# Wasserstein vs ZEFNET Charge

The clearest difference is rating: Wasserstein at 4.6 against ZEFNET Charge's 1.6. Wasserstein also leads on review sentiment (42% vs 10%) and ratings volume (981 vs 26). ZEFNET Charge's advantage is iOS requirement (11.0 vs 13.0). 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.

Wasserstein holds the better App Store score, 4.6 against 1.6. That said, the two scores are not equally well evidenced: Wasserstein has 981 ratings behind it against 26, so its average is the more settled of the two. Written reviews point the same way: 42% of Wasserstein's written reviews are positive against 10% of ZEFNET Charge's.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 22, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Wasserstein | ZEFNET Charge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (981 ratings)](https://appshunter.io/ios/app/wasserstein/id1215495377/reviews)** | [1.6 (26 ratings)](https://appshunter.io/ios/app/zefnet-charge/id1470100874/reviews) |
| Number of ratings | **981** | 26 |
| Positive reviews | **41.9% of reviews** | 10.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Free | Free |
| Size | 172 MB | 19 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [DROPCASES LIMITED](https://appshunter.io/developer/1215495376) | [ZEF Energy Inc.](https://appshunter.io/developer/1470100873) |

## What reviewers say

### Wasserstein

[App page](https://appshunter.io/ios/app/wasserstein/id1215495377)

This app acts as a central control for all smart home devices made by Wasserstein. It connects your devices, allowing you to manage them conveniently from your smartphone.

**Highlights:** Central hub for smart home devices, Connects Wasserstein devices, Manage devices from smartphone, Seamless device integration

**In-app purchases:** none

**What reviewers like**

- 🏠 Home security
- 💡 Damage averted
- 👍 Easy setup

**What reviewers complain about**

- 🚨 No notifications
- 🤯 Unreliable connectivity
- 🤷‍♀️ Poor instructions
- 🔓 Login issues
- 🗑️ Useless when not connected

**Reported bugs**

- App data loss
- Incompatible with iOS 16.1
- Sensors not triggering alarms
- Connectivity issues

**Requested features**

- Text message notifications
- Daylight savings time support


### ZEFNET Charge

[App page](https://appshunter.io/ios/app/zefnet-charge/id1470100874)

Find and use public electric vehicle charging stations. Monitor and control your home charging unit, with options to override utility program restrictions for emergency charging.

**Highlights:** Find public chargers, Start/stop charging sessions, Secure in-app payments, Monitor home charger usage, Control home charger, Override charging restrictions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Wasserstein free?

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

### Is ZEFNET Charge free?

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

### Which has better reviews, Wasserstein or ZEFNET Charge?

Wasserstein is rated higher. Wasserstein averages 4.6 out of 5 from 981 ratings, while ZEFNET Charge averages 1.6 from 26 ratings.

### Do Wasserstein or ZEFNET Charge have ads?

Neither Wasserstein nor ZEFNET Charge shows ads.

### Which is updated more often, Wasserstein or ZEFNET Charge?

Wasserstein ships an update every 4 months, and ZEFNET Charge every 4 months. Most recently, Wasserstein was updated on October 22, 2026 and ZEFNET Charge on October 20, 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.*