# 株カレンダー vs IFAI

The clearest difference is in-app purchases: IFAI at none against 株カレンダー's 3. IFAI also leads on ads (none vs shown). 株カレンダー's advantage is update cadence (every 5 days vs every 6 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 株カレンダー sells 3 in-app purchases, starting at $2.99 per month. IFAI asks for nothing beyond the download.

株カレンダー ships an update every 5 days, IFAI every 6 weeks. The most recent releases landed on October 30, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 株カレンダー | IFAI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 106 MB | 61 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ikue Konno](https://appshunter.io/developer/971968281) | [nicosphere](https://appshunter.io/developer/1893501713) |

## What reviewers say

### 株カレンダー

[App page](https://appshunter.io/ios/app/ai/id6754214036)

This tool provides Japanese stock investors with real-time notifications for corporate disclosures, AI-powered summaries of filings, and integrated calendar management for earnings and IPO schedules. It helps streamline information gathering and investment decision-making.

**Highlights:** Real-time disclosure notifications, AI-powered filing summaries, Earnings and IPO calendar management, Favorite stock tracking with reminders, Customizable stock grouping, IR disclosure notes and investment journal

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $2.99 | per month |
| ライフタイムプレミアム（期間限定） | $29.99 | one-time |
| ライフタイムプレミアムプラン | $39.99 | one-time |


### IFAI

[App page](https://appshunter.io/ios/app/ifai-ai/id6764511534)

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

**In-app purchases:** none


## Frequently asked questions

### Is 株カレンダー free?

株カレンダー is free to download, with in-app purchases available.

### Is IFAI free?

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

### Do 株カレンダー or IFAI have ads?

株カレンダー shows ads; IFAI does not.

### Which is updated more often, 株カレンダー or IFAI?

株カレンダー ships an update every 5 days, and IFAI every 6 weeks. Most recently, 株カレンダー was updated on October 30, 2026 and IFAI on October 18, 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.*