# SMART Testz vs X

The clearest difference is device support: SMART Testz at 3 against X's 1. SMART Testz also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SMART Testz ships an update fortnightly, X every 9 days. The most recent releases landed on October 17, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SMART Testz | X |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Size | 5 MB | 9 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [FutureDial Inc.](https://appshunter.io/developer/1163960008) | [Auto jaw co ltd](https://appshunter.io/developer/1330689436) |

## What reviewers say

### SMART Testz

[App page](https://appshunter.io/ios/app/smart-testz/id6450738223)

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

**In-app purchases:** none


### X

[App page](https://appshunter.io/ios/app/x-flap/id6760482755)

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

**In-app purchases:** none


## Frequently asked questions

### Is SMART Testz free?

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

### Is X free?

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

### Do SMART Testz or X have ads?

Neither SMART Testz nor X shows ads.

### Which is updated more often, SMART Testz or X?

SMART Testz ships an update fortnightly, and X every 9 days. Most recently, SMART Testz was updated on October 17, 2026 and X on October 8, 2026.

---

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