Comparison

Watto vs Smongle

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

Head to head
About

Watto

Features
Read full description

- Hourly prices for EPEX SPOT AT and DE - Shows you the best times to charge - Calculates the real price based on your fee structure - Alerts you when the price drops below a set limit - See historical data like average price per week and best weekday

About

Smongle

Features
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Smongle® – The Plug & Play Energy System from Austria Smongle® combines real-time energy data, intelligent device control, smart home functionality and energy communities in a single platform. Monitor your electricity consumption, feed-in and energy flows at any time and expand your system with the growing Smongle® Ecosystem. From energy monitoring and automation to intelligent energy management, Smongle® makes complex energy technology simple. Smongle® offers: • Live energy data directly from your existing smart meter • Real-time monitoring of consumption, feed-in and power • Cloud-based Energy Management System (EMS) from Austria • Centralized control and configuration of all Smongle® devices • Plug & Play setup of new devices in just a few steps • Full transparency of energy consumption and feed-in within energy communities • Overview of available surplus energy • Automatic synchronization and intelligent cloud services • No account required – simply log in using your Smongle® serial number and GUEK provided by your grid operator • Continuously expanding Smongle® Ecosystem for intelligent home energy management With just a few steps, Smongle® becomes a powerful energy management system for homes, businesses and energy communities. One System. One App. Everything Connected. Plug & Play for Everyone. New: Smongle® and expansion devices will soon be available independently of energy community memberships. Devices can be purchased through the official online shop, including prepaid cloud services. Note: An internet connection is required for operation. If community data is not visible, please contact your administrator for activation. The more active Smongle® devices are connected within an energy community, the more accurate the shared energy data becomes.

Screenshots

Watto4 screens
Smongle4 screens

Verdict

The call

The clearest difference is in-app purchases: Smongle at none against Watto's 4. Smongle also leads on update cadence (fortnightly vs every 2 months). On price, ads, device support and iOS requirement 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. Watto sells 4 one-off in-app purchases. Smongle asks for nothing beyond the download.

UpkeepUpdate frequency

Watto ships an update every 2 months, Smongle fortnightly. The most recent releases landed on October 25, 2026 and October 17, 2026 respectively.

Scorecard2 real differences · 4 level
Watto versus Smongle: the parameters behind the verdict, then further details
ParameterWattoSmongle
PriceFreeFree
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPad — better
Requires iOS18.017.0 — better
Further details — not scored
Size4 MB2 MB
Age rating4+4+
DeveloperErik Aignermechsat e.U.

In-app purchases

4 purchases

Watto

One-time4
  • Small Tip$0.99
  • Medium Tip$2.99
  • Large Tip$3.99
Show 1 more
  • Extra Large Tip$8.99
None

Smongle

No in-app purchases

Questions

Is Watto free?
Watto is free to download, with in-app purchases available.
Is Smongle free?
Smongle is free to download, with no in-app purchases.
Do Watto or Smongle have ads?
Neither Watto nor Smongle shows ads.
Which is updated more often, Watto or Smongle?
Watto ships an update every 2 months, and Smongle fortnightly. Most recently, Watto was updated on October 25, 2026 and Smongle on October 17, 2026.

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