# second sight vs iHDジャパン公式アプリ

The clearest difference is update cadence: second sight at every 6 days against iHDジャパン公式アプリ's every 31 months. second sight also leads on iOS requirement (11.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

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

second sight ships an update every 6 days, iHDジャパン公式アプリ every 31 months. The most recent releases landed on September 8, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | second sight | iHDジャパン公式アプリ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 31 months |
| Size | 10 MB | 77 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [TOSCOM CO,.LTD.](https://appshunter.io/developer/1300048479) | [AIHO-RUDHINGUSUJAPAN K.K.](https://appshunter.io/developer/1680666979) |

## What reviewers say

### second sight

[App page](https://appshunter.io/ios/app/second-sight/id1447770269)

**Features:** macOS Compatibility

**In-app purchases:** none


### iHDジャパン公式アプリ

[App page](https://appshunter.io/ios/app/ihd/id6447232915)

**In-app purchases:** none


## Frequently asked questions

### Is second sight free?

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

### Is iHDジャパン公式アプリ free?

iHDジャパン公式アプリ is free to download, with no in-app purchases.

### Do second sight or iHDジャパン公式アプリ have ads?

Neither second sight nor iHDジャパン公式アプリ shows ads.

### Which is updated more often, second sight or iHDジャパン公式アプリ?

second sight ships an update every 6 days, and iHDジャパン公式アプリ every 31 months. Most recently, second sight was updated on September 8, 2026 and iHDジャパン公式アプリ on September 10, 2026.

---

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