Comparison

smart vs whatwatt

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

smart

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
Read full description

smart-me puts your energy data on your iPhone and iPad. Whether it's a single-family home, an apartment building with shared solar power (ZEV/vZEV) or a business: see live how much power your solar system produces, how much of it you use yourself and what it costs. LIVE AND TRANSPARENT • Live values from all your smart-me meters and devices • Energy flow between solar system, battery, building and grid • Self-consumption and self-sufficiency rate at a glance • Consumption and costs per apartment, tariff and period – from yesterday to the last 365 days LOAD PROFILES AND HISTORY • Detailed load profiles you can zoom with two fingers • Read the values of individual periods right in the chart • Electricity, heat, hot and cold water in one app FOR OWNERS, PROPERTY MANAGERS AND TENANTS • Ideal for ZEV and vZEV: tenants see their consumption, their solar share and their costs • Clear overview of entire properties with all apartments and meters • Keep an eye on charging stations and e-mobility MADE FOR YOU • Home Screen and Lock Screen widgets with the current power • "Current power" shortcut for Siri and the Shortcuts app • Light and dark mode • Optimized for iPhone and iPad SECURE, FROM SWITZERLAND Your data is stored encrypted in a certified data center in Switzerland. smart-me is the Swiss specialist for smart energy management in buildings. To use the app you need a smart-me account and smart-me devices, such as meters, M-Bus gateways or the Pico charging station. Learn more at web.smart-me.com Customer support Help: https://doc.smart-me.com/home Email: support@smart-me.com

About

whatwatt

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
Read full description

The app that allows you to install whatwatt Go on a compatible smart meter, receive smart meter data in real time and connect your smart meter to services. Made for Switzerland.

Screenshots

smart4 screens
whatwatt4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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

Scorecard1 real difference · 9 level
smart versus whatwatt: the parameters behind the verdict, then further details
Parametersmartwhatwatt
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings—1 — better
Update frequencyMonthlyEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size6 MB53 MB
Age rating4+4+
Developersmart-me AGwhatwatt AG

Customer experience

smart

Written reviews10 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

whatwatt

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

smart

No in-app purchases

None

whatwatt

No in-app purchases

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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