR KEY, VISIBLE DATA FLOW • Explore Demo Mode without sending live API requests. • Store API credentials in the iOS Keychain and review the first-live-send data-sharing notice. • Connect supported apps through provider sign-in, select several accounts per chat and inspect MCP tools. Search 44 catalog entries or the public registry; provider setup requirements are labeled. • No separate OpenResponses account is required. OpenAI usage is billed to your own API account. Requires iOS 17 or later. Live features need an OpenAI API key with appropriate billing and model/tool access; third-party tools may need their own accounts and permissions. Feature availability and service limits vary. AI output can be inaccurate; verify important information before acting.

Screenshots

Banana API4 screens
OpenResponses4 screens

Verdict

The call

The clearest difference is price: OpenResponses at Free against Banana API's $2.99. OpenResponses also leads on iOS requirement (17.0 vs 26.0). On update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

OpenResponses is free to download; Banana API costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Banana API ships an update every 2 months, OpenResponses every 3 months. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.

Scorecard3 real differences · 7 level
Banana API versus OpenResponses: the parameters behind the verdict, then further details
ParameterBanana APIOpenResponses
Price$2.99Free — better
Rating—5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings—1 — better
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.017.0 — better
Further details — not scored
Size4 MB8 MB
Age rating17+4+
DeveloperClaudio GonzalezGunnar Hostetler

Customer experience

Banana API

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

OpenResponses

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Banana API

No in-app purchases

None

OpenResponses

No in-app purchases

Questions

Is Banana API free?
Banana API costs $2.99, with no in-app purchases.
Is OpenResponses free?
OpenResponses is free to download, with no in-app purchases.
Do Banana API or OpenResponses have ads?
Neither Banana API nor OpenResponses shows ads.
Which is updated more often, Banana API or OpenResponses?
Banana API ships an update every 2 months, and OpenResponses every 3 months. Most recently, Banana API was updated on September 21, 2026 and OpenResponses on September 17, 2026.

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