Comparison

enerchart app vs Watto

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

Head to head

Hourly Electricity Prices

Free

🔧 Utilities

No ratingsView app →

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

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

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 · 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. 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 · 2 level

enerchart app versus Watto: the parameters behind the verdict, then further details
Parameter	enerchart app	Watto
Price	Free	Free
Update frequency	Monthly — better	Every 2 months
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPad, iPod — better	iPhone
Requires iOS	15.5 — better	18.0
Further details — not scored
Size	44 MB	4 MB
Age rating	4+	4+
Developer	krumedia GmbH	Erik 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.