# Heat 1 vs circle21 Live

The clearest difference is update cadence: Heat 1 at every 5 days against circle21 Live's every 5 months. circle21 Live's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Heat 1 ships an update every 5 days, circle21 Live every 5 months. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Heat 1 | circle21 Live |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 5 months |
| Monetization | Free | — |
| Size | 30 MB | 38 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Adam Ambrosius](https://appshunter.io/developer/1393130098) | [circle21](https://appshunter.io/developer/1582295160) |

## 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


### circle21 Live

[App page](https://appshunter.io/ios/app/circle21-live/id6738966878)

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

**In-app purchases:** none


## Frequently asked questions

### Is Heat 1 free?

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

### Is circle21 Live free?

circle21 Live is free to download, with no in-app purchases.

### Do Heat 1 or circle21 Live have ads?

Neither Heat 1 nor circle21 Live shows ads.

### Which is updated more often, Heat 1 or circle21 Live?

Heat 1 ships an update every 5 days, and circle21 Live every 5 months. Most recently, Heat 1 was updated on November 3, 2026 and circle21 Live on November 8, 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.*