# アマONE～せどりオールインワンツール～ vs 100日目標チャレンジ

The clearest difference is update cadence: アマONE～せどりオールインワンツール～ at every 4 weeks against 100日目標チャレンジ's every 2 months. アマONE～せどりオールインワンツール～ also leads on iOS requirement (12.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. アマONE～せどりオールインワンツール～ sells 1 in-app purchase, starting at $58.99 per month and 100日目標チャレンジ sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

アマONE～せどりオールインワンツール～ ships an update every 4 weeks, 100日目標チャレンジ every 2 months. The most recent releases landed on June 27, 2026 and August 20, 2026 respectively.

## The numbers

| Metric | アマONE～せどりオールインワンツール～ | 100日目標チャレンジ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 92.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 119 MB | 44 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Watermelon Software Solution Japan, Inc.](https://appshunter.io/developer/1263198404) | [Reo Takabatake](https://appshunter.io/developer/1888701948) |

## What reviewers say

### アマONE～せどりオールインワンツール～

[App page](https://appshunter.io/ios/app/one/id1579675728)

This tool helps sellers quickly compare product prices across Amazon, Rakuten, and Yahoo Shopping by scanning barcodes or searching keywords. It offers detailed profit calculations, alerts for valuable items, and integrates with web versions for product management.

**Highlights:** Barcode scanning for price comparison, Cross-platform price checks (Amazon, Rakuten, Yahoo), Automatic profit and fee calculation, Real-time price and ranking data, Alerts for high-value products, Web version integration for product management

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dominator継続課金 | $58.99 | per month |


### 100日目標チャレンジ

[App page](https://appshunter.io/ios/app/100/id6761291437)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro 月額 | $3.99 | per month |


## Frequently asked questions

### Is アマONE～せどりオールインワンツール～ free?

アマONE～せどりオールインワンツール～ is free to download, with in-app purchases available.

### Is 100日目標チャレンジ free?

100日目標チャレンジ is free to download, with in-app purchases available.

### Do アマONE～せどりオールインワンツール～ or 100日目標チャレンジ have ads?

Neither アマONE～せどりオールインワンツール～ nor 100日目標チャレンジ shows ads.

### Which is updated more often, アマONE～せどりオールインワンツール～ or 100日目標チャレンジ?

アマONE～せどりオールインワンツール～ ships an update every 4 weeks, and 100日目標チャレンジ every 2 months. Most recently, アマONE～せどりオールインワンツール～ was updated on June 27, 2026 and 100日目標チャレンジ on August 20, 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.*