tec2SKILL Smart Maintenance vs HEar Studie
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
tec2SKILL Smart Maintenance
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Die Lernanwendung tec2SKILL® Smart Maintenance ist ein digitaler Assistent zur didaktischen Unterstützung im Bereich der CPS-i40 Stationen. Es werden ausgewählte Technologien von der ETS DIDACTIC GMBH unterstützt. Diese Lernanwendungen unterstützten Lernziele in folgenden Ausbildungsberufen: Industriemechaniker/in Zerspanungsmechaniker/in Anlagenmechaniker/in Werkzeugmechaniker/in Feinwerkmechaniker/in Konstruktionsmechaniker/in Metallbauer/in Mechatroniker/in Elektroniker/in für Automatisierungstechnik Elektroniker/in für Betriebstechnik KFZ Mechatroniker/in Techniker/in für Maschinenbau Techniker/in für Elektrotechnik
HEar Studie
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We are researchers from the Karlsruhe Institute of Technology. This app will be used for collecting data to study the relationship between headphone usage, personality and few health metrics. We ask the user to answer some survey questions on general demographics, headphones usage and personality. Finally, we request the users to share their audio exposure metrics and few other health variables like HRV, blood pressure and exercise times. This data is collected completely anonymous. All the measures have been taken to store it securely and will be used only for research.
Screenshots
Verdict
The clearest difference is update cadence: HEar Studie at every 4 days against tec2SKILL Smart Maintenance's every 8 months. tec2SKILL Smart Maintenance's advantage is iOS requirement (15.0 vs 17.6). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
tec2SKILL Smart Maintenance ships an update every 8 months, HEar Studie every 4 days. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.
| Parameter | tec2SKILL Smart Maintenance | HEar Studie |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 524 MB | 11 MB |
| Age rating | 17+ | 17+ |
| Developer | ETS DIDACTIC GMBH | Karlsruher Institut fuer Technologie (KA) |
In-app purchases
tec2SKILL Smart Maintenance
No in-app purchases
HEar Studie
No in-app purchases
Questions
Is tec2SKILL Smart Maintenance free?
Is HEar Studie free?
Do tec2SKILL Smart Maintenance or HEar Studie have ads?
Which is updated more often, tec2SKILL Smart Maintenance or HEar Studie?
Other comparisons
