# MARSTEK vs Nook

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.

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.

## The numbers

| Metric | MARSTEK | Nook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (16 ratings)](https://appshunter.io/ios/app/marstek/id6459365638/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 35.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Monetization | Free | — |
| Size | 214 MB | 47 MB |
| Requires iOS | 15.5 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Hamedata Technology Co., Limited](https://appshunter.io/developer/589308586) | [Anton Varvarynets](https://appshunter.io/developer/1892330678) |

## What reviewers say

### MARSTEK

[App page](https://appshunter.io/ios/app/marstek/id6459365638)

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.

**Highlights:** Real-time solar energy monitoring, Customizable optimization preferences, Remote system control, Instant alerts, Energy independence, outage protection, and savings modes

**Features:** macOS Compatibility

**In-app purchases:** none


### Nook

[App page](https://appshunter.io/ios/app/nook-daily-artifact/id6761990598)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nook Premium | $4.99 | per month |


## Frequently asked questions

### Is MARSTEK free?

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

### Is Nook free?

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

### Do MARSTEK or Nook have ads?

Neither MARSTEK nor Nook shows ads.

### Which is updated more often, MARSTEK or Nook?

MARSTEK ships an update every 2 weeks, and Nook every 8 days. Most recently, MARSTEK was updated on November 7, 2026 and Nook on October 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*