# Smart MasterKey vs Enefit Charge

The clearest difference is update cadence: Smart MasterKey at every 3 weeks against Enefit Charge's every 2 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.

Smart MasterKey ships an update every 3 weeks, Enefit Charge every 2 months. The most recent releases landed on September 16, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Smart MasterKey | Enefit Charge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 109 MB | 32 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Smart Masterkey OU](https://appshunter.io/developer/1548442774) | [Eesti Energia](https://appshunter.io/developer/898742565) |

## What reviewers say

### Smart MasterKey

[App page](https://appshunter.io/ios/app/smart-masterkey/id1599720530)

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

**In-app purchases:** none


### Enefit Charge

[App page](https://appshunter.io/ios/app/enefit-charge/id6748643712)

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart MasterKey free?

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

### Is Enefit Charge free?

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

### Do Smart MasterKey or Enefit Charge have ads?

Neither Smart MasterKey nor Enefit Charge shows ads.

### Which is updated more often, Smart MasterKey or Enefit Charge?

Smart MasterKey ships an update every 3 weeks, and Enefit Charge every 2 months. Most recently, Smart MasterKey was updated on September 16, 2026 and Enefit Charge on September 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.*