# WhatGDT vs Hemline Studio

The clearest difference is in-app purchases: Hemline Studio at none against WhatGDT's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. WhatGDT sells 4 in-app purchases, starting at $9.99 per month. Hemline Studio asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | WhatGDT | Hemline Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (21 ratings)](https://appshunter.io/ios/app/whatgdt-ai-chat-assistant/id6459108520/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 92.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 27 MB | 15 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Vista Mobile](https://appshunter.io/developer/1688449685) | [Adetunji Adeyinka](https://appshunter.io/developer/1856161948) |

## What reviewers say

### WhatGDT

[App page](https://appshunter.io/ios/app/whatgdt-ai-chat-assistant/id6459108520)

Enhance your messaging experience on WhatsApp and Telegram with an AI chatbot powered by GPT-4o. Get smart, fast replies, enjoy voice and art AI features, and communicate in multiple languages effortlessly.

**Highlights:** AI chatbot for WhatsApp and Telegram, Powered by GPT-4o technology, Smart and fast replies, Art AI and Voice AI features, Multi-language support, Seamless integration with messaging apps

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly ChatGPT for WhatsApp | $9.99 | per month |
| WhatGdt Yearly Premium | $24.99 | per year |
| WhatGdt Yearly Pro Premium | $39.99 | per year |
| Lifetime ChatGpt for Whatsapp | $49.99 | one-time |


### Hemline Studio

[App page](https://appshunter.io/ios/app/hemline-studio/id6756938885)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WhatGDT free?

WhatGDT is free to download, with in-app purchases available.

### Is Hemline Studio free?

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

### Do WhatGDT or Hemline Studio have ads?

Neither WhatGDT nor Hemline Studio shows ads.

### Which is updated more often, WhatGDT or Hemline Studio?

WhatGDT ships an update every 2 months, and Hemline Studio every 2 months. Most recently, WhatGDT was updated on October 27, 2026 and Hemline Studio on October 24, 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.*