# LeetCard vs SD Primer

The clearest difference is ads: SD Primer at none against LeetCard's shown. LeetCard's advantage is update cadence (every 2 days vs every 5 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. LeetCard sells 3 in-app purchases, starting at $3.99 per month and SD Primer sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

LeetCard ships an update every 2 days, SD Primer every 5 days. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | LeetCard | SD Primer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (80 ratings)](https://appshunter.io/ios/app/leetcard-coding-flashcards/id6478087443/reviews)** | — |
| Number of ratings | **80** | — |
| Positive reviews | 53.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 5 days |
| Monetization | Free with in-app purchases | — |
| Size | 124 MB | 20 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Kubicle LLC](https://appshunter.io/developer/1679797468) | [Ernesto Hilvano](https://appshunter.io/developer/1740292069) |

## What reviewers say

### LeetCard

[App page](https://appshunter.io/ios/app/leetcard-coding-flashcards/id6478087443)

Prepare for coding interviews with AI-powered flashcards and adaptive learning. Master data structures, algorithms, and coding patterns with personalized plans and intelligent hints. Track your progress with detailed analytics to identify weak areas and stay motivated.

**Highlights:** AI-powered hints, Personalized study plans, Smart flashcards, Clean organization, Personalized dashboard, Detailed analytics

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LeetCard Pro | $3.99 | per month |
| LeetCard Pro | $24.99 | per year |
| LeetCard Pro | $39.99 | one-time |


### SD Primer

[App page](https://appshunter.io/ios/app/sd-primer/id6758010557)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SDPrimer Pro | $9.99 | per month |
| SDPrimer Pro | $99.99 | per year |


## Frequently asked questions

### Is LeetCard free?

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

### Is SD Primer free?

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

### Do LeetCard or SD Primer have ads?

LeetCard shows ads; SD Primer does not.

### Which is updated more often, LeetCard or SD Primer?

LeetCard ships an update every 2 days, and SD Primer every 5 days. Most recently, LeetCard was updated on October 9, 2026 and SD Primer on October 1, 2026.

---

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