# DayZen vs SelfMastery 30

The clearest difference is in-app purchases: SelfMastery 30 at none against DayZen's 3. SelfMastery 30 also leads on update cadence (every 9 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. DayZen sells 3 in-app purchases, starting at $2.99 per month. SelfMastery 30 asks for nothing beyond the download.

DayZen ships an update monthly, SelfMastery 30 every 9 days. The most recent releases landed on October 20, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | DayZen | SelfMastery 30 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (4 ratings)](https://appshunter.io/ios/app/dayzen-visual-time-planner/id6754326173/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Freemium | — |
| Size | 7 MB | 2 MB |
| Requires iOS | **17** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Joris Kavolis](https://appshunter.io/developer/1808019616) | [Rayhan Chowdhury](https://appshunter.io/developer/1896153949) |

## What reviewers say

### DayZen

[App page](https://appshunter.io/ios/app/dayzen-visual-time-planner/id6754326173)

This app transforms your schedule into a visual 24-hour clock, making time concrete and manageable. It's designed to combat time blindness and anxiety for neurodivergent individuals by visualizing tasks as colored arcs on a clock face.

**Highlights:** Visual 24-hour clock schedule, Task arcs and time blocking, ADHD-friendly interface, Live Activities & Dynamic Island, Immersive Focus Mode, Calendar integration, Home Screen widgets

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Yearly Premium | $19.99 | per year |
| Lifetime | $24.99 | one-time |


### SelfMastery 30

[App page](https://appshunter.io/ios/app/selfmastery-30/id6806044644)

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

**In-app purchases:** none


## Frequently asked questions

### Is DayZen free?

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

### Is SelfMastery 30 free?

SelfMastery 30 is free to download, with no in-app purchases.

### Do DayZen or SelfMastery 30 have ads?

Neither DayZen nor SelfMastery 30 shows ads.

### Which is updated more often, DayZen or SelfMastery 30?

DayZen ships an update monthly, and SelfMastery 30 every 9 days. Most recently, DayZen was updated on October 20, 2026 and SelfMastery 30 on October 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*