# Windmill Propane vs AI Contacts Manager

The clearest difference is in-app purchases: Windmill Propane at none against AI Contacts Manager's 1. Windmill Propane also leads on iOS requirement (12.2 vs 18.4). AI Contacts Manager's advantage is update cadence (every 2 months vs every 23 months). On price, ads and device support there is nothing between them.

Both are free to download. AI Contacts Manager sells 1 one-off in-app purchase. Windmill Propane asks for nothing beyond the download.

Windmill Propane ships an update every 23 months, AI Contacts Manager every 2 months. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Windmill Propane | AI Contacts Manager |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 2 months** |
| Size | 46 MB | 7 MB |
| Requires iOS | **12.2** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [EDPO, LLC](https://appshunter.io/developer/1521548149) | [Ahmed Mohamed Ali Ibrahim Almansoori](https://appshunter.io/developer/926084497) |

## What reviewers say

### Windmill Propane

[App page](https://appshunter.io/ios/app/windmill-propane/id1583996012)

**Features:** macOS Compatibility

**In-app purchases:** none


### AI Contacts Manager

[App page](https://appshunter.io/ios/app/ai-contacts-manager/id6755623580)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Contacts Manager | $4.99 | one-time |


## Frequently asked questions

### Is Windmill Propane free?

Windmill Propane is free to download, with no in-app purchases.

### Is AI Contacts Manager free?

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

### Do Windmill Propane or AI Contacts Manager have ads?

Neither Windmill Propane nor AI Contacts Manager shows ads.

### Which is updated more often, Windmill Propane or AI Contacts Manager?

Windmill Propane ships an update every 23 months, and AI Contacts Manager every 2 months. Most recently, Windmill Propane was updated on November 3, 2026 and AI Contacts Manager on October 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.*