# QuestAI vs ContextStacker

The clearest difference is ads: ContextStacker at none against QuestAI's shown. ContextStacker also leads on update cadence (every 3 days vs every 9 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. QuestAI sells 2 in-app purchases, starting at $7.99 per 7 days and ContextStacker sells 2 in-app purchases, starting at $99.00 per year. Whichever you choose, the download price is not the number that matters.

QuestAI ships an update every 9 months, ContextStacker every 3 days. The most recent releases landed on September 24, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | QuestAI | ContextStacker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (7 ratings)](https://appshunter.io/ios/app/questai-ai-search-engine/id6742218694/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 7 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Xi'an Whaleway Software Technology Co., Ltd.](https://appshunter.io/developer/1776535561) | [鹏源 邱](https://appshunter.io/developer/1042192961) |

## What reviewers say

### QuestAI

[App page](https://appshunter.io/ios/app/questai-ai-search-engine/id6742218694)

This app provides AI-driven search results, offering in-depth and accurate answers to complex questions. Users can compare different AI models, save their search history, and access the latest information instantly.

**Highlights:** AI-driven search, In-depth answers, Compare AI models, Fast and updated information, Save and continue searches

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Week | $7.99 | per 7 days |
| One Year | $39.99 | per year |


### ContextStacker

[App page](https://appshunter.io/ios/app/contextstacker/id6774051551)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Annual | $99.00 | per year |
| Business Annual | $199.00 | per year |


## Frequently asked questions

### Is QuestAI free?

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

### Is ContextStacker free?

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

### Do QuestAI or ContextStacker have ads?

QuestAI shows ads; ContextStacker does not.

### Which is updated more often, QuestAI or ContextStacker?

QuestAI ships an update every 9 months, and ContextStacker every 3 days. Most recently, QuestAI was updated on September 24, 2026 and ContextStacker on September 28, 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.*