Comparison

Ontech SMS vs Ferroamp

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

Head to head

Your Ferroamp, pocket sized

Free

🔧 Utilities

No ratingsView app →

About

Ontech SMS

Read full description

This is the official Ontech Control application for Iphone. It makes it simple to remotely control your Ontech GSM Unit. Just tap on the buttons and the app will automatically create an SMS ready to send. The app uses SMS for communication with the GSM unit and the SMS cost will be charged as normal.

About

Ferroamp

Features

Read full description

Introducing the app for your Ferroamp System. Access real-time statistics directly from your Ferroamp System, providing a comprehensive overview of your electricity consumption, production, and electricity bought or sold. See how your energy usage has evolved over time with intuitive graphs. Simply log in with your Ferroamp account to get started. This marks our inaugural release, with plans for ongoing enhancements and additional features. For a deeper understanding of your facility's electricity flows and the ability to adjust settings within your Ferroamp System, visit Ferroamp EnergyCloud at ferroamp.com.

Screenshots

Ontech SMS4 screens

Ferroamp4 screens

Verdict

The call

The clearest difference is update cadence: Ferroamp at every 9 days against Ontech SMS's every 9 months. Ontech SMS's advantage is iOS requirement (8.1 vs 16.4). On price, ads, in-app purchases and device support 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

Ontech SMS ships an update every 9 months, Ferroamp every 9 days. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 4 level

Ontech SMS versus Ferroamp: the parameters behind the verdict, then further details
Parameter	Ontech SMS	Ferroamp
Price	Free	Free
Update frequency	Every 9 months	Every 9 days — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod — better	iPhone
Requires iOS	8.1 — better	16.4
Further details — not scored
Size	16 MB	75 MB
Age rating	4+	4+
Developer	Onvako AB	Ferroamp AB

In-app purchases

None

Ontech SMS

No in-app purchases

None

Ferroamp

No in-app purchases

Questions

Is Ontech SMS free?

Ontech SMS is free to download, with no in-app purchases.

Is Ferroamp free?

Ferroamp is free to download, with no in-app purchases.

Do Ontech SMS or Ferroamp have ads?

Neither Ontech SMS nor Ferroamp shows ads.

Which is updated more often, Ontech SMS or Ferroamp?

Ontech SMS ships an update every 9 months, and Ferroamp every 9 days. Most recently, Ontech SMS was updated on October 4, 2026 and Ferroamp on October 7, 2026.