# SMART Keypad vs ESSENTIAL Mobile

The clearest difference is update cadence: ESSENTIAL Mobile at every 2 months against SMART Keypad's every 8 months. SMART Keypad's advantage is iOS requirement (14.2 vs 18.0). 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.

SMART Keypad ships an update every 8 months, ESSENTIAL Mobile every 2 months. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SMART Keypad | ESSENTIAL Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 90 MB | 1 MB |
| Requires iOS | **14.2** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lenze SE](https://appshunter.io/developer/570667635) | [Rieter Machine Works Ltd.](https://appshunter.io/developer/733788044) |

## What reviewers say

### SMART Keypad

[App page](https://appshunter.io/ios/app/smart-keypad/id1292192378)

This application enables the diagnosis and configuration of a Lenze i500 inverter via a WLAN module. It offers features for connecting, diagnosing device status, performing basic commissioning, managing parameters, and controlling the inverter manually. Users can also transfer parameter sets and reset errors.

**Highlights:** Inverter diagnosis and parameterization, Device connection and search, Parameter list and management, Manual inverter control, Parameter set transfer, Error reset and device reset

**In-app purchases:** none


### ESSENTIAL Mobile

[App page](https://appshunter.io/ios/app/essential-mobile/id6502454140)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SMART Keypad free?

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

### Is ESSENTIAL Mobile free?

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

### Do SMART Keypad or ESSENTIAL Mobile have ads?

Neither SMART Keypad nor ESSENTIAL Mobile shows ads.

### Which is updated more often, SMART Keypad or ESSENTIAL Mobile?

SMART Keypad ships an update every 8 months, and ESSENTIAL Mobile every 2 months. Most recently, SMART Keypad was updated on October 7, 2026 and ESSENTIAL Mobile on October 8, 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.*