# W/Y expert — experimenting with LLM APIs

> experimenting with LLM APIs (iPhone/iPad app by Gionata Brunel.)

- Source: https://appshunter.io/ios/app/wy-expert/id6446455557 (this page in markdown: same URL + `.md`)
- Developer: [Gionata Brunel](https://appshunter.io/developer/1627817730)
- Category: Developer Tools, Utilities
- Price: $0.99 (on sale, was $1.99)
- Age rating: 17+
- Requires: iOS 15.1 · 28 MB
- Languages: American English
- Released: 2023-04-02
- Data updated: 2026-03-15
- User reviews in markdown: https://appshunter.io/ios/app/wy-expert/id6446455557/reviews.md

## What is W/Y expert?

Direct API Access, Total Control:
W/Y expert gives you complete control over LLM interactions by letting you configure API calls directly through JSON. Perfect for developers, AI engineers, and enthusiasts who want to experiment with every parameter.

Key Features:
Universal LLM support - works with OpenAI, Anthropic, and any current or future provider
Direct JSON configuration for API requests
Full access to all parameters: temperature, top_p, tokens, penalties, system prompts, and more

Privacy First:
Your personal data is NOT collected. You only need your own API key from your chosen AI provider.
Configure everything from system roles to sampling parameters.


## Version history (last 5 releases)

### 2.0.4 — 2025-11-13

Universal JSON-based architecture: now compatible with ALL current and future LLM providers through direct API configuration.

### 2.0.3 — 2024-10-30

Compatible with more than one AI services provider - for instance, OpenAI and Perplexity

### 2.0.2 — 2024-01-30

Vision: pick one or many pictures from your library and query the model  gpt-4-vision-preview.

### 2.0.1 — 2024-01-23

Vision: pick one or many pictures from your library and query the model  gpt-4-vision-preview.

### 2.0.0 — 2024-01-20

Vision (simple implementation): pick a picture from your library and query the model

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## More apps by Gionata Brunel

- [W/Y WITH/YOU](https://appshunter.io/ios/app/wy-withyou/id6446297049)
- [la_pista](https://appshunter.io/ios/app/la-pista/id6471365914)
- [w_b_temp](https://appshunter.io/ios/app/w-b-temp/id6624304204)

All apps by Gionata Brunel: https://appshunter.io/developer/1627817730

## Related topics

[gionata brunel](https://appshunter.io/ios/topics/gionata-brunel)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-03-15.*