# Flir One vs X

The clearest difference is rating: Flir One at 4.6 against X's 1.0. Flir One also leads on ads (none vs shown) and update cadence (every 5 weeks vs every 8 months). X's advantage is iOS requirement (12.0 vs 18.0). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Flir One sells 1 in-app purchase, starting at $29.99 per year and X sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Flir One holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Flir One has 7.6K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 22% of Flir One's written reviews are positive against 0% of X's.

Flir One ships an update every 5 weeks, X every 8 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Flir One | X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (7.6K ratings)](https://appshunter.io/ios/app/flir-one/id875842742/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/x-ray-vision-style-filter-fx/id1605123089/reviews) |
| Number of ratings | **7.6K** | 1 |
| Positive reviews | **21.6% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 8 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 178 MB | 64 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [FLIR Systems Aktiebolag](https://appshunter.io/developer/408612990) | [iDevver Apps Limited](https://appshunter.io/developer/453983205) |

## What reviewers say

### Flir One

[App page](https://appshunter.io/ios/app/flir-one/id875842742)

This app transforms your smartphone into a thermal imaging device when connected to a compatible camera. It helps identify hidden issues like water damage, electrical faults, and HVAC problems with advanced visual enhancements and measurement tools. Document and share your findings easily.

**Highlights:** Thermal camera view, Capture photos and videos, Temperature spot measurements, Color palette selection, Add text notes, Cloud upload and organization, Inspection guides

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Inspection Guides | $29.99 | per year |

**What reviewers like**

- 🚀 Great for finding animals
- 🚀 Excellent affordable option for home inspection
- 🚀 Valued piece of tech for animal rescue
- 🚀 Excellent piece of equipment
- 🚀 Simple but informative

**What reviewers complain about**

- 🐛 Image alignment issues
- 🐛 Scam - won't connect
- 🐛 Poor App/Image refresh
- 🐛 Waste of money
- 🐛 Poor UX, only real option

**Reported bugs**

- Constantly disconnecting
- App crashes
- Doesn't work with older devices after updates
- Slow refresh rate and high latency
- App requires full photo library access

**Requested features**

- Bring back swiping between thermal and regular images
- Allow locking temperature scale
- Add temperature range display
- Allow setting own emissivity value
- Allow selecting colors on manual temperature scale


### X

[App page](https://appshunter.io/ios/app/x-ray-vision-style-filter-fx/id1605123089)

Simulate an X-ray vision filter to create unique and fun images for social media or pranks. This app is for entertainment purposes only and is not a real medical scanner.

**Highlights:** X-ray vision filter simulation, Create unique social images, Fun prank tool, Photo FX editing, Profile picture enhancement

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| See Through Style FX Unlock | $1.99 | one-time |
| Unlock All FX & Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Flir One free?

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

### Is X free?

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

### Which has better reviews, Flir One or X?

Flir One is rated higher. Flir One averages 4.6 out of 5 from 7.6K ratings, while X averages 1.0 from 1 ratings.

### Do Flir One or X have ads?

X shows ads; Flir One does not.

### Which is updated more often, Flir One or X?

Flir One ships an update every 5 weeks, and X every 8 months. Most recently, Flir One was updated on November 6, 2026 and X on November 3, 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.*