# igotimer vs Go Clock Duo

The clearest difference is in-app purchases: igotimer at none against Go Clock Duo's 3. igotimer also leads on iOS requirement (9.2 vs 26.0). Go Clock Duo's advantage is update cadence (every 2 months vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. Go Clock Duo sells 3 in-app purchases, starting at $0.99 per month. igotimer asks for nothing beyond the download.

igotimer ships an update every 5 months, Go Clock Duo every 2 months. The most recent releases landed on November 1, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | igotimer | Go Clock Duo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/igotimer/id622114581/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 2 MB | 14 MB |
| Requires iOS | **9.2** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Takashi Takeda](https://appshunter.io/developer/597204968) | [Vincent Grellert](https://appshunter.io/developer/1886984960) |

## What reviewers say

### igotimer

[App page](https://appshunter.io/ios/app/igotimer/id622114581)

This application serves as a game clock specifically designed for the board game Go. It offers multiple time control modes, customizable settings for main time and overtime periods, and audible countdowns in various languages or beeps.

**Highlights:** Four time control modes, Customizable main time, Configurable byoyomi/kouryo time, Handicap settings, Audible countdowns (Japanese, English, beeps)

**Features:** macOS Compatibility

**In-app purchases:** none


### Go Clock Duo

[App page](https://appshunter.io/ios/app/go-clock-duo-byoyomi-timer/id6795444077)

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Yearly | $8.99 | per year |
| Byoyomi Timer Pro | $24.99 | one-time |


## Frequently asked questions

### Is igotimer free?

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

### Is Go Clock Duo free?

Go Clock Duo is free to download, with in-app purchases available.

### Do igotimer or Go Clock Duo have ads?

Neither igotimer nor Go Clock Duo shows ads.

### Which is updated more often, igotimer or Go Clock Duo?

igotimer ships an update every 5 months, and Go Clock Duo every 2 months. Most recently, igotimer was updated on November 1, 2026 and Go Clock Duo on November 10, 2026.

---

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