# OpenAssistant vs Banana API

The clearest difference is price: OpenAssistant at Free against Banana API's $2.99. OpenAssistant also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (16.0 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

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

OpenAssistant ships an update every 3 weeks, Banana API every 2 months. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | OpenAssistant | Banana API |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/openassistant/id6692613772/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | **Free** | Paid |
| Size | 5 MB | 4 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [Gunnar Hostetler](https://appshunter.io/developer/1768599987) | [Claudio Gonzalez](https://appshunter.io/developer/1842064479) |

## What reviewers say

### OpenAssistant

[App page](https://appshunter.io/ios/app/openassistant/id6692613772)

This app allows users to create and manage custom AI assistants for quick answers about files. It integrates with vector stores for efficient semantic search and supports natural conversations with uploaded documents.

**Highlights:** Create and customize AI assistants, Manage multiple assistants, Integrate with vector stores, Upload and search multiple file types, Natural language conversations with documents, Choose ChatGPT models

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Banana API

[App page](https://appshunter.io/ios/app/banana-api-curl-testing-tool/id6752992501)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OpenAssistant free?

OpenAssistant is free to download, with no in-app purchases.

### Is Banana API free?

Banana API costs $2.99, with no in-app purchases.

### Do OpenAssistant or Banana API have ads?

Neither OpenAssistant nor Banana API shows ads.

### Which is updated more often, OpenAssistant or Banana API?

OpenAssistant ships an update every 3 weeks, and Banana API every 2 months. Most recently, OpenAssistant was updated on September 23, 2026 and Banana API on September 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*