# OTOKAI vs Bulldog Samples

The clearest difference is in-app purchases: OTOKAI at none against Bulldog Samples's 4. Bulldog Samples's advantage is update cadence (every 3 days vs weekly) and iOS requirement (12.0 vs 15.5). On price, ads and device support there is nothing between them.

Both are free to download. Bulldog Samples sells 4 in-app purchases, starting at $5.99 per month. OTOKAI asks for nothing beyond the download.

OTOKAI ships an update weekly, Bulldog Samples every 3 days. The most recent releases landed on November 4, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | OTOKAI | Bulldog Samples |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Free | — |
| Size | 93 MB | 938 MB |
| Requires iOS | 15.5 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Amadeus Code Inc.](https://appshunter.io/developer/802869982) | [Jose Alcides101674355581](https://appshunter.io/developer/6778630777) |

## What reviewers say

### OTOKAI

[App page](https://appshunter.io/ios/app/otokai/id6499198233)

Engage your mind and brain with music through interactive listening, creative expression, and social connection. This app encourages active participation by comparing tracks, articulating feelings, and combining music with photos or videos. It fosters cognitive health and social well-being in a private environment.

**Highlights:** Interactive music listening, Create music and photo/video combinations, Closed social network for sharing, Brain activity enhancement, Daily brain health habit, Private and safe environment

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

**In-app purchases:** none


### Bulldog Samples

[App page](https://appshunter.io/ios/app/bulldog-samples/id6778630775)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plano Start | $5.99 | per month |
| Plano Pro | $7.99 | per month |
| Plano Start (Anual) | $59.99 | per year |
| Plano Pro (Anual) | $79.99 | per year |


## Frequently asked questions

### Is OTOKAI free?

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

### Is Bulldog Samples free?

Bulldog Samples is free to download, with in-app purchases available.

### Do OTOKAI or Bulldog Samples have ads?

Neither OTOKAI nor Bulldog Samples shows ads.

### Which is updated more often, OTOKAI or Bulldog Samples?

OTOKAI ships an update weekly, and Bulldog Samples every 3 days. Most recently, OTOKAI was updated on November 4, 2026 and Bulldog Samples on October 3, 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.*