# smart vs whatwatt

The clearest difference is review sentiment: whatwatt at 100% against smart's 50%. 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.

smart ships an update monthly, whatwatt every 2 weeks. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | smart | whatwatt |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/whatwatt/id6740263482/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 6 MB | 53 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [smart-me AG](https://appshunter.io/developer/929146951) | [whatwatt AG](https://appshunter.io/developer/1789292734) |

## What reviewers say

### smart

[App page](https://appshunter.io/ios/app/smart-me/id929146952)

Monitor and control your home's energy flow in real-time. View reports, optimize solar energy usage with smart actions, and track historical consumption. MID-certified meters allow for billing in prosumer communities.

**Highlights:** Real-time energy flow monitoring, Historical energy use reports, Solar energy optimization tools, Smart If/Then action setup, Prosumer community billing, MID-certified metering

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

**In-app purchases:** none


### whatwatt

[App page](https://appshunter.io/ios/app/whatwatt/id6740263482)

This utility app is preparing for future enhancements. Developers are working on new functionalities that will be revealed soon.

**Highlights:** Future feature groundwork, Upcoming enhancements, Developer updates

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

**In-app purchases:** none


## Frequently asked questions

### Is smart free?

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

### Is whatwatt free?

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

### Do smart or whatwatt have ads?

Neither smart nor whatwatt shows ads.

### Which is updated more often, smart or whatwatt?

smart ships an update monthly, and whatwatt every 2 weeks. Most recently, smart was updated on November 1, 2026 and whatwatt on November 4, 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.*