# Flir One vs Tachyon

The clearest difference is rating: Flir One at 4.6 against Tachyon's 1.0. Flir One also leads on ratings volume (7.6K vs 1) and review sentiment (21% vs 0%). Tachyon's advantage is in-app purchases (none vs 1) and iOS requirement (15.0 vs 18.0). On price, update cadence, ads 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. Tachyon asks for nothing beyond the download.

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: 21% of Flir One's written reviews are positive against 0% of Tachyon's.

Flir One ships an update every 5 weeks, Tachyon every 6 weeks. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Flir One | Tachyon |
| --- | --- | --- |
| 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/tachyon/id1477577495/reviews) |
| Number of ratings | **7.6K** | 1 |
| Positive reviews | **21.4% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 178 MB | 52 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [FLIR Systems Aktiebolag](https://appshunter.io/developer/408612990) | [Chris Whitehouse](https://appshunter.io/developer/1481582836) |

## 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


### Tachyon

[App page](https://appshunter.io/ios/app/tachyon/id1477577495)

Control your camera remotely to start/stop recordings, play back footage in slow motion, and download videos directly to your iOS device. This app enhances your camera's functionality for seamless video capture and management.

**Highlights:** Remote recording control, Slow-motion playback, Video download to device, iOS device as remote, Compatible with Tachyon cameras

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

**In-app purchases:** none


## Frequently asked questions

### Is Flir One free?

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

### Is Tachyon free?

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

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

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

### Do Flir One or Tachyon have ads?

Neither Flir One nor Tachyon shows ads.

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

Flir One ships an update every 5 weeks, and Tachyon every 6 weeks. Most recently, Flir One was updated on October 15, 2026 and Tachyon on October 12, 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.*