# Block Logic vs knotecards

The clearest difference is price: Block Logic at Free against knotecards's $3.99. Block Logic also leads on ratings volume (57 vs 3) and iOS requirement (15.1 vs 17.6). knotecards's advantage is ads (none vs shown) and update cadence (every 6 weeks vs every 19 months). On in-app purchases and device support there is nothing between them.

Block Logic is free to download; knotecards costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

knotecards holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Block Logic has 57 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 86% of Block Logic's written reviews are positive against 100% of knotecards's.

Block Logic ships an update every 19 months, knotecards every 6 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Block Logic | knotecards |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | [4.4 (57 ratings)](https://appshunter.io/ios/app/block-logic-brain-training-iq/id912125030/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/knotecards/id6748163448/reviews)** |
| Number of ratings | **57** | 3 |
| Positive reviews | 85.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 19 months | **Every 6 weeks** |
| Monetization | **Ad-supported** | Paid |
| Size | 26 MB | 1 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Javier Campana](https://appshunter.io/developer/788478773) | [altymytry](https://appshunter.io/developer/1824557021) |

## What reviewers say

### Block Logic

[App page](https://appshunter.io/ios/app/block-logic-brain-training-iq/id912125030)

This app offers daily brain training exercises to enhance memory and concentration. It features 20 progressive difficulty levels to challenge your cognitive skills and improve mental agility through short, relaxing gameplay sessions.

**Highlights:** Memory and concentration improvement, Daily brain training sessions, 20 progressive difficulty levels, Track progress and beat records, Simple rules, challenging patterns

**Features:** macOS Compatibility

**In-app purchases:** none


### knotecards

[App page](https://appshunter.io/ios/app/knotecards/id6748163448)

Prepare for your Private Pilot Checkride with flashcards created by Certified Flight Instructors. This study tool covers ACS standards and includes sources for accurate information. Organize cards by knowledge level for efficient learning.

**Highlights:** Flashcards designed by CFIs, Covers ACS Standards, Includes sources for accuracy, Systematic and weighted card viewing, Covers 141 curriculum areas

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Block Logic free?

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

### Is knotecards free?

knotecards costs $3.99, with no in-app purchases.

### Which has better reviews, Block Logic or knotecards?

knotecards is rated higher. Block Logic averages 4.4 out of 5 from 57 ratings, while knotecards averages 4.7 from 3 ratings.

### Do Block Logic or knotecards have ads?

Block Logic shows ads; knotecards does not.

### Which is updated more often, Block Logic or knotecards?

Block Logic ships an update every 19 months, and knotecards every 6 weeks. Most recently, Block Logic was updated on October 24, 2026 and knotecards 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.*