# LeetCards vs Krayon Box

The clearest difference is in-app purchases: Krayon Box at none against LeetCards's 3. LeetCards's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (13.4 vs 15.5). On price, ads and device support there is nothing between them.

Both are free to download. LeetCards sells 3 in-app purchases, starting at $9.00 per month. Krayon Box asks for nothing beyond the download.

LeetCards ships an update every 3 weeks, Krayon Box every 2 months. The most recent releases landed on October 11, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | LeetCards | Krayon Box |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (4 ratings)](https://appshunter.io/ios/app/leetcards/id6502571848/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 116 MB |
| Requires iOS | **13.4** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kittichote Kamalapirat](https://appshunter.io/developer/1643959840) | [Alok .](https://appshunter.io/developer/1462951236) |

## What reviewers say

### LeetCards

[App page](https://appshunter.io/ios/app/leetcards/id6502571848)

Master coding interview questions with spaced repetition and curated problem sets. Track your progress, take custom notes, and compete on leaderboards to optimize your learning and land your dream job.

**Highlights:** Spaced repetition for DSA concepts, Curated problem sets (Grind 75, Blind 75), Progress tracking (streaks, XP), Custom notes for problems, Leaderboard for competition

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LeetCards | $9.00 | per month |
| LeetCards | $59.00 | per year |
| LeetCards | $89.00 | one-time |


### Krayon Box

[App page](https://appshunter.io/ios/app/krayon-box/id6747641854)

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

**In-app purchases:** none


## Frequently asked questions

### Is LeetCards free?

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

### Is Krayon Box free?

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

### Do LeetCards or Krayon Box have ads?

Neither LeetCards nor Krayon Box shows ads.

### Which is updated more often, LeetCards or Krayon Box?

LeetCards ships an update every 3 weeks, and Krayon Box every 2 months. Most recently, LeetCards was updated on October 11, 2026 and Krayon Box on October 3, 2026.

---

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