# Stella vs Contrology & flow

The clearest difference is in-app purchases: Contrology & flow at none against Stella's 2. Contrology & flow also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). Stella's advantage is iOS requirement (16.0 vs 18.2). On price and device support there is nothing between them.

Both are free to download. Stella sells 2 in-app purchases, starting at $4.99 per 7 days. Contrology & flow asks for nothing beyond the download.

Stella ships an update every 2 months, Contrology & flow every 3 weeks. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Stella | Contrology & flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/stella-ai/id6757468766/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 54 MB |
| Requires iOS | **16.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Cheng Zhouting Network Technology Co., Limited](https://appshunter.io/developer/1867155579) | [Felipe Montoya](https://appshunter.io/developer/1317499258) |

## What reviewers say

### Stella

[App page](https://appshunter.io/ios/app/stella-ai/id6757468766)

This AI-powered browser enhances your web experience by analyzing visited pages to help you shop, learn, and discover inspiration. It offers image analysis, contextual shopping recommendations, article summarization, and code generation for web elements.

**Highlights:** AI Vision for image analysis, Contextual shopping recommendations, Article summarization, UI-to-code conversion, Dark-themed interface

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Access | $4.99 | per 7 days |
| Yearly Premium Access | $19.99 | per year |


### Contrology & flow

[App page](https://appshunter.io/ios/app/contrology-and-flow/id6757511690)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stella free?

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

### Is Contrology & flow free?

Contrology & flow is free to download, with no in-app purchases.

### Do Stella or Contrology & flow have ads?

Stella shows ads; Contrology & flow does not.

### Which is updated more often, Stella or Contrology & flow?

Stella ships an update every 2 months, and Contrology & flow every 3 weeks. Most recently, Stella was updated on October 31, 2026 and Contrology & flow on November 5, 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.*