# Mastermind vs DietCam

The clearest difference is update cadence: DietCam at every 5 days against Mastermind's monthly. Mastermind's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Mastermind sells 9 in-app purchases, starting at $9.99 per 7 days and DietCam sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Mastermind ships an update monthly, DietCam every 5 days. Both last shipped on October 15, 2026.

## The numbers

| Metric | Mastermind | DietCam |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (53 ratings)](https://appshunter.io/ios/app/mastermind-self-improvement/id6745372849/reviews)** | — |
| Number of ratings | **53** | — |
| Positive reviews | 63.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 75 MB | 23 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MYKS Labs Inc.](https://appshunter.io/developer/1803280982) | [旻 蔡](https://appshunter.io/developer/1454667188) |

## What reviewers say

### Mastermind

[App page](https://appshunter.io/ios/app/mastermind-self-improvement/id6745372849)

This app provides a personalized habit-building system based on behavioral psychology. It assesses your needs, creates a scalable habit sequence, and offers daily coaching and progress tracking to foster lasting life changes.

**Highlights:** Personalized habit assessment, Progressive habit scaling, Daily coaching and insights, Real-time progress tracking, Gamified progress system, Evidence-based habit library

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mastermind: Self Improvement | $9.99 | per 7 days |
| Mastermind: Self Improvement | $14.99 | per month |
| Mastermind: Self Improvement | $19.99 | per month |
| Mastermind: Self Improvement | $29.99 | per year |
| Mastermind: Self Improvement | $34.99 | per 3 months |
| Mastermind: Self Improvement | $39.99 | per year |
| Mastermind: Self Improvement | $39.99 | per year |
| Mastermind: Self Improvement | $49.99 | per year |
| Mastermind: Self Improvement | $59.99 | per year |


### DietCam

[App page](https://appshunter.io/ios/app/dietcam/id6761427686)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DietCam Plus Weekly | $4.99 | per 7 days |
| DietCam Plus Monthly | $19.99 | per month |
| DietCam Plus Annual | $199.99 | per year |


## Frequently asked questions

### Is Mastermind free?

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

### Is DietCam free?

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

### Do Mastermind or DietCam have ads?

Neither Mastermind nor DietCam shows ads.

### Which is updated more often, Mastermind or DietCam?

Mastermind ships an update monthly, and DietCam every 5 days. Most recently, Mastermind was updated on October 15, 2026 and DietCam on October 15, 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.*