# Biosource vs Tailor Book

The clearest difference is ads: Biosource at none against Tailor Book's shown. Tailor Book's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence, 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.

Biosource ships an update every 11 days, Tailor Book fortnightly. The most recent releases landed on September 23, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Biosource | Tailor Book |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 11 days** | Fortnightly |
| Size | 72 MB | 82 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Enspire Media LLC](https://appshunter.io/developer/423028967) | [TWINSPIDER (SMC-PRIVATE) LIMITED](https://appshunter.io/developer/1583928547) |

## What reviewers say

### Biosource

[App page](https://appshunter.io/ios/app/biosource/id1574039511)

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

**In-app purchases:** none


### Tailor Book

[App page](https://appshunter.io/ios/app/tailor-book/id6720752754)

**In-app purchases:** none


## Frequently asked questions

### Is Biosource free?

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

### Is Tailor Book free?

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

### Do Biosource or Tailor Book have ads?

Tailor Book shows ads; Biosource does not.

### Which is updated more often, Biosource or Tailor Book?

Biosource ships an update every 11 days, and Tailor Book fortnightly. Most recently, Biosource was updated on September 23, 2026 and Tailor Book on September 12, 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.*