# WHERE'S  NUMBER! vs IQ React

The clearest difference is in-app purchases: WHERE'S  NUMBER! at none against IQ React's 5. WHERE'S  NUMBER! also leads on iOS requirement (12.0 vs 18.5). IQ React's advantage is update cadence (weekly vs every 25 months). On price, ads and device support there is nothing between them.

Both are free to download. IQ React sells 5 one-off in-app purchases. WHERE'S  NUMBER! asks for nothing beyond the download.

WHERE'S  NUMBER! ships an update every 25 months, IQ React weekly. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | WHERE'S  NUMBER! | IQ React |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/iq-react/id6751012579/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 25 months | **Weekly** |
| Monetization | — | Free |
| Size | 40 MB | 22 MB |
| Requires iOS | **12.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [mieko kamiya](https://appshunter.io/developer/544279597) | [Isaias Batista](https://appshunter.io/developer/1833119498) |

## What reviewers say

### WHERE'S  NUMBER!

[App page](https://appshunter.io/ios/app/wheres-number/id1611106033)

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

**In-app purchases:** none


### IQ React

[App page](https://appshunter.io/ios/app/iq-react/id6751012579)

Enhance your cognitive abilities with a data-driven approach to neural efficiency. This app offers personalized daily workouts and advanced analytics to improve speed, focus, and reaction time. Train your brain with a minimalist, distraction-free interface.

**Highlights:** Personalized daily workouts, Advanced analytics, Six core neurological pillars tracking, Minimalist dark-mode interface, Streak tracking, Elite cognitive science games

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 USD Donation | $0.99 | one-time |
| 3 USD Donation | $2.99 | one-time |
| 5 USD Donation | $4.99 | one-time |
| 10 USD Donation | $9.99 | one-time |
| 99 USD Donation | $99.99 | one-time |


## Frequently asked questions

### Is WHERE'S  NUMBER! free?

WHERE'S  NUMBER! is free to download, with no in-app purchases.

### Is IQ React free?

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

### Do WHERE'S  NUMBER! or IQ React have ads?

Neither WHERE'S  NUMBER! nor IQ React shows ads.

### Which is updated more often, WHERE'S  NUMBER! or IQ React?

WHERE'S  NUMBER! ships an update every 25 months, and IQ React weekly. Most recently, WHERE'S  NUMBER! was updated on October 13, 2026 and IQ React on October 11, 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.*