Comparison

MindMirror vs Knock Reminder

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

Head to head
About

MindMirror

Features
Read full description

MindMirror lets you turn any file into searchable notes, ask questions in natural language and get instant answers. Traditional note apps trap you in endless folders and tags. You spend more time filing than thinking. MindMirror breaks this cycle with intelligent search that understands what you mean, not just what you type. Why MindMirror โ€ข Drop files โ†’ instant notes. Turn PDFs, docs, and more into clean, searchable notes. โ€ข Smart Search & Q&A. Find anything with natural-language queries and get concise answers. โ€ข Writing Assistant. Summarize, expand, or rephrase text right in the editor. โ€ข Cloud sync. Your notes stay in sync across devices. Built for students & pros From class notes to research and meeting docs, write less, find more. Your notes contain valuable knowledge, but only if you use them. While other apps add more features, we subtract friction. No dashboards to configure. No workflows to learn. No organizational systems to maintain. Just write and trust that you'll find it when you need it. Terms of Use: https://mindmirror.app/terms Privacy Policy: https://mindmirror.app/privacy

About

Knock Reminder

Features
Read full description

In a meeting, you think "let me send that in 15 minutes" โ€” but you don't have time for a multi-tap setup, so you set nothing and actually forget. The stock Reminders app takes four steps: open โ†’ tap + โ†’ pick a list โ†’ enter date and time. It's quietly long. And the notification gets buried with everything else โ€” next thing you know, an hour's gone by. Knock Reminder exists to kill both of those: the hassle of setting a reminder, and the pain of missing it. For you if: You tend to say "later" and never actually set anything because the standard app is too much friction. Or you've been burned by missing a notification before. What it does: Pick from your own 16 custom presets and set a reminder in 3 taps. Repeats cover daily, weekly, monthly, yearly โ€” weekly lets you toggle individual weekdays, so "just Monday, Wednesday, Friday" is one setting. Tap the notification and it switches instantly to a full-screen alert in your theme color โ€” big clock, big name. No more losing it in the banner pile. Done, +15 min, or +1 hour, right there. We cut the seconds it takes to set one.

Screenshots

MindMirror4 screens
Knock Reminder4 screens

Verdict

The call

The clearest difference is update cadence: MindMirror at every 3 weeks against Knock Reminder's every 2 months. Knock Reminder's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. MindMirror sells 2 in-app purchases, starting at $4.99 per month and Knock Reminder sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

MindMirror ships an update every 3 weeks, Knock Reminder every 2 months. The most recent releases landed on October 15, 2026 and October 20, 2026 respectively.

Scorecard2 real differences ยท 4 level
MindMirror versus Knock Reminder: the parameters behind the verdict, then further details
ParameterMindMirrorKnock Reminder
PriceFreeFree
Update frequencyEvery 3 weeks โ€” betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS26.017.0 โ€” better
Further details โ€” not scored
Size31 MB34 MB
Age rating4+4+
DeveloperWolfwalkers LabsSeki Hiroyasu

In-app purchases

2 purchases

MindMirror

Subscriptions2
  • MindMirror Pro$4.991 Month
  • MindMirror Pro$47.991 Year
1 purchases

Knock Reminder

One-time1
  • Knock Reminder Pro$2.99

Questions

Is MindMirror free?
MindMirror is free to download, with in-app purchases available.
Is Knock Reminder free?
Knock Reminder is free to download, with in-app purchases available.
Do MindMirror or Knock Reminder have ads?
Neither MindMirror nor Knock Reminder shows ads.
Which is updated more often, MindMirror or Knock Reminder?
MindMirror ships an update every 3 weeks, and Knock Reminder every 2 months. Most recently, MindMirror was updated on October 15, 2026 and Knock Reminder on October 20, 2026.

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