# Fluke iSee vs Zark Update

The clearest difference is iOS requirement: Fluke iSee at 11.0 against Zark Update's 13.0. 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.

Fluke iSee ships an update every 4 months, Zark Update every 2 months. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Fluke iSee | Zark Update |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (23 ratings)](https://appshunter.io/ios/app/fluke-isee/id6448859058/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 8.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 58 MB | 27 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [福禄克测试仪器(上海)有限公司](https://appshunter.io/developer/1651601381) | [SEC of America Incorporated](https://appshunter.io/developer/894019771) |

## What reviewers say

### Fluke iSee

[App page](https://appshunter.io/ios/app/fluke-isee/id6448859058)

This application connects to a thermal camera accessory to measure temperature and perform thermal imaging detection on your smart device. It's useful for inspections, field observations, and even educational purposes, revealing the hidden world of temperature.

**Highlights:** Real-time temperature measurement, Thermal imaging detection, Connects via Lightning interface, Portable and on-the-go use, Suitable for inspections and education

**In-app purchases:** none


### Zark Update

[App page](https://appshunter.io/ios/app/zark-update/id6673909377)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fluke iSee free?

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

### Is Zark Update free?

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

### Do Fluke iSee or Zark Update have ads?

Neither Fluke iSee nor Zark Update shows ads.

### Which is updated more often, Fluke iSee or Zark Update?

Fluke iSee ships an update every 4 months, and Zark Update every 2 months. Most recently, Fluke iSee was updated on October 24, 2026 and Zark Update on October 5, 2026.

---

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