# Koku vs Flow

The clearest difference is in-app purchases: Koku at none against Flow's 3. Koku also leads on update cadence (every 3 days vs every 5 weeks). Flow's advantage is iOS requirement (17.2 vs 26.4). On price, ads and device support there is nothing between them.

Both are free to download. Flow sells 3 in-app purchases, starting at $1.99 per month. Koku asks for nothing beyond the download.

Koku ships an update every 3 days, Flow every 5 weeks. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Koku | Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/koku-focus-timer/id6767715863/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 5 weeks |
| Monetization | Free | — |
| Size | 10 MB | 11 MB |
| Requires iOS | 26.4 | **17.2** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Rodolfo Alberto Lopez Terriquez](https://appshunter.io/developer/1896502707) | [Neerav Kothari](https://appshunter.io/developer/1081411587) |

## What reviewers say

### Koku

[App page](https://appshunter.io/ios/app/koku-focus-timer/id6767715863)

This app helps you focus on tasks with customizable work and rest intervals. It offers a simple, distraction-free interface and integrates with your home screen and Apple Watch for easy access and control. Enjoy deep work without accounts, streaks, or subscriptions.

**Highlights:** Customizable focus and rest sessions, Classic Pomodoro rhythm option, Home Screen widget for quick access, Live Activities on lock screen, Apple Watch companion app, Minimalist, distraction-free design

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

**In-app purchases:** none


### Flow

[App page](https://appshunter.io/ios/app/flow-focus-timer/id6771008124)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $1.99 | per month |
| Yearly Pro | $14.99 | per year |
| Weekly Pass | $0.99 | one-time |


## Frequently asked questions

### Is Koku free?

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

### Is Flow free?

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

### Do Koku or Flow have ads?

Neither Koku nor Flow shows ads.

### Which is updated more often, Koku or Flow?

Koku ships an update every 3 days, and Flow every 5 weeks. Most recently, Koku was updated on October 31, 2026 and Flow 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.*