# Heat 1 vs IntervalPro

The clearest difference is in-app purchases: Heat 1 at none against IntervalPro's 3. Heat 1 also leads on ads (none vs shown). IntervalPro's advantage is device support (3 vs 1). On price, update cadence and iOS requirement there is nothing between them.

Both are free to download. IntervalPro sells 3 in-app purchases, starting at $1.99 per month. Heat 1 asks for nothing beyond the download.

Heat 1 ships an update every 5 days, IntervalPro every 3 days. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Heat 1 | IntervalPro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (47 ratings)](https://appshunter.io/ios/app/heat-1/id6446805959/reviews)** | — |
| Number of ratings | **47** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | **Every 3 days** |
| Monetization | Free | — |
| Size | 30 MB | 69 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Adam Ambrosius](https://appshunter.io/developer/1393130098) | [TwinSoftware](https://appshunter.io/developer/505069229) |

## 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


### IntervalPro

[App page](https://appshunter.io/ios/app/intervalpro/id6755501862)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $1.99 | per month |
| Premium Yearly | $9.99 | per year |
| IntervalPro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Heat 1 free?

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

### Is IntervalPro free?

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

### Do Heat 1 or IntervalPro have ads?

IntervalPro shows ads; Heat 1 does not.

### Which is updated more often, Heat 1 or IntervalPro?

Heat 1 ships an update every 5 days, and IntervalPro every 3 days. Most recently, Heat 1 was updated on October 4, 2026 and IntervalPro on October 9, 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.*