# Flatness vs SKF iLMS

The clearest difference is update cadence: SKF iLMS at every 3 weeks against Flatness's every 16 months. Flatness's advantage is iOS requirement (12.0 vs 17.0). 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.

Flatness ships an update every 16 months, SKF iLMS every 3 weeks. The most recent releases landed on June 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Flatness | SKF iLMS |
| --- | --- | --- |
| 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 16 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 61 MB | 41 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ACOEM Group](https://appshunter.io/developer/1495816959) | [SKF](https://appshunter.io/developer/472922971) |

## What reviewers say

### 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


### SKF iLMS

[App page](https://appshunter.io/ios/app/skf-ilms/id6743708726)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flatness free?

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

### Is SKF iLMS free?

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

### Do Flatness or SKF iLMS have ads?

Neither Flatness nor SKF iLMS shows ads.

### Which is updated more often, Flatness or SKF iLMS?

Flatness ships an update every 16 months, and SKF iLMS every 3 weeks. Most recently, Flatness was updated on June 10, 2026 and SKF iLMS on September 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.*