# Kooling vs PlanetSustain

The clearest difference is update cadence: PlanetSustain at every 8 days against Kooling's every 3 weeks. Kooling'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.

Kooling ships an update every 3 weeks, PlanetSustain every 8 days. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Kooling | PlanetSustain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Size | 82 MB | 189 MB |
| Requires iOS | **15.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kooling Technologies Limited](https://appshunter.io/developer/1560495343) | [Invosystems Solutions Pte Ltd](https://appshunter.io/developer/1556010049) |

## What reviewers say

### Kooling

[App page](https://appshunter.io/ios/app/kooling/id1560495341)

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

**In-app purchases:** none


### PlanetSustain

[App page](https://appshunter.io/ios/app/planetsustain/id1672527905)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kooling free?

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

### Is PlanetSustain free?

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

### Do Kooling or PlanetSustain have ads?

Neither Kooling nor PlanetSustain shows ads.

### Which is updated more often, Kooling or PlanetSustain?

Kooling ships an update every 3 weeks, and PlanetSustain every 8 days. Most recently, Kooling was updated on October 19, 2026 and PlanetSustain on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*