# ai chat by api vs Prompt Stock

The clearest difference is price: Prompt Stock at Free against ai chat by api's $1.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Prompt Stock is free to download; ai chat by api costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | ai chat by api | Prompt Stock |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ai-chat-by-api/id6739469873/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 days |
| Monetization | Paid | — |
| Size | 3 MB | 1 MB |
| Requires iOS | 18.1 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [INGOAMPT](https://appshunter.io/developer/1704539480) | [Yasuyuki Arata](https://appshunter.io/developer/1896504912) |

## What reviewers say

### ai chat by api

[App page](https://appshunter.io/ios/app/ai-chat-by-api/id6739469873)

Access ChatGPT Plus features without a monthly subscription by using your own OpenAI API key. Pay only for API usage directly with OpenAI for a flexible and cost-effective experience. Extract text from files to easily create prompts.

**Highlights:** Use your own OpenAI API key, Pay-as-you-go API usage, Extract text from PDF and TXT files, Seamless ChatGPT interface, Copy and reuse text easily

**Features:** macOS Compatibility

**In-app purchases:** none


### Prompt Stock

[App page](https://appshunter.io/ios/app/prompt-stock/id6775540584)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ai chat by api free?

ai chat by api costs $1.99, with no in-app purchases.

### Is Prompt Stock free?

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

### Do ai chat by api or Prompt Stock have ads?

Neither ai chat by api nor Prompt Stock shows ads.

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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.*