# ESM Partner vs Zappy US

The clearest difference is rating: ESM Partner at 5.0 against Zappy US's 4.6. Zappy US's advantage is ratings volume (10 vs 2) and iOS requirement (13.0 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

ESM Partner holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Zappy US has 10 ratings behind it against 2, so its average is the more settled of the two.

ESM Partner ships an update every 3 months, Zappy US every 2 months. The most recent releases landed on October 11, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | ESM Partner | Zappy US |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/esm-partner/id1506387575/reviews)** | [4.6 (10 ratings)](https://appshunter.io/ios/app/zappy-us/id6472009480/reviews) |
| Number of ratings | 2 | **10** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 25 MB | 120 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Ecosteamobile LLC](https://appshunter.io/developer/1506038224) | [Needzappy USA Inc.](https://appshunter.io/developer/1716467753) |

## What reviewers say

### ESM Partner

[App page](https://appshunter.io/ios/app/esm-partner/id1506387575)

Book convenient, eco-friendly mobile car wash services directly from your phone. Schedule cleaning at your home or work using advanced steam technology that eliminates bacteria and grime without harsh chemicals.

**Highlights:** Mobile steam car cleaning, On-demand service booking, Eco-friendly water usage, Chemical-free cleaning, Interior disinfection, Additional detailing services

**Features:** macOS Compatibility

**In-app purchases:** none


### Zappy US

[App page](https://appshunter.io/ios/app/zappy-us/id6472009480)

Rent a portable power bank to keep your devices charged while you're out and about. Never worry about a dead battery again and enjoy your day without interruption.

**Highlights:** Rent portable power banks, Charge devices on the go, Shared power bank network, Enjoy uninterrupted day

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

**In-app purchases:** none


## Frequently asked questions

### Is ESM Partner free?

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

### Is Zappy US free?

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

### Which has better reviews, ESM Partner or Zappy US?

ESM Partner is rated higher. ESM Partner averages 5.0 out of 5 from 2 ratings, while Zappy US averages 4.6 from 10 ratings.

### Do ESM Partner or Zappy US have ads?

Neither ESM Partner nor Zappy US shows ads.

### Which is updated more often, ESM Partner or Zappy US?

ESM Partner ships an update every 3 months, and Zappy US every 2 months. Most recently, ESM Partner was updated on October 11, 2026 and Zappy US on September 22, 2026.

---

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