# Electric Field Explorer vs CogniCards

The clearest difference is price: CogniCards at Free against Electric Field Explorer's $1.99. CogniCards also leads on update cadence (every 10 days vs every 2 months) and iOS requirement (17.0 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

CogniCards is free to download; Electric Field Explorer costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electric Field Explorer ships an update every 2 months, CogniCards every 10 days. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Electric Field Explorer | CogniCards |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cognicards-study-flashcards/id6788159781/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | — | Free |
| Size | 4 MB | 12 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Holger Wiesing](https://appshunter.io/developer/828032203) | [Jan Paczkowski](https://appshunter.io/developer/6783297011) |

## What reviewers say

### Electric Field Explorer

[App page](https://appshunter.io/ios/app/electric-field-explorer/id6757281793)

**Features:** macOS Compatibility

**In-app purchases:** none


### CogniCards

[App page](https://appshunter.io/ios/app/cognicards-study-flashcards/id6788159781)

This app uses spaced repetition and active recall to help you learn and remember information effectively. Organize your study material into decks, practice with quizzes, and track your progress with detailed statistics. It's designed for efficient learning across various subjects.

**Highlights:** Spaced repetition algorithm (FSRS), Active recall testing, Rich card formatting (Markdown, images, LaTeX), Deck and folder organization, Quiz and matching game practice modes, Import/export flashcard decks, Progress tracking and statistics

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Electric Field Explorer free?

Electric Field Explorer costs $1.99, with no in-app purchases.

### Is CogniCards free?

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

### Do Electric Field Explorer or CogniCards have ads?

Neither Electric Field Explorer nor CogniCards shows ads.

### Which is updated more often, Electric Field Explorer or CogniCards?

Electric Field Explorer ships an update every 2 months, and CogniCards every 10 days. Most recently, Electric Field Explorer was updated on October 6, 2026 and CogniCards on October 4, 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.*