# CSE Harsco vs Survoltage

The clearest difference is update cadence: Survoltage at monthly against CSE Harsco's every 36 months. 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.

CSE Harsco ships an update every 36 months, Survoltage monthly. The most recent releases landed on September 26, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | CSE Harsco | Survoltage |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/survoltage/id6443993237/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Monthly** |
| Monetization | — | Free |
| Size | 16 MB | 41 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SARL WENGEL](https://appshunter.io/developer/1521758264) | [Survoltage](https://appshunter.io/developer/1651266482) |

## What reviewers say

### CSE Harsco

[App page](https://appshunter.io/ios/app/cse-harsco/id1641893059)

**Features:** macOS Compatibility

**In-app purchases:** none


### Survoltage

[App page](https://appshunter.io/ios/app/survoltage/id6443993237)

This app helps households reduce electricity bills and carbon footprints by optimizing energy consumption. It allows users to track usage, participate in challenges to earn rewards, and understand the French electrical grid's status. Connect smart devices for automatic participation.

**Highlights:** Track detailed electricity consumption, Participate in savings challenges, Earn EWATT points convertible to Euros, Connect smart home devices, Receive grid tension notifications, Understand French electrical grid status

**In-app purchases:** none


## Frequently asked questions

### Is CSE Harsco free?

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

### Is Survoltage free?

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

### Do CSE Harsco or Survoltage have ads?

Neither CSE Harsco nor Survoltage shows ads.

### Which is updated more often, CSE Harsco or Survoltage?

CSE Harsco ships an update every 36 months, and Survoltage monthly. Most recently, CSE Harsco was updated on September 26, 2026 and Survoltage on October 21, 2026.

---

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