Comparison

enerchart app vs Watto

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

Head to head
About

enerchart app

Read full description

An existing installation of enerchart is required to use this app. The enerchart system is an energy data platform for IoT and energy management. For more information, visit https://www.enerchart.com/. This app complements enerchart by mobile meter readings. It supports the person reading the meters in reminding them of readings, allocating meters and entering meter values. The app automatically synchronizes with the existing enerchart system.

About

Watto

Features
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- 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

Screenshots

enerchart app4 screens
Watto4 screens

Verdict

The call

The clearest difference is in-app purchases: enerchart app at none against Watto's 4. enerchart app also leads on update cadence (monthly vs every 2 months) and device support (3 vs 1). On price and ads there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Watto sells 4 one-off in-app purchases. enerchart app asks for nothing beyond the download.

UpkeepUpdate frequency

enerchart app ships an update monthly, Watto every 2 months. The most recent releases landed on September 14, 2026 and September 22, 2026 respectively.

Scorecard4 real differences ยท 2 level
enerchart app versus Watto: the parameters behind the verdict, then further details
Parameterenerchart appWatto
PriceFreeFree
Update frequencyMonthly โ€” betterEvery 2 months
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS15.5 โ€” better18.0
Further details โ€” not scored
Size44 MB4 MB
Age rating4+4+
Developerkrumedia GmbHErik Aigner

In-app purchases

None

enerchart app

No 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

Questions

Is enerchart app free?
enerchart app is free to download, with no in-app purchases.
Is Watto free?
Watto is free to download, with in-app purchases available.
Do enerchart app or Watto have ads?
Neither enerchart app nor Watto shows ads.
Which is updated more often, enerchart app or Watto?
enerchart app ships an update monthly, and Watto every 2 months. Most recently, enerchart app was updated on September 14, 2026 and Watto on September 22, 2026.

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