# Biblos vs COBISS Plus

The clearest difference is update cadence: COBISS Plus at weekly against Biblos's every 4 months. Biblos's advantage is iOS requirement (15.0 vs 18.2). 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.

Biblos ships an update every 4 months, COBISS Plus weekly. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Biblos | COBISS Plus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Size | 63 MB | 33 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 9+ |
| Developer | [Studentska zalozba apps](https://appshunter.io/developer/646365946) | [IZUM](https://appshunter.io/developer/687682315) |

## What reviewers say

### Biblos

[App page](https://appshunter.io/ios/app/biblos/id6467762825)

**Features:** macOS Compatibility

**In-app purchases:** none


### COBISS Plus

[App page](https://appshunter.io/ios/app/cobiss-plus/id6757426945)

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

**In-app purchases:** none


## Frequently asked questions

### Is Biblos free?

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

### Is COBISS Plus free?

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

### Do Biblos or COBISS Plus have ads?

Neither Biblos nor COBISS Plus shows ads.

### Which is updated more often, Biblos or COBISS Plus?

Biblos ships an update every 4 months, and COBISS Plus weekly. Most recently, Biblos was updated on October 7, 2026 and COBISS Plus on October 14, 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.*