# Custom Prediction ~ 自由に予言できる vs HAPPY RAT

The clearest difference is price: HAPPY RAT at Free against Custom Prediction ~ 自由に予言できる's $1.99. HAPPY RAT also leads on update cadence (every 3 weeks vs every 6 weeks). Custom Prediction ~ 自由に予言できる's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 15.0). On ads and device support there is nothing between them.

HAPPY RAT is free to download; Custom Prediction ~ 自由に予言できる costs $1.99 up front. HAPPY RAT sells 1 one-off in-app purchase. Custom Prediction ~ 自由に予言できる asks for nothing beyond the download.

Custom Prediction ~ 自由に予言できる ships an update every 6 weeks, HAPPY RAT every 3 weeks. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Custom Prediction ~ 自由に予言できる | HAPPY RAT |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 42 MB | 235 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 9+ |
| Developer | [Moving Squad Inc.](https://appshunter.io/developer/1004830155) | [SpiralAI Inc.](https://appshunter.io/developer/1801163634) |

## What reviewers say

### Custom Prediction ~ 自由に予言できる

[App page](https://appshunter.io/ios/app/custom-prediction/id6459885605)

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

**In-app purchases:** none


### HAPPY RAT

[App page](https://appshunter.io/ios/app/happy-rat/id6743077018)

Engage in emotionally intelligent conversations with AI companions designed to provide comfort and companionship. These lively characters learn about you, offering personalized interactions and support to alleviate loneliness.

**Highlights:** Emotional AI conversations, Personalized character interactions, Comfort and companionship, Unique AI engine for natural talk, Bonding and trust building, Character learning and memory

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HAPPY PLUS | $79.99 | one-time |


## Frequently asked questions

### Is Custom Prediction ~ 自由に予言できる free?

Custom Prediction ~ 自由に予言できる costs $1.99, with no in-app purchases.

### Is HAPPY RAT free?

HAPPY RAT is free to download, with in-app purchases available.

### Do Custom Prediction ~ 自由に予言できる or HAPPY RAT have ads?

Neither Custom Prediction ~ 自由に予言できる nor HAPPY RAT shows ads.

### Which is updated more often, Custom Prediction ~ 自由に予言できる or HAPPY RAT?

Custom Prediction ~ 自由に予言できる ships an update every 6 weeks, and HAPPY RAT every 3 weeks. Most recently, Custom Prediction ~ 自由に予言できる was updated on October 24, 2026 and HAPPY RAT on October 21, 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.*