# Variance vs QuiddityML

The clearest difference is update cadence: QuiddityML at every 5 days against Variance's every 2 weeks. QuiddityML also leads on iOS requirement (15.1 vs 26.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Variance sells 2 in-app purchases, starting at $24.99 per month and QuiddityML sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Variance against 5.0 for QuiddityML. Both are backed by a comparable volume of ratings — 5 and 6 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Variance ships an update every 2 weeks, QuiddityML every 5 days. The most recent releases landed on September 30, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Variance | QuiddityML |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/variance-the-quant-prep-app/id6760629839/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/quiddityml-machine-learning/id6768768269/reviews) |
| Number of ratings | 5 | **6** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Freemium | Freemium |
| Size | 18 MB | 51 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Benjamin Kawano](https://appshunter.io/developer/1885410913) | [QuiddityML LLC](https://appshunter.io/developer/1896602968) |

## What reviewers say

### Variance

[App page](https://appshunter.io/ios/app/variance-the-quant-prep-app/id6760629839)

Prepare for quantitative finance interviews with this app. Practice probability, mental math, logic puzzles, and more with detailed solutions and progress tracking. Sharpen your mathematical intuition and problem-solving skills for trading and research roles.

**Highlights:** Probability practice, Mental math exercises, Logic puzzles, Detailed solutions, Progress tracking, Topic-specific practice

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Variance Pro Monthly | $24.99 | per month |
| Variance Pro Yearly | $99.99 | per year |


### QuiddityML

[App page](https://appshunter.io/ios/app/quiddityml-machine-learning/id6768768269)

Master machine learning and AI with interactive coding exercises and spaced repetition. This app offers structured learning paths, practical projects, and interview preparation to build deep understanding and practical skills.

**Highlights:** Structured AI learning tracks, Hands-on coding exercises, Spaced repetition for retention, Beginner-friendly explanations, Interview preparation, Real-world projects

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| QuiddityML Pro Monthly | $19.99 | per month |
| QuiddityML Pro Yearly | $149.99 | per year |


## Frequently asked questions

### Is Variance free?

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

### Is QuiddityML free?

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

### Which has better reviews, Variance or QuiddityML?

Variance and QuiddityML are both rated 5.0 out of 5 on the App Store, from 5 and 6 ratings respectively.

### Do Variance or QuiddityML have ads?

Neither Variance nor QuiddityML shows ads.

### Which is updated more often, Variance or QuiddityML?

Variance ships an update every 2 weeks, and QuiddityML every 5 days. Most recently, Variance was updated on September 30, 2026 and QuiddityML 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.*