# Protein Habit vs Ferris

Protein Habit and Ferris are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Protein Habit sells 4 in-app purchases, starting at $2.99 per month and Ferris sells 1 in-app purchase, starting at $74.99 per year. Whichever you choose, the download price is not the number that matters.

Protein Habit ships an update weekly, Ferris every 5 days. The most recent releases landed on September 9, 2026 and June 7, 2026 respectively.

## The numbers

| Metric | Protein Habit | Ferris |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (31 ratings)](https://appshunter.io/ios/app/ferris-ai-obsession-coach/id6753602798/reviews)** |
| Number of ratings | — | **31** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | — | Subscription |
| Size | 44 MB | 40 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [North of 60 Labs](https://appshunter.io/developer/1794675077) | [Jamison Mercurio](https://appshunter.io/developer/1840553556) |

## What reviewers say

### Protein Habit

[App page](https://appshunter.io/ios/app/protein-habit/id6745103818)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Monthly | $2.99 | per month |
| Pro Monthly | $7.99 | per month |
| Basic Yearly | $12.99 | per year |
| Pro Yearly | $29.99 | per year |


### Ferris

[App page](https://appshunter.io/ios/app/ferris-ai-obsession-coach/id6753602798)

This app provides instant, anonymous support for intrusive thoughts and compulsions. It offers step-by-step guidance, beginner lessons, and advanced exposure planning, all created by mental health specialists. Your privacy is protected with encryption and nickname usage.

**Highlights:** Instant, scenario-specific ERP coaching, Beginner obsession lessons, Advanced exposure planning, Progress tracking, Private by design, Real human support

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ferris Annual Membership | $74.99 | per year |


## Frequently asked questions

### Is Protein Habit free?

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

### Is Ferris free?

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

### Do Protein Habit or Ferris have ads?

Neither Protein Habit nor Ferris shows ads.

### Which is updated more often, Protein Habit or Ferris?

Protein Habit ships an update weekly, and Ferris every 5 days. Most recently, Protein Habit was updated on September 9, 2026 and Ferris on June 7, 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.*