# Greenvolt vs Warm U

The clearest difference is update cadence: Warm U at weekly against Greenvolt's every 5 weeks. Warm U also leads on iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

Greenvolt ships an update every 5 weeks, Warm U weekly. The most recent releases landed on September 22, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Greenvolt | Warm U |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Size | 34 MB | 19 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Greenvolt](https://appshunter.io/developer/1679783880) | [海洋 刘](https://appshunter.io/developer/1736870190) |

## What reviewers say

### Greenvolt

[App page](https://appshunter.io/ios/app/greenvolt/id6449967954)

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

**In-app purchases:** none


### Warm U

[App page](https://appshunter.io/ios/app/warm-u/id6504526300)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Greenvolt free?

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

### Is Warm U free?

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

### Do Greenvolt or Warm U have ads?

Neither Greenvolt nor Warm U shows ads.

### Which is updated more often, Greenvolt or Warm U?

Greenvolt ships an update every 5 weeks, and Warm U weekly. Most recently, Greenvolt was updated on September 22, 2026 and Warm U on September 10, 2026.

---

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