# Flash75 vs Qubiee

The clearest difference is in-app purchases: Flash75 at none against Qubiee's 2. Flash75 also leads on iOS requirement (15.6 vs 17.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Qubiee sells 2 in-app purchases, starting at $9.99 per month. Flash75 asks for nothing beyond the download.

Flash75 ships an update every 2 weeks, Qubiee every 10 days. The most recent releases landed on September 13, 2026 and August 16, 2026 respectively.

## The numbers

| Metric | Flash75 | Qubiee |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (12 ratings)](https://appshunter.io/ios/app/qubiee/id6754060406/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Monetization | — | Freemium |
| Size | 3 MB | 37 MB |
| Requires iOS | **15.6** | 17.5 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Wenqi Wang](https://appshunter.io/developer/1813692423) | [Qubiee, Inc.](https://appshunter.io/developer/1846504655) |

## What reviewers say

### Flash75

[App page](https://appshunter.io/ios/app/flash75/id6745749957)

**Features:** macOS Compatibility

**In-app purchases:** none


### Qubiee

[App page](https://appshunter.io/ios/app/qubiee/id6754060406)

This app makes learning quantitative finance engaging through daily quizzes and social challenges. Master probability, mental math, and options while connecting with peers to share insights and prepare for finance interviews. It offers a personalized and fun approach to building quantitative skills.

**Highlights:** Daily quizzes, Leaderboards, Social learning community, Probability and mental math practice, Options trading concepts, Interview preparation

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Qubiee Pro | $9.99 | per month |
| Qubiee Pro | $79.99 | per year |


## Frequently asked questions

### Is Flash75 free?

Flash75 is free to download, with no in-app purchases.

### Is Qubiee free?

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

### Do Flash75 or Qubiee have ads?

Neither Flash75 nor Qubiee shows ads.

### Which is updated more often, Flash75 or Qubiee?

Flash75 ships an update every 2 weeks, and Qubiee every 10 days. Most recently, Flash75 was updated on September 13, 2026 and Qubiee on August 16, 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.*