# i vs 請求書・見積書作成

The clearest difference is in-app purchases: i at none against 請求書・見積書作成's 1. i also leads on iOS requirement (14.0 vs 16.4). 請求書・見積書作成's advantage is update cadence (every 10 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. 請求書・見積書作成 sells 1 one-off in-app purchase. i asks for nothing beyond the download.

i ships an update every 3 months, 請求書・見積書作成 every 10 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | i | 請求書・見積書作成 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Size | 2 MB | 137 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Visual Research](https://appshunter.io/developer/414644965) | [B-track, K.K.](https://appshunter.io/developer/1840547652) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-sp/id911689437)

**In-app purchases:** none


### 請求書・見積書作成

[App page](https://appshunter.io/ios/app/gooodbilling/id6782245223)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全機能解錠 | $9.99 | one-time |


## Frequently asked questions

### Is i free?

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

### Is 請求書・見積書作成 free?

請求書・見積書作成 is free to download, with in-app purchases available.

### Do i or 請求書・見積書作成 have ads?

Neither i nor 請求書・見積書作成 shows ads.

### Which is updated more often, i or 請求書・見積書作成?

i ships an update every 3 months, and 請求書・見積書作成 every 10 days. Most recently, i was updated on October 26, 2026 and 請求書・見積書作成 on October 25, 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.*