Comparison

My E3/DC vs OT Checker

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

Head to head

My E3/DC

The official E3/DC app

Industrial IP & Port Analysis

Free

🔧 Utilities

No ratingsView app →

About

My E3/DC

Read full description

All the functions of your E3/DC system at a glance: With the E3/DC APP, you can track the performance values of your system in real time, retrieve statistics and documents, make personalized settings such as weather forecast or charging priorities of your wallbox, and control your system remotely.

About

OT Checker

Features

Read full description

OT Checker helps technicians inspect user-specified local IP addresses and private network ranges. Check common OT and industrial TCP services, identify active hosts, select ports, save targets and project profiles, compare scans, add device notes, and export compact reports.\n\nScans start only when requested and are intended for networks you own or maintain. Device names are shown when available. Premium unlocks custom port sets, project profiles, comparisons, notes, and export functions.

Screenshots

My E3/DC4 screens

OT Checker4 screens

Verdict

The call

The clearest difference is in-app purchases: My E3/DC at none against OT Checker's 1. OT Checker's advantage is update cadence (every 4 days 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. OT Checker sells 1 one-off in-app purchase. My E3/DC asks for nothing beyond the download.

UpkeepUpdate frequency

My E3/DC ships an update every 2 months, OT Checker every 4 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 4 level

My E3/DC versus OT Checker: the parameters behind the verdict, then further details
Parameter	My E3/DC	OT Checker
Price	Free	Free
Update frequency	Every 2 months	Every 4 days — better
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPad, iPod — better	iPhone, iPod
Requires iOS	15.1	15.0 — better
Further details — not scored
Size	27 MB	28 MB
Age rating	4+	4+
Developer	HagerEnergy GmbH	Dominik Gausmann

In-app purchases

None

My E3/DC

No in-app purchases

1 purchases

OT Checker

One-time1

OT Port Checker Premium$3.99

Questions

Is My E3/DC free?

My E3/DC is free to download, with no in-app purchases.

Is OT Checker free?

OT Checker is free to download, with in-app purchases available.

Do My E3/DC or OT Checker have ads?

Neither My E3/DC nor OT Checker shows ads.

Which is updated more often, My E3/DC or OT Checker?

My E3/DC ships an update every 2 months, and OT Checker every 4 days. Most recently, My E3/DC was updated on November 3, 2026 and OT Checker on October 31, 2026.