# Co vs WatchBMI

The clearest difference is price: Co at Free against WatchBMI's $0.99. WatchBMI's advantage is update cadence (daily vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Co is free to download; WatchBMI costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Co ships an update every 2 months, WatchBMI daily. The most recent releases landed on September 19, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Co | WatchBMI |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/co-deo/id1562076177/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Free | — |
| Size | 57 MB | 0 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [QuestionPro.com](https://appshunter.io/developer/735011822) | [James Nachbar](https://appshunter.io/developer/1755655828) |

## What reviewers say

### Co

[App page](https://appshunter.io/ios/app/co-deo/id1562076177)

Participate in weekly surveys, polls, and forum discussions to share your opinions and experiences. Earn points for your engagement, redeemable for gift cards. All data is used for research purposes.

**Highlights:** Weekly exercises, Topics and forums, Online surveys, Quick polls, Earn points, Redeem for gift cards

**Features:** macOS Compatibility

**In-app purchases:** none


### WatchBMI

[App page](https://appshunter.io/ios/app/watchbmi/id6514276372)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Co free?

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

### Is WatchBMI free?

WatchBMI costs $0.99, with no in-app purchases.

### Do Co or WatchBMI have ads?

Neither Co nor WatchBMI shows ads.

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

Co ships an update every 2 months, and WatchBMI daily. Most recently, Co was updated on September 19, 2026 and WatchBMI on September 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.*