# ModbusV vs Signl

The clearest difference is rating: Signl at 4.5 against ModbusV's 1.0. Signl also leads on update cadence (weekly vs every 17 months). ModbusV's advantage is device support (3 vs 1) and iOS requirement (12.2 vs 18.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. ModbusV sells 2 in-app purchases, starting at $0.49 per month and Signl sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Signl holds the better App Store score, 4.5 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

ModbusV ships an update every 17 months, Signl weekly. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | ModbusV | Signl |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/modbusv/id666607476/reviews) | **[4.5 (2 ratings)](https://appshunter.io/ios/app/signl-wifi-analyzer-and-mapper/id6796775708/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Weekly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 108 MB | 30 MB |
| Requires iOS | **12.2** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Chai Kunnasit](https://appshunter.io/developer/666607479) | [Victor Backouche](https://appshunter.io/developer/1876555009) |

## What reviewers say

### ModbusV

[App page](https://appshunter.io/ios/app/modbusv/id666607476)

This utility tool facilitates the conversion of Modbus and DirectNet V addresses. It is designed for users who need to translate between these two industrial communication protocols.

**Highlights:** Modbus address conversion, DirectNet V address conversion, Industrial communication protocol translation, Utility tool

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - 1 Month | $0.49 | per month |
| Premium - 1 Year | $3.99 | per year |


### Signl

[App page](https://appshunter.io/ios/app/signl-wifi-analyzer-and-mapper/id6796775708)

Visualize your home Wi-Fi signal strength in 3D using your phone's camera or imported floor plans. Identify dead zones and optimize router placement for a flawless connection throughout your home.

**Highlights:** 3D Wi-Fi signal visualization, LiDAR room scanning, Floor plan import (photo/PDF), Wi-Fi coverage mapping, Network diagnostics, Router/extender placement optimization

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Signl Pro — Weekly | $4.99 | per 7 days |
| Signl Pro — Yearly | $24.99 | per year |


## Frequently asked questions

### Is ModbusV free?

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

### Is Signl free?

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

### Which has better reviews, ModbusV or Signl?

Signl is rated higher. ModbusV averages 1.0 out of 5 from 1 ratings, while Signl averages 4.5 from 2 ratings.

### Do ModbusV or Signl have ads?

Neither ModbusV nor Signl shows ads.

### Which is updated more often, ModbusV or Signl?

ModbusV ships an update every 17 months, and Signl weekly. Most recently, ModbusV was updated on October 1, 2026 and Signl on October 11, 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.*