# iCanQuitPlus vs Co

The clearest difference is update cadence: Co at every 4 weeks against iCanQuitPlus's every 4 months. 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.

iCanQuitPlus ships an update every 4 months, Co every 4 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | iCanQuitPlus | Co |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/co-dx-research/id6449950612/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 weeks** |
| Monetization | — | Free |
| Size | 108 MB | 192 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Fred Hutch Cancer Research Center](https://appshunter.io/developer/1205729311) | [Co-Diagnostics, Inc.](https://appshunter.io/developer/1615602895) |

## What reviewers say

### iCanQuitPlus

[App page](https://appshunter.io/ios/app/icanquitplus/id1659950393)

**In-app purchases:** none


### Co

[App page](https://appshunter.io/ios/app/co-dx-research/id6449950612)

This educational app assists users in testing samples for PMMV presence. It serves as a tool for research and learning purposes, providing a guided process for sample analysis.

**Highlights:** PMMV sample testing guidance, Educational tool, Research purposes, Official release version

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iCanQuitPlus free?

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

### Is Co free?

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

### Do iCanQuitPlus or Co have ads?

Neither iCanQuitPlus nor Co shows ads.

### Which is updated more often, iCanQuitPlus or Co?

iCanQuitPlus ships an update every 4 months, and Co every 4 weeks. Most recently, iCanQuitPlus was updated on November 3, 2026 and Co on November 3, 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.*