# DataStructureAndAlgorithm vs Flash75

The clearest difference is price: Flash75 at Free against DataStructureAndAlgorithm's $7.99. Flash75 also leads on update cadence (every 2 weeks vs every 3 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Flash75 is free to download; DataStructureAndAlgorithm costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

DataStructureAndAlgorithm ships an update every 3 months, Flash75 every 2 weeks. The most recent releases landed on August 2, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | DataStructureAndAlgorithm | Flash75 |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 12 MB | 3 MB |
| Requires iOS | 16.3 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Buydeepdiscount.com LLC](https://appshunter.io/developer/817177888) | [Wenqi Wang](https://appshunter.io/developer/1813692423) |

## What reviewers say

### DataStructureAndAlgorithm

[App page](https://appshunter.io/ios/app/datastructureandalgorithm/id6503237307)

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

**In-app purchases:** none


### Flash75

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DataStructureAndAlgorithm free?

DataStructureAndAlgorithm costs $7.99, with no in-app purchases.

### Is Flash75 free?

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

### Do DataStructureAndAlgorithm or Flash75 have ads?

Neither DataStructureAndAlgorithm nor Flash75 shows ads.

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

DataStructureAndAlgorithm ships an update every 3 months, and Flash75 every 2 weeks. Most recently, DataStructureAndAlgorithm was updated on August 2, 2026 and Flash75 on September 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*