# Hakoniwa AI vs Study Countdown

The clearest difference is ads: Hakoniwa AI at none against Study Countdown's shown. Hakoniwa AI also leads on update cadence (daily vs every 8 days) and device support (3 vs 1). On price 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.

Hakoniwa AI ships an update daily, Study Countdown every 8 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Hakoniwa AI | Study Countdown |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 8 days |
| Size | 27 MB | 14 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [SHIN TOMURA](https://appshunter.io/developer/1826530290) | [kaisei watanabe](https://appshunter.io/developer/1543587757) |

## What reviewers say

### Hakoniwa AI

[App page](https://appshunter.io/ios/app/hakoniwa-ai/id6759540294)

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

**In-app purchases:** none


### Study Countdown

[App page](https://appshunter.io/ios/app/study-countdown-focus-log/id6765840155)

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

**In-app purchases:** none


## Frequently asked questions

### Is Hakoniwa AI free?

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

### Is Study Countdown free?

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

### Do Hakoniwa AI or Study Countdown have ads?

Study Countdown shows ads; Hakoniwa AI does not.

### Which is updated more often, Hakoniwa AI or Study Countdown?

Hakoniwa AI ships an update daily, and Study Countdown every 8 days. Most recently, Hakoniwa AI was updated on October 24, 2026 and Study Countdown on October 28, 2026.

---

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