# Diffu vs Philo

The clearest difference is in-app purchases: Philo at none against Diffu's 6. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Diffu sells 6 in-app purchases, starting at $2.99 per month. Philo asks for nothing beyond the download.

Diffu ships an update every 2 weeks, Philo every 3 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Diffu | Philo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 73 MB | 22 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Jeong-Hwan Jang](https://appshunter.io/developer/1880755654) | [Songah Choi](https://appshunter.io/developer/6775132872) |

## What reviewers say

### Diffu

[App page](https://appshunter.io/ios/app/diffu-something-to-say/id6759802088)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diffu Premium | $2.99 | per month |
| Diffu Premium | $29.99 | per year |
| 100 엠버 | $0.49 | one-time |
| 500 엠버 | $2.99 | one-time |
| 1000 엠버 | $6.99 | one-time |
| 3000 엠버 | $19.99 | one-time |


### Philo

[App page](https://appshunter.io/ios/app/philo-chat-with-philosophers/id6775132870)

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

**In-app purchases:** none


## Frequently asked questions

### Is Diffu free?

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

### Is Philo free?

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

### Do Diffu or Philo have ads?

Both Diffu and Philo show ads.

### Which is updated more often, Diffu or Philo?

Diffu ships an update every 2 weeks, and Philo every 3 weeks. Most recently, Diffu was updated on October 24, 2026 and Philo on October 28, 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.*