ModbusV vs Signl
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ModbusV
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.
- Modbus address conversion
- DirectNet V address conversion
- Industrial communication protocol translation
- Utility tool
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A utility tool for Modbus and DirectNet V address conversion.
Signl
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.
- 3D Wi-Fi signal visualization
- LiDAR room scanning
- Floor plan import (photo/PDF)
- Wi-Fi coverage mapping
- Network diagnostics
- Router/extender placement optimization
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See your WiFi painted onto a 3D map of your own home. Walk through your rooms with your iPhone. Signl measures the real signal in each one and shows you exactly where it drops, and where to move your router to fix it. WHAT YOU GET - 3D scan: walk through your home and watch the model build itself. LiDAR is used on iPhones that have it. - No LiDAR? Import a floor plan. Drop in a photo or a PDF and Signl reads the rooms. - Coverage map: every room measured and scored, weak spots marked where they actually are. - Live test: real speed and latency, measured from where you stand. Other apps give you a number. Signl gives you a place. Each measurement sits on the room it was taken in, so you know which wall is in the way and where the router belongs. YOUR SCANS STAY ON YOUR IPHONE The 3D model of your home never leaves your device. Nothing is stored on our servers. Floor plan photos are analyzed, then discarded. FREE AND PRO Scanning your home and building the 3D model are free. Signl Pro unlocks the full coverage heatmap, scores for every room, router placement recommendations and shareable reports. Signl Pro auto-renewable subscriptions: Yearly ($34.99/year) or Weekly ($5.99/week). A Lifetime purchase is also available. Payment will be charged to your Apple Account at confirmation of purchase. Your subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings at any time. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://signlwifi.com/privacy
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | ModbusV | Signl |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 4.5 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 17 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.2 — better | 18.0 |
| Further details — not scored | ||
| Size | 108 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Chai Kunnasit | Victor Backouche |
Customer experience
ModbusV
Signl
In-app purchases
ModbusV
- Premium - 1 Month$0.491 Month
- Premium - 1 Year$3.991 Year
Signl
- Signl Pro — Weekly$4.997 Days
- Signl Pro — Yearly$24.991 Year









