Koku vs tocnz
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Koku
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.
- 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
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Koku is a focus timer for deep work. Focus. Rest. Repeat. Set your own session lengths or use the classic rhythm - twenty-five minutes of focus, five minutes of rest, a longer break every four sessions. Each minute is a dot. Watch them fill. - No accounts. - No streaks. - No subscriptions. Just time, and the work in front of you. Add Koku to your Home Screen for quick access - start, pause, and skip sessions right from the widget. Keep the timer visible on your lock screen with Live Activities. Koku also includes an Apple Watch companion app that works with the iPhone app, so you can check your timer and control sessions from your wrist. Designed for iPhone, with an Apple Watch companion. Light and dark mode. Works in any language. Koku (刻) is the Japanese word for a moment of time.
tocnz
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tocnz helps you flip quickly from distraction to focus. - Start a focus session with one flip. - Set clear work intervals and stay on track. - Track progress over days and weeks. - Review sessions and improve your focus rhythm. Built for people who want simple structure, minimal friction, and better daily concentration. Focus mode keeps your workflow organized so you can start now, stay present, and finish with less switching. ------------ Subscription note: tocnz Pro is an optional auto-renewing subscription available with monthly and annual plans.Subscriptions auto-renew unless canceled at least 24 hours before renewal in Apple ID > Subscriptions. Pricing, free trial options, and tax details are shown before purchase. You can cancel anytime. Terms of Use: https://www.ningdom.com/terms.html Privacy Policy: https://www.ningdom.com/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: Koku at none against tocnz's 2. Koku also leads on update cadence (every 3 days vs every 4 weeks). tocnz's advantage is iOS requirement (17.0 vs 26.4). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. tocnz sells 2 in-app purchases, starting at $1.99 per month. Koku asks for nothing beyond the download.
Koku ships an update every 3 days, tocnz every 4 weeks. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.
| Parameter | Koku | tocnz |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 days — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Requires iOS | 26.4 | 17.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Rodolfo Alberto Lopez Terriquez | Beijing Ningdom Technology Co., Ltd. |
In-app purchases
Koku
No in-app purchases
tocnz
- Monthly$1.991 Month
- Yearly$12.991 Year









