# Kurun vs Attention Flow

The clearest difference is in-app purchases: Attention Flow at none against Kurun's 5. Attention Flow also leads on device support (4 vs 2). Kurun's advantage is iOS requirement (15.1 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Kurun sells 5 in-app purchases, starting at $4.99 per month. Attention Flow asks for nothing beyond the download.

Kurun ships an update fortnightly, Attention Flow every 11 days. The most recent releases landed on October 25, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Kurun | Attention Flow |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 11 days** |
| Monetization | Free with in-app purchases | — |
| Size | 56 MB | 8 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [KYOSUKE WATANABE](https://appshunter.io/developer/1833049963) | [可心 周](https://appshunter.io/developer/1868083044) |

## What reviewers say

### Kurun

[App page](https://appshunter.io/ios/app/kurun-visual-daily-planner/id6759819620)

Visualize your entire day as a single pie chart to understand where your time is spent. Easily identify time sinks, imbalances, and gaps in your schedule. Organize tasks and log activities directly within the app.

**Highlights:** Full 24-hour pie chart visualization, Color-coded activity tracking, Spot untracked time gaps, Customizable activity categories, Built-in to-do list, Stopwatch and timer for direct logging

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kurun Pro Monthly | $4.99 | per month |
| Pro | $19.99 | per year |
| Kurun Pro Yearly | $34.99 | per year |
| Kurun Pro Lifetime | $39.99 | one-time |
| Kurun Pro Lifetime | $79.99 | one-time |


### Attention Flow

[App page](https://appshunter.io/ios/app/attention-flow/id6775757600)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Kurun free?

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

### Is Attention Flow free?

Attention Flow is free to download, with no in-app purchases.

### Do Kurun or Attention Flow have ads?

Neither Kurun nor Attention Flow shows ads.

### Which is updated more often, Kurun or Attention Flow?

Kurun ships an update fortnightly, and Attention Flow every 11 days. Most recently, Kurun was updated on October 25, 2026 and Attention Flow on October 7, 2026.

---

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