# cards.study vs PiSeeker

The clearest difference is in-app purchases: PiSeeker at none against cards.study's 1. cards.study's advantage is ratings volume (8 vs 1). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. cards.study sells 1 in-app purchase, starting at $5.99 per month. PiSeeker asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for cards.study against 5.0 for PiSeeker. That said, the two scores are not equally well evidenced: cards.study has 8 ratings behind it against 1, so its average is the more settled of the two.

cards.study ships an update every 4 weeks, PiSeeker fortnightly. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | cards.study | PiSeeker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (8 ratings)](https://appshunter.io/ios/app/cardsstudy-trivia-flashcards/id6737521915/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/piseeker/id6747010305/reviews) |
| Number of ratings | **8** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 43 MB | 1 MB |
| Requires iOS | **17.0** | 18.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ben Jenkins](https://appshunter.io/developer/1776903367) | [Adam Thomas Hayes](https://appshunter.io/developer/1819363637) |

## What reviewers say

### cards.study

[App page](https://appshunter.io/ios/app/cardsstudy-trivia-flashcards/id6737521915)

Master subjects like languages and trivia with a spaced-repetition flashcard system. Create your own study materials or use pre-made courses. Gain insights into your learning progress with advanced statistics.

**Highlights:** Spaced-repetition algorithm, Pre-made courses, Custom card editor, Advanced statistics, Trivia and language learning

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access | $5.99 | per month |


### PiSeeker

[App page](https://appshunter.io/ios/app/piseeker/id6747010305)

Challenge your memory and math skills with this application focused on the digits of Pi. It offers four distinct modes: voice recognition recitation, typing practice, a digit-hunting puzzle, and a simple viewing mode. Designed for math enthusiasts and students, it prioritizes a clean interface and user privacy.

**Highlights:** Voice recognition Pi recitation, Typing Pi digits practice, Range-based Pi digit puzzle, Pi digit viewing mode, Progress tracking, Accessibility features

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is cards.study free?

cards.study is free to download, with in-app purchases available.

### Is PiSeeker free?

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

### Which has better reviews, cards.study or PiSeeker?

cards.study and PiSeeker are both rated 5.0 out of 5 on the App Store, from 8 and 1 ratings respectively.

### Do cards.study or PiSeeker have ads?

Neither cards.study nor PiSeeker shows ads.

### Which is updated more often, cards.study or PiSeeker?

cards.study ships an update every 4 weeks, and PiSeeker fortnightly. Most recently, cards.study was updated on November 4, 2026 and PiSeeker on October 30, 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.*