# Gamma AI vs Post Ai

The clearest difference is in-app purchases: Post Ai at none against Gamma AI's 4. Gamma AI's advantage is update cadence (every 3 days vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Gamma AI sells 4 in-app purchases, starting at $6.99 per 7 days. Post Ai asks for nothing beyond the download.

Gamma AI ships an update every 3 days, Post Ai every 9 months. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Gamma AI | Post Ai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (1.5K ratings)](https://appshunter.io/ios/app/gamma-ai-writing-prompts/id6446008538/reviews)** | — |
| Number of ratings | **1.5K** | — |
| Positive reviews | 24.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 9 months |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 62 MB |
| Requires iOS | 12.4 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Frunzik Ghazaryan](https://appshunter.io/developer/1675419602) | [Luis Mujica](https://appshunter.io/developer/1718482618) |

## What reviewers say

### Gamma AI

[App page](https://appshunter.io/ios/app/gamma-ai-writing-prompts/id6446008538)

This AI-powered writing assistant generates human-like text in seconds for various purposes, from creative content to professional emails. It supports multiple languages and offers a wide range of use cases, acting as a versatile tool for writers and creators.

**Highlights:** AI text generation, Content creation, Essay and song writing, Caption generation, Email composition, Language translation, Idea generation

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock AI Chat | $6.99 | per 7 days |
| Unlock AI Chat | $7.99 | per 7 days |
| Unlock AI Chat | $29.99 | per month |
| Unlock AI Chat | $49.99 | per year |

**What reviewers like**

- 👍 Game changer
- 👍 Top tier experience

**What reviewers complain about**

- 💰 Unwanted and misleading charges
- 💰 Deceptive pricing
- 🚫 Doesn't work as expected
- 🚫 Reached daily limit on first use
- 🚫 Unable to communicate properly

**Reported bugs**

- Restore button doesn't work
- Incompatible with older devices

**Requested features**

- Restore button functionality
- Ability to cancel subscription


### Post Ai

[App page](https://appshunter.io/ios/app/post-ai-generate-posts/id6473136604)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gamma AI free?

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

### Is Post Ai free?

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

### Do Gamma AI or Post Ai have ads?

Neither Gamma AI nor Post Ai shows ads.

### Which is updated more often, Gamma AI or Post Ai?

Gamma AI ships an update every 3 days, and Post Ai every 9 months. Most recently, Gamma AI was updated on November 7, 2026 and Post Ai on October 30, 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.*