# B17.ru vs Sereliz

The clearest difference is update cadence: Sereliz at every 3 weeks against B17.ru's every 11 months. B17.ru's advantage is iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

B17.ru ships an update every 11 months, Sereliz every 3 weeks. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | B17.ru | Sereliz |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 22.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 22 MB | 7 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [B17.RU LLC](https://appshunter.io/developer/1294866339) | [Sergei Aleshin](https://appshunter.io/developer/1829031980) |

## What reviewers say

### B17.ru

[App page](https://appshunter.io/ios/app/b17ru/id1637387043)

Access psychological consultations, engage in forum discussions with peers and professionals, and read informative articles. Features a user-friendly interface and push notifications for new messages.

**Highlights:** Psychological consultations, Psychology forum, Thematic articles, User-friendly interface, Push notifications

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

**In-app purchases:** none


### Sereliz

[App page](https://appshunter.io/ios/app/sereliz/id6799691011)

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

**In-app purchases:** none


## Frequently asked questions

### Is B17.ru free?

B17.ru is free to download, with no in-app purchases.

### Is Sereliz free?

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

### Do B17.ru or Sereliz have ads?

Neither B17.ru nor Sereliz shows ads.

### Which is updated more often, B17.ru or Sereliz?

B17.ru ships an update every 11 months, and Sereliz every 3 weeks. Most recently, B17.ru was updated on October 17, 2026 and Sereliz on October 6, 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.*