# NuTone Knock vs marks

The clearest difference is review sentiment: marks at 88% against NuTone Knock's 0%. marks also leads on rating (4.6 vs 2.0) and update cadence (every 2 days vs every 2 months). NuTone Knock's advantage is iOS requirement (10.0 vs 15.1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

marks holds the better App Store score, 4.6 against 2.0. Both are backed by a comparable volume of ratings — 21 and 90 respectively. Written reviews point the same way: 0% of NuTone Knock's written reviews are positive against 88% of marks's.

NuTone Knock ships an update every 2 months, marks every 2 days. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | NuTone Knock | marks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (21 ratings)](https://appshunter.io/ios/app/nutone-knock/id1269475346/reviews) | **[4.6 (90 ratings)](https://appshunter.io/ios/app/marks-infinite-campus-grades/id6761805541/reviews)** |
| Number of ratings | 21 | **90** |
| Positive reviews | 0.0% of reviews | **87.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free | Free |
| Size | 36 MB | 47 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Broan-NuTone, LLC.](https://appshunter.io/developer/1060691176) | [BENAN LIU](https://appshunter.io/developer/1891577484) |

## What reviewers say

### NuTone Knock

[App page](https://appshunter.io/ios/app/nutone-knock/id1269475346)

See and speak to visitors from anywhere in crystal clear HD. Features motion detection, night vision, and video recording for reliable home security. Never miss a visitor or delivery again.

**Highlights:** See and speak to visitors remotely, 720p HD video resolution, Integrated motion detection, Night vision, Video recording and snapshots, Two-way audio, 180° camera lens

**Features:** macOS Compatibility

**In-app purchases:** none


### marks

[App page](https://appshunter.io/ios/app/marks-infinite-campus-grades/id6761805541)

This app provides a streamlined interface for students to view Infinite Campus data, including assignments, grades, and what-if grade calculations. It prioritizes user privacy by encrypting and storing session data locally on the device.

**Highlights:** View assignments and grades, Calculate what-if grades, Faster, cleaner interface, Real-time data access, Encrypted local data storage

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

**In-app purchases:** none


## Frequently asked questions

### Is NuTone Knock free?

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

### Is marks free?

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

### Which has better reviews, NuTone Knock or marks?

marks is rated higher. NuTone Knock averages 2.0 out of 5 from 21 ratings, while marks averages 4.6 from 90 ratings.

### Do NuTone Knock or marks have ads?

Neither NuTone Knock nor marks shows ads.

### Which is updated more often, NuTone Knock or marks?

NuTone Knock ships an update every 2 months, and marks every 2 days. Most recently, NuTone Knock was updated on October 21, 2026 and marks on October 24, 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.*