# Periodic Table Memorization vs Kartei

The clearest difference is ads: Kartei at none against Periodic Table Memorization's shown. Kartei also leads on update cadence (every 2 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Periodic Table Memorization sells 1 one-off in-app purchase and Kartei sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Periodic Table Memorization ships an update every 3 weeks, Kartei every 2 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Periodic Table Memorization | Kartei |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/periodic-table-memorization/id6776222961/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 12 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [YU KORIKI](https://appshunter.io/developer/6776222963) | [Marc Hammerschmidt](https://appshunter.io/developer/1838149940) |

## What reviewers say

### Periodic Table Memorization

[App page](https://appshunter.io/ios/app/periodic-table-memorization/id6776222961)

Master element symbols and atomic numbers with interactive study modes. Build habits with daily streaks and reminders, track progress with charts, and prepare for chemistry exams. Works offline and offers a free trial.

**Highlights:** Four study modes: flashcards, quiz, fill-in-the-blank, puzzle, Daily streaks and reminders, Progress tracking charts, Offline functionality, Exam preparation for chemistry, Memorize element symbols and atomic numbers

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium lifetime | $1.99 | one-time |


### Kartei

[App page](https://appshunter.io/ios/app/kartei-study-flashcards/id6819690804)

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kartei Pro Monthly | $3.99 | per month |
| Kartei Pro Yearly | $17.99 | per year |
| Kartei Pro Lifetime | $44.99 | one-time |


## Frequently asked questions

### Is Periodic Table Memorization free?

Periodic Table Memorization is free to download, with in-app purchases available.

### Is Kartei free?

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

### Do Periodic Table Memorization or Kartei have ads?

Periodic Table Memorization shows ads; Kartei does not.

### Which is updated more often, Periodic Table Memorization or Kartei?

Periodic Table Memorization ships an update every 3 weeks, and Kartei every 2 days. Most recently, Periodic Table Memorization was updated on October 31, 2026 and Kartei on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*