# Big Data Knowledge Test vs VeriFlash

The clearest difference is ads: Big Data Knowledge Test at none against VeriFlash's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Big Data Knowledge Test sells 2 in-app purchases, starting at $13.99 per month and VeriFlash sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Big Data Knowledge Test ships an update every 3 months, VeriFlash every 2 months. The most recent releases landed on September 27, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Big Data Knowledge Test | VeriFlash |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 9 MB | 22 MB |
| Requires iOS | 17.2 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) | [Micheal Giles](https://appshunter.io/developer/1861603266) |

## What reviewers say

### Big Data Knowledge Test

[App page](https://appshunter.io/ios/app/big-data-knowledge-test/id6740737722)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $13.99 | per month |
| Lifetime version | $24.99 | one-time |


### VeriFlash

[App page](https://appshunter.io/ios/app/veriflash/id6756589715)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VeriFlash Pro (Monthly) | $4.99 | per month |
| VeriFlash Pro (Yearly) | $39.99 | per year |


## Frequently asked questions

### Is Big Data Knowledge Test free?

Big Data Knowledge Test is free to download, with in-app purchases available.

### Is VeriFlash free?

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

### Do Big Data Knowledge Test or VeriFlash have ads?

VeriFlash shows ads; Big Data Knowledge Test does not.

### Which is updated more often, Big Data Knowledge Test or VeriFlash?

Big Data Knowledge Test ships an update every 3 months, and VeriFlash every 2 months. Most recently, Big Data Knowledge Test was updated on September 27, 2026 and VeriFlash on October 2, 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.*