# IDFX Practice Test vs What They See

The clearest difference is rating: What They See at 4.2 against IDFX Practice Test's 1.0. What They See also leads on review sentiment (33% vs 0%) and update cadence (fortnightly vs every 5 months). IDFX Practice Test's advantage is iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. IDFX Practice Test sells 1 in-app purchase, starting at $7.00 per month and What They See sells 12 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

What They See holds the better App Store score, 4.2 against 1.0. That said, the two scores are not equally well evidenced: What They See has 39 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of IDFX Practice Test's written reviews are positive against 33% of What They See's.

IDFX Practice Test ships an update every 5 months, What They See fortnightly. The most recent releases landed on October 28, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | IDFX Practice Test | What They See |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/idfx-practice-test/id6744161546/reviews) | **[4.2 (39 ratings)](https://appshunter.io/ios/app/what-they-see/id6755517347/reviews)** |
| Number of ratings | 1 | **39** |
| Positive reviews | 0.0% of reviews | **33.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 3 MB | 85 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Ambitionz Apps](https://appshunter.io/developer/1764753535) | [Special Glasses LLC](https://appshunter.io/developer/1854349802) |

## What reviewers say

### IDFX Practice Test

[App page](https://appshunter.io/ios/app/idfx-practice-test/id6744161546)

Prepare for the NCIDQ IDFX exam with a comprehensive study tool. It offers multiple exam modes, customizable study options, and a robust question bank to help aspiring interior designers pass their certification.

**Highlights:** Three exam modes (Final, Practice, Flashcard), Study by individual categories, Customizable time limits, Comprehensive IDFX question bank, Performance tracking and reports, Regular content updates

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NCIDQ IDFX Practice Test | $7.00 | per month |


### What They See

[App page](https://appshunter.io/ios/app/what-they-see/id6755517347)

This app simulates various vision conditions and color blindness in real-time using your device's camera. Explore how different visual impairments and animal vision affect perception, with educational guides and sharing capabilities.

**Highlights:** Real-time vision condition simulation, Colorblindness simulation, Animal vision simulation, Dyslexia text transformation, In-depth educational guides, Photo and video capture with simulation, Sharing capabilities

**Features:** Family Sharing

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Astigmatism | $1.99 | one-time |
| Cataracts | $1.99 | one-time |
| Protanopia | $1.99 | one-time |
| Tritanopia | $1.99 | one-time |
| Keratoconus | $2.99 | one-time |
| Baby Vision | $2.99 | one-time |
| All Color Blindness | $3.99 | one-time |
| All Dyslexia Simulations | $4.99 | one-time |
| All Animal Vision | $7.99 | one-time |
| All Vision Impairments | $12.99 | one-time |
| Unlock Everything | $14.99 | one-time |
| Unlock Everything | $24.99 | one-time |


## Frequently asked questions

### Is IDFX Practice Test free?

IDFX Practice Test is free to download, with in-app purchases available.

### Is What They See free?

What They See is free to download, with in-app purchases available.

### Which has better reviews, IDFX Practice Test or What They See?

What They See is rated higher. IDFX Practice Test averages 1.0 out of 5 from 1 ratings, while What They See averages 4.2 from 39 ratings.

### Do IDFX Practice Test or What They See have ads?

Neither IDFX Practice Test nor What They See shows ads.

### Which is updated more often, IDFX Practice Test or What They See?

IDFX Practice Test ships an update every 5 months, and What They See fortnightly. Most recently, IDFX Practice Test was updated on October 28, 2026 and What They See on October 30, 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.*