# Boost IV vs Co

The clearest difference is ads: Boost IV at none against Co's shown. Boost IV also leads on iOS requirement (13.0 vs 17.6). Co's advantage is update cadence (every 4 days vs every 9 months). On price, 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.

Boost IV ships an update every 9 months, Co every 4 days. The most recent releases landed on October 1, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Boost IV | Co |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (12 ratings)](https://appshunter.io/ios/app/co-author/id6754661365/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 4 days** |
| Monetization | — | Ad-supported |
| Size | 73 MB | 14 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Boost IV LLC](https://appshunter.io/developer/1780954883) | [Daniel Benjamin Ipsen](https://appshunter.io/developer/1849495769) |

## What reviewers say

### Boost IV

[App page](https://appshunter.io/ios/app/boost-iv/id6738464761)

**In-app purchases:** none


### Co

[App page](https://appshunter.io/ios/app/co-author/id6754661365)

Transform your memories into written stories using photos, text, or voice. This AI-powered companion helps you focus on narrative creation, not prompt engineering. Share your finished pieces easily via text, email, or a web link.

**Highlights:** AI-powered writing assistance, Input via photos, text, or voice, Focus on storytelling, Shareable web links for stories, Collaboration tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Boost IV free?

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

### Is Co free?

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

### Do Boost IV or Co have ads?

Co shows ads; Boost IV does not.

### Which is updated more often, Boost IV or Co?

Boost IV ships an update every 9 months, and Co every 4 days. Most recently, Boost IV was updated on October 1, 2026 and Co on October 15, 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.*