# Heat 1 vs Duo

The clearest difference is in-app purchases: Heat 1 at none against Duo's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Duo sells 1 one-off in-app purchase. Heat 1 asks for nothing beyond the download.

## The numbers

| Metric | Heat 1 | Duo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (48 ratings)](https://appshunter.io/ios/app/heat-1/id6446805959/reviews)** | — |
| Number of ratings | **48** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Monetization | Free | — |
| Size | 30 MB | 2 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Adam Ambrosius](https://appshunter.io/developer/1393130098) | [- ASADUZZAMAN](https://appshunter.io/developer/1831527874) |

## What reviewers say

### Heat 1

[App page](https://appshunter.io/ios/app/heat-1/id6446805959)

Engage in functional fitness competitions by predicting athlete performance. Participate in leagues and thrilling game types like Top 10 and Shot Caller to earn points and test your sports strategy.

**Highlights:** Follow functional fitness competitions, Participate in leagues, Top 10 athlete prediction game, Shot Caller pick-per-event game, Earn points based on predictions, Real-time engagement

**In-app purchases:** none


### Duo

[App page](https://appshunter.io/ios/app/duo-chess-clock-and-timer/id6808470200)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Duo Pro | $6.99 | one-time |


## Frequently asked questions

### Is Heat 1 free?

Heat 1 is free to download, with no in-app purchases.

### Is Duo free?

Duo is free to download, with in-app purchases available.

### Do Heat 1 or Duo have ads?

Neither Heat 1 nor Duo shows ads.

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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.*