# 対局時計Simple vs FlowCalendar

The clearest difference is update cadence: FlowCalendar at every 2 days against 対局時計Simple's every 8 months. 対局時計Simple's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

対局時計Simple ships an update every 8 months, FlowCalendar every 2 days. The most recent releases landed on September 22, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | 対局時計Simple | FlowCalendar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 days** |
| Size | 64 MB | 15 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tsubasa Hizono](https://appshunter.io/developer/1682928043) | [Masayuki Honda](https://appshunter.io/developer/1568838876) |

## What reviewers say

### 対局時計Simple

[App page](https://appshunter.io/ios/app/simple/id6447896409)

**In-app purchases:** none


### FlowCalendar

[App page](https://appshunter.io/ios/app/flowcalendar/id6749845502)

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

**In-app purchases:** none


## Frequently asked questions

### Is 対局時計Simple free?

対局時計Simple is free to download, with no in-app purchases.

### Is FlowCalendar free?

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

### Do 対局時計Simple or FlowCalendar have ads?

Neither 対局時計Simple nor FlowCalendar shows ads.

### Which is updated more often, 対局時計Simple or FlowCalendar?

対局時計Simple ships an update every 8 months, and FlowCalendar every 2 days. Most recently, 対局時計Simple was updated on September 22, 2026 and FlowCalendar on September 27, 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.*