# ProblemSum vs Learn Korean

The clearest difference is review sentiment: ProblemSum at 100% against Learn Korean's 50%. ProblemSum also leads on in-app purchases (none vs 1) and update cadence (every 5 weeks vs every 14 months). Learn Korean's advantage is price (Free vs $2.99) and ratings volume (18 vs 1). On ads and device support there is nothing between them.

Learn Korean is free to download; ProblemSum costs $2.99 up front. Learn Korean sells 1 one-off in-app purchase. ProblemSum asks for nothing beyond the download.

ProblemSum holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Learn Korean has 18 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of ProblemSum's written reviews are positive against 50% of Learn Korean's.

ProblemSum ships an update every 5 weeks, Learn Korean every 14 months. The most recent releases landed on October 3, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | ProblemSum | Learn Korean |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/problemsum/id1273718042/reviews)** | [4.7 (18 ratings)](https://appshunter.io/ios/app/learn-korean-hangul-hero/id1498769225/reviews) |
| Number of ratings | 1 | **18** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 14 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 20 MB |
| Requires iOS | 18.0 | **15** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Aeterna Solutions](https://appshunter.io/developer/1273718041) | [Handtechnics](https://appshunter.io/developer/505784461) |

## What reviewers say

### ProblemSum

[App page](https://appshunter.io/ios/app/problemsum/id1273718042)

Practice math word problems aligned with the Singapore Mathematics syllabus for Primary 6 students. Get detailed solutions for each problem. The app works offline and requires no account.

**Highlights:** Random math word problem generation, Singapore Math syllabus alignment, Detailed step-by-step solutions, Offline functionality, No account required, Ad-free experience

**Features:** Vision Pro support

**In-app purchases:** none


### Learn Korean

[App page](https://appshunter.io/ios/app/learn-korean-hangul-hero/id1498769225)

Master Korean vocabulary and Hangul recognition with this interactive app. It features over 5,700 essential words from TOPIK I & II, native pronunciation, and an engaging learning system designed for all levels.

**Highlights:** Master 5,700+ TOPIK words, Learn Hangul characters, Active recall learning, Native Korean pronunciation, Engaging sound effects & graphics, Interactive learning experience

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Everything | $39.99 | one-time |


## Frequently asked questions

### Is ProblemSum free?

ProblemSum costs $2.99, with no in-app purchases.

### Is Learn Korean free?

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

### Which has better reviews, ProblemSum or Learn Korean?

ProblemSum is rated higher. ProblemSum averages 5.0 out of 5 from 1 ratings, while Learn Korean averages 4.7 from 18 ratings.

### Do ProblemSum or Learn Korean have ads?

Neither ProblemSum nor Learn Korean shows ads.

### Which is updated more often, ProblemSum or Learn Korean?

ProblemSum ships an update every 5 weeks, and Learn Korean every 14 months. Most recently, ProblemSum was updated on October 3, 2026 and Learn Korean on October 14, 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.*