# AI Mistress vs Ever Collar

The clearest difference is in-app purchases: AI Mistress at none against Ever Collar's 8. Ever Collar's advantage is ads (none vs shown) and update cadence (every 4 days vs every 11 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Ever Collar sells 4 in-app purchases, starting at $8.99 per month. AI Mistress asks for nothing beyond the download.

AI Mistress ships an update every 11 days, Ever Collar every 4 days. The most recent releases landed on October 27, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | AI Mistress | Ever Collar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 11 days | **Every 4 days** |
| Size | 36 MB | 145 MB |
| Requires iOS | 16.7.10 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Iconiplex](https://appshunter.io/developer/1876239862) |

## What reviewers say

### AI Mistress

[App page](https://appshunter.io/ios/app/ai-mistress/id6502618896)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ever Collar

[App page](https://appshunter.io/ios/app/ever-collar-bdsm-tracker/id6758998391)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Monthly) | $8.99 | per month |
| Premiere (Monthly) | $15.99 | per month |
| Pro (Yearly) | $64.99 | per year |
| Premiere (Yearly) | $114.99 | per year |


## Frequently asked questions

### Is AI Mistress free?

AI Mistress is free to download, with no in-app purchases.

### Is Ever Collar free?

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

### Do AI Mistress or Ever Collar have ads?

AI Mistress shows ads; Ever Collar does not.

### Which is updated more often, AI Mistress or Ever Collar?

AI Mistress ships an update every 11 days, and Ever Collar every 4 days. Most recently, AI Mistress was updated on October 27, 2026 and Ever Collar 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.*