MARSTEK vs Nook
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 with customizable preferences. Control your system remotely and receive instant alerts.
- Real-time solar energy monitoring
- Customizable optimization preferences
- Remote system control
- Instant alerts
- Energy independence, outage protection, and savings modes
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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.
Nook
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Every day, one artifact awaits you. A painting from a Renaissance master. A photograph from a forgotten century. A thought that has survived thousands of years. Nook delivers one carefully chosen artifact each day — sealed until you're ready to reveal it through a calming interaction: breathe, scratch, unfold, trace. One of seven quiet rituals. Each day different. Not a feed. Not a scroll. Just one thing, waiting to be revealed. **How it works** Each day at 6 AM, a new artifact appears — sealed. To see it, you complete a short, calming interaction: breathe through an animation, scratch the surface away, watch rain dissolve the veil, or follow a spiral. The reveal is part of the experience. Once revealed, the artifact is yours for the day. Read about it. Sit with it. Come back to it. **Why Nook?** We built Nook as an antidote to endless content. One artifact. Full attention. No algorithm deciding what you see next. The artworks come from some of the world's greatest public collections. The thoughts come from thinkers who understood slowness: Seneca, Marcus Aurelius, Thoreau. **Nook Premium** Unlock access to 30 days of past artifacts and save your favorites to revisit anytime. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: MARSTEK at none against Nook's 1. On price, update cadence, ads 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. Nook sells 1 in-app purchase, starting at $4.99 per month. MARSTEK asks for nothing beyond the download.
MARSTEK ships an update every 2 weeks, Nook every 8 days. The most recent releases landed on November 7, 2026 and October 28, 2026 respectively.
| Parameter | MARSTEK | Nook |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (16 ratings) — better | — |
| Positive reviews | 35.5% of reviews | — |
| Number of ratings | 16 — better | — |
| Update frequency | Every 2 weeks | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.5 | 15.1 — better |
| Further details — not scored | ||
| Size | 214 MB | 47 MB |
| Age rating | 12+ | 4+ |
| Developer | Hamedata Technology Co., Limited | Anton Varvarynets |
In-app purchases
MARSTEK
No in-app purchases
Nook
- Nook Premium$4.991 Month









