# GuruLango vs Math Helper Sigmaly AI

The clearest difference is in-app purchases: GuruLango at none against Math Helper Sigmaly AI's 3. GuruLango also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.6). Math Helper Sigmaly AI's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 6 months). On price there is nothing between them.

Both are free to download. Math Helper Sigmaly AI sells 3 in-app purchases, starting at $4.99 per 7 days. GuruLango asks for nothing beyond the download.

GuruLango ships an update every 6 months, Math Helper Sigmaly AI every 2 weeks. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | GuruLango | Math Helper Sigmaly AI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 109 MB | 22 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Quan Nguyen](https://appshunter.io/developer/1780506598) | [Anatoli Niculeac](https://appshunter.io/developer/1788751874) |

## What reviewers say

### GuruLango

[App page](https://appshunter.io/ios/app/gurulango-learn-korean-words/id6738763465)

Master Korean vocabulary with spaced repetition, interactive flashcards, and engaging word games. Track your progress, receive smart review reminders, and learn through real-life examples. Designed for an enjoyable and effective learning journey.

**Highlights:** Spaced repetition learning, Interactive flashcards, Word games (anagram, quiz, spelling), Real-life examples, Progress tracking, Smart review reminders, Extensive vocabulary (5,000+ words)

**Features:** macOS Compatibility

**In-app purchases:** none


### Math Helper Sigmaly AI

[App page](https://appshunter.io/ios/app/math-helper-sigmaly-ai/id6756194673)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-Day Free Trial Weekly | $4.99 | per 7 days |
| 7-Day Trial Monthly | $12.99 | per month |
| Semester Plan | $34.99 | per 6 months |


## Frequently asked questions

### Is GuruLango free?

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

### Is Math Helper Sigmaly AI free?

Math Helper Sigmaly AI is free to download, with in-app purchases available.

### Do GuruLango or Math Helper Sigmaly AI have ads?

GuruLango shows ads; Math Helper Sigmaly AI does not.

### Which is updated more often, GuruLango or Math Helper Sigmaly AI?

GuruLango ships an update every 6 months, and Math Helper Sigmaly AI every 2 weeks. Most recently, GuruLango was updated on November 4, 2026 and Math Helper Sigmaly AI 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.*