# Forsta SDK vs HeatNext

The clearest difference is in-app purchases: Forsta SDK at none against HeatNext's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. HeatNext sells 4 in-app purchases, starting at $1.99 per month. Forsta SDK asks for nothing beyond the download.

Forsta SDK ships an update every 3 months, HeatNext every 2 months. The most recent releases landed on October 8, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Forsta SDK | HeatNext |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 24 MB | 44 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Forsta, Inc.](https://appshunter.io/developer/670071637) | [Nomnio](https://appshunter.io/developer/1440372439) |

## What reviewers say

### Forsta SDK

[App page](https://appshunter.io/ios/app/forsta-sdk/id1112679857)

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

**In-app purchases:** none


### HeatNext

[App page](https://appshunter.io/ios/app/heatnext/id1440372440)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Package | $1.99 | per month |
| Advanced Package | $3.99 | per month |
| Plus Package | $18.99 | per year |
| Advanced Package | $37.99 | per year |


## Frequently asked questions

### Is Forsta SDK free?

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

### Is HeatNext free?

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

### Do Forsta SDK or HeatNext have ads?

Neither Forsta SDK nor HeatNext shows ads.

### Which is updated more often, Forsta SDK or HeatNext?

Forsta SDK ships an update every 3 months, and HeatNext every 2 months. Most recently, Forsta SDK was updated on October 8, 2026 and HeatNext on October 25, 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.*