Comparison

NuTone Knock vs MentalMind Focus with AI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

NuTone Knock

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
Read full description

Reliable home security is KNOCKing! NuTone®, the inventors of the modern doorbell, bring you the NuTone Knock™ Smart Video Doorbell Camera. NuTone Knock allows homeowners to see and speak to visitors from anywhere in the world in crystal clear 720p HD resolution on their smartphone or tablet. With integrated motion detection, night vision, and the ability to record videos or snapshots, you’ll always know when someone is at the door and have peace of mind that your home is safe and secure no matter where you are. NuTone Knock connects to your existing doorbell wiring and your home’s Wi-Fi network to stream live video and two-way audio and provide reliable, around-the-clock security. You’ll never miss a visitor or a delivery again! Features include: · Two-way audio and HD video from your door to any smartphone or tablet around the world · Weatherproof against the most extreme weather conditions · Easy installation and setup · Night vision camera allows you to see who is at your door in high definition in any low-light condition · Motion detection will alert you of any movement so you will know who is on your property, even if they don’t ring the doorbell · Choose the area you want to monitor for motion so busy streets or sidewalks don’t cause false alarms · Set the doorbell to Quiet Hours to silence the chime during nap time, family time, or movie night · The 180° camera lens gives you a view of your entire entry way

About

MentalMind Focus with AI

Features
Read full description

Master Your Focus with MentalMind. MentalMind is an intelligent Pomodoro timer that helps you build better focus habits through AI-generated insights, distraction awareness, and clear progress tracking. Whether you’re studying, working, or just trying to concentrate, MentalMind helps you do more with clarity and calm. Key Features: • Smart Pomodoro Timer – Classic 25-minute sessions + flexible settings • AI-Powered Reflections – Get actionable feedback after each session • Task Tracking – Stay organized with focus-based to-dos • Session History – Track your daily, weekly, and monthly focus progress • Distraction Logging – Notice what breaks your flow and adjust • Customizable Experience – Change durations, themes, and quiet mode MentalMind respects your privacy — all session data stays on your device unless you opt in to sync or backup features. Try the core features for free. Upgrade to MentalMind Pro to unlock AI feedback, unlimited task lists, and full history reports. Focus isn’t magic. It’s a mindset. MentalMind helps you build it. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

NuTone Knock4 screens
MentalMind Focus with AI3 screens

Verdict

The call

The clearest difference is in-app purchases: NuTone Knock at none against MentalMind Focus with AI's 2. NuTone Knock also leads on iOS requirement (10.0 vs 16.1). MentalMind Focus with AI's advantage is update cadence (every 2 days vs every 2 months). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MentalMind Focus with AI sells 2 in-app purchases, starting at $2.99 per month. NuTone Knock asks for nothing beyond the download.

UpkeepUpdate frequency

NuTone Knock ships an update every 2 months, MentalMind Focus with AI every 2 days. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
NuTone Knock versus MentalMind Focus with AI: the parameters behind the verdict, then further details
ParameterNuTone KnockMentalMind Focus with AI
PriceFreeFree
Rating2.0 (21 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings21 — better—
Update frequencyEvery 2 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPod — betteriPhone
Requires iOS10.0 — better16.1
Further details — not scored
Size36 MB7 MB
Age rating4+4+
DeveloperBroan-NuTone, LLC.Ronald Stel

In-app purchases

None

NuTone Knock

No in-app purchases

2 purchases

MentalMind Focus with AI

Subscriptions2
  • MentalMind Pro Monthly$2.991 Month
  • MentalMind Pro Yearly$22.991 Year

Questions

Is NuTone Knock free?
NuTone Knock is free to download, with no in-app purchases.
Is MentalMind Focus with AI free?
MentalMind Focus with AI is free to download, with in-app purchases available.
Do NuTone Knock or MentalMind Focus with AI have ads?
Neither NuTone Knock nor MentalMind Focus with AI shows ads.
Which is updated more often, NuTone Knock or MentalMind Focus with AI?
NuTone Knock ships an update every 2 months, and MentalMind Focus with AI every 2 days. Most recently, NuTone Knock was updated on November 3, 2026 and MentalMind Focus with AI on October 28, 2026.

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