MARSTEK vs Enneagram
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MARSTEK
Monitor your solar energy system in real-time. Optimize for energy independence, outage protection, or savings by setting your preferences. Control your system remotely and receive instant alerts.
- Real-time solar energy monitoring
- Customizable optimization settings
- Remote system control
- Instant alerts
- Energy independence focus
- Outage protection settings
- Savings optimization
Read full descriptionHide full description
With the Marstek app, you can monitor solar energy in real-time. Set your preferences to optimize for energy independence, outage protection, or savings. Control your system from anywhere with remote access and instant alerts.
Enneagram
Read full descriptionHide full description
The app Enneagram test E.P.I. (Enneagram Personality Inventory, or short: EPI-Test) is a Personality Test based on the Enneagram. The app provides the ability to perform the E.P.I. test on the smartphone or tablet for determining the enneagram type. Which type do you belong to? Are you a Reformer, an Individualist or a Performer? Or a Helper, a Challenger or a Mediator ...? The Enneagram distinguishes between 9 different basic types. The app offers the option of taking a comprehensive test to determine your enneagram type on iOS devices (smartphone or tablet). Functions/features: • Enneagram test with 109 test items • No previous knowledge required • Easy determination of own Enneagram type • Including enneagram type descriptions • Save any number of test results • Language can be switched between english and german • No in-app advertising
Screenshots
Verdict
The clearest difference is price: MARSTEK at Free against Enneagram's $2.99. MARSTEK also leads on update cadence (every 2 weeks vs every 11 months) and device support. Enneagram's advantage is iOS requirement (12.0 vs 15.5). On in-app purchases 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
MARSTEK is free to download; Enneagram costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MARSTEK ships an update every 2 weeks, Enneagram every 11 months. The most recent releases landed on October 14, 2026 and September 30, 2026 respectively.
| Parameter | MARSTEK | Enneagram |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.5 (11 ratings) — better | — |
| Positive reviews | 72.0% of reviews | — |
| Number of ratings | 11 — better | — |
| Update frequency | Every 2 weeks — better | Every 11 months |
| Ads | No | — |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | — |
| Requires iOS | 15.5 | 12.0 — better |
| Further details — not scored | ||
| Size | 210 MB | 55 MB |
| Age rating | 12+ | 12+ |
| Developer | Hamedata Technology Co., Limited | Enneagramm Software |
In-app purchases
MARSTEK
No in-app purchases
Enneagram
No in-app purchases
