# Interview Master vs Constella Draw

The clearest difference is in-app purchases: Constella Draw at none against Interview Master's 1. Interview Master's advantage is iOS requirement (12.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Interview Master sells 1 in-app purchase, starting at $3.99 per month. Constella Draw asks for nothing beyond the download.

Interview Master ships an update fortnightly, Constella Draw every 9 days. The most recent releases landed on September 16, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Interview Master | Constella Draw |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (8 ratings)](https://appshunter.io/ios/app/interview-master-data-science/id6472814256/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 36 MB | 119 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wowso Inc.](https://appshunter.io/developer/1385658786) | [Vanny Maltez](https://appshunter.io/developer/1896276990) |

## What reviewers say

### Interview Master

[App page](https://appshunter.io/ios/app/interview-master-data-science/id6472814256)

Practice data science interviews with AI-powered simulations and daily quizzes. Receive instant feedback on your answers and track your progress to build confidence and deepen your understanding of complex topics.

**Highlights:** Real-time AI interview simulations, AI-evaluated daily quizzes, Instant feedback on answers, Progress tracking, Detailed question explanations, Community sharing features

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IM: Data Science | $3.99 | per month |


### Constella Draw

[App page](https://appshunter.io/ios/app/constella-draw/id6766326670)

**In-app purchases:** none


## Frequently asked questions

### Is Interview Master free?

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

### Is Constella Draw free?

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

### Do Interview Master or Constella Draw have ads?

Neither Interview Master nor Constella Draw shows ads.

### Which is updated more often, Interview Master or Constella Draw?

Interview Master ships an update fortnightly, and Constella Draw every 9 days. Most recently, Interview Master was updated on September 16, 2026 and Constella Draw on October 3, 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.*