# IRIS 860 setup vs Flatness

The clearest difference is update cadence: IRIS 860 setup at every 5 weeks against Flatness's every 16 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

IRIS 860 setup ships an update every 5 weeks, Flatness every 16 months. The most recent releases landed on October 5, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | IRIS 860 setup | Flatness |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flatness/id6463624359/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 16 months |
| Monetization | — | Free |
| Size | 37 MB | 61 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SEEN SAFETY LIMITED](https://appshunter.io/developer/1650672922) | [ACOEM Group](https://appshunter.io/developer/1495816959) |

## What reviewers say

### IRIS 860 setup

[App page](https://appshunter.io/ios/app/iris-860-setup-bt-dongle/id6443924890)

**Features:** macOS Compatibility

**In-app purchases:** none


### Flatness

[App page](https://appshunter.io/ios/app/flatness/id6463624359)

This app facilitates precise rectangular flatness measurements for applications like motor and pump foundations. It guides users through the entire measurement and alignment process when connected to an AT-400 Ultimate with an M9 sensor via Bluetooth. Generate instant PDF reports of your findings directly on-site.

**Highlights:** Bluetooth connectivity, Icon-based adaptive user interface, 3D result views, Instant PDF report generation, Guided measurement process

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IRIS 860 setup free?

IRIS 860 setup is free to download, with no in-app purchases.

### Is Flatness free?

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

### Do IRIS 860 setup or Flatness have ads?

Neither IRIS 860 setup nor Flatness shows ads.

### Which is updated more often, IRIS 860 setup or Flatness?

IRIS 860 setup ships an update every 5 weeks, and Flatness every 16 months. Most recently, IRIS 860 setup was updated on October 5, 2026 and Flatness on October 17, 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.*