# option戦略 vs Trend Calendar

The clearest difference is review sentiment: option戦略 at 73% against Trend Calendar's 33%. option戦略 also leads on ads (none vs shown). Trend Calendar's advantage is in-app purchases (none vs 4) and update cadence (weekly vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. option戦略 sells 4 in-app purchases, starting at $6.99 per month. Trend Calendar asks for nothing beyond the download.

option戦略 ships an update every 3 weeks, Trend Calendar weekly. The most recent releases landed on October 26, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | option戦略 | Trend Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **73.3% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 10 MB | 77 MB |
| Requires iOS | 15.4 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MASAAKI SAKAIDA](https://appshunter.io/developer/626122800) | [Hiroto Noguchi](https://appshunter.io/developer/1265359286) |

## What reviewers say

### option戦略

[App page](https://appshunter.io/ios/app/option/id626122797)

This system helps you strategize Nikkei 225 options trading. It allows you to check option information, consider strategies, and simulate positions. Access advanced features like IV curves and support information with a premium subscription.

**Highlights:** IV smile and delta/gamma/theta/vega curves, Option list with open interest and volume graphs, Basic, advanced, and custom strategy registration, Position simulation with price and IV changes, Premium support information (SKEW, VI charts, forecasts), Mini options support (limited)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 自動更新 | $6.99 | per month |
| 自動更新 | $19.99 | per 3 months |
| 自動更新 | $29.99 | per 6 months |
| 自動更新 | $59.99 | per year |


### Trend Calendar

[App page](https://appshunter.io/ios/app/trend-calendar/id6736881246)

Stay informed about economic indicators with a comprehensive calendar of upcoming releases. Analyze historical currency movements tied to these events to make better-informed financial decisions.

**Highlights:** Economic Indicator Calendar, Upcoming release notifications, Historical currency movement analysis, Stock and Forex trend tracking, Informed decision-making tools

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is option戦略 free?

option戦略 is free to download, with in-app purchases available.

### Is Trend Calendar free?

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

### Do option戦略 or Trend Calendar have ads?

Trend Calendar shows ads; option戦略 does not.

### Which is updated more often, option戦略 or Trend Calendar?

option戦略 ships an update every 3 weeks, and Trend Calendar weekly. Most recently, option戦略 was updated on October 26, 2026 and Trend Calendar on October 15, 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.*