# UMAI vs 競馬のaiちゃん

The clearest difference is review sentiment: 競馬のaiちゃん at 100% against UMAI's 33%. UMAI's advantage is in-app purchases (none vs 2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 競馬のaiちゃん sells 2 in-app purchases, starting at $1.99 per month. UMAI asks for nothing beyond the download.

UMAI ships an update every 3 weeks, 競馬のaiちゃん monthly. The most recent releases landed on July 30, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | UMAI | 競馬のaiちゃん |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 29 MB | 31 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Takeshi Watanabe](https://appshunter.io/developer/1602925258) | [wading.net](https://appshunter.io/developer/1699320112) |

## What reviewers say

### UMAI

[App page](https://appshunter.io/ios/app/umai-ai/id1602925256)

This app provides free AI-powered horse racing predictions for all central and local races. It features an improved UI for faster loading and displays AI confidence levels, key race indicators, and past results. Users can also access race entry information directly within the app.

**Highlights:** Free AI race predictions, Central and local race coverage, Improved UI/UX, AI confidence indicators, Race entry information, Latest winning information

**Features:** macOS Compatibility

**In-app purchases:** none


### 競馬のaiちゃん

[App page](https://appshunter.io/ios/app/ai/id6477750201)

This app uses AI to predict horse races based on performance, bloodlines, and other factors. It provides real-time race results, manages your betting finances, and offers detailed statistical analysis. Designed for horse racing enthusiasts to improve their strategy and track their performance.

**Highlights:** AI race predictions, Real-time race results, Financial management tools, Statistical analysis, Dark mode support, Multi-device data sync

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 基本プラン月額 | $1.99 | per month |
| プレミアムプラン | $19.99 | per year |


## Frequently asked questions

### Is UMAI free?

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

### Is 競馬のaiちゃん free?

競馬のaiちゃん is free to download, with in-app purchases available.

### Do UMAI or 競馬のaiちゃん have ads?

Both UMAI and 競馬のaiちゃん show ads.

### Which is updated more often, UMAI or 競馬のaiちゃん?

UMAI ships an update every 3 weeks, and 競馬のaiちゃん monthly. Most recently, UMAI was updated on July 30, 2026 and 競馬のaiちゃん on September 19, 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.*