Comparison

FLEX IoT vs UDP Sender

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

FLEX IoT

Features
Read full description

The Flex IoT Cloud Server (or simply FCS) enables smart energy management, boosting your efficiency and cost savings while supporting sustainability efforts to offset your carbon footprint. FCS safeguards your home and business operations with intelligent alarms, triggers, and trend analysis. It offers a unique Zero Net Energy (ZNE) approach, providing customers with clear insights into energy consumption and generation after installing efficient ON-GRID systems like photovoltaic and wind. Main Features: •Seamless Energy Management: •Wired (Modbus, RS-485, Ethernet) and wireless (Wi-Fi, RF433, Z-Wave, Tuya, LoRaWAN) concentrators. •Compact Smart Energy meters can be easily installed on DIN rails in distribution panels for non-invasive monitoring. •Versatile Control and Monitoring: •Control and monitor energy across Lighting Processors and Single and Three Phase Smart Meters. •Compare consumption between sectors, assets, or shifts for optimized energy usage. •Wide Applicability: •Ideal for residential, Airbnb, commercial, hotel, hospital, and industrial applications. •Suitable for various setups, including EV charging stations, elevator control, industrial robots, public lighting, and PV(Photovoltaic) systems. •Secure and Easy Integration: •Ensure secure data communication and seamless integration with automation systems like Control4, SCADA, and BMS/PMS. •Compact design allows easy installation and configuration through embedded Flex Web Server. •Customizable Dashboards and Reports: •Generate customizable dashboards and periodic reports for detailed energy monitoring. •Control energy consumption economically with monthly reports in local currency. •Standalone Automation: •Configure triggers and alarms for conditions like over/under voltage, maximum demand, low power factor, and more. •Receive real-time notifications via WhatsApp, Push or email for any critical alerts. * Example: If voltage exceeds 240Vac, automatically switch off the Power and notify the user. •Advanced Automation and Macros: •Create complex macros for lighting, circadian CCT cycles, air conditioning, audio/video systems, and motorized shades. •Customize multi-tariff settings for up to four different rates and seasonal hour settings (Peak/Off Peak). •Compliance and Standards: •Meets all relevant safety and quality standards (IEC, CE, EAC, MID). Experience the future of energy control with Flex IoT.

About

UDP Sender

Features
Read full description

UDP is a simple application whose purpose is to send UDP packets using UDP (User Datagram Protocol), a fast and low latency sending protocol. You can send these packets through the WiFi network, defining an IP address, a port and an interface that allows you to configure the packets to be sent. You can use this app to send simple and fast commands to other connected devices on your network. You can control things like: - Simple robots based on Arduino - Desktop/mobile applications that listen for commands with the UDP protocol - Any DIY ideas you can think of This application is free and does not display any type of advertising.

Screenshots

FLEX IoT4 screens
UDP Sender4 screens

Verdict

The call

The clearest difference is update cadence: UDP Sender at fortnightly against FLEX IoT's every 10 months. FLEX IoT's advantage is iOS requirement (15.1 vs 17.6). On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

FLEX IoT ships an update every 10 months, UDP Sender fortnightly. The most recent releases landed on October 19, 2026 and October 5, 2026 respectively.

Scorecard2 real differences · 4 level
FLEX IoT versus UDP Sender: the parameters behind the verdict, then further details
ParameterFLEX IoTUDP Sender
PriceFreeFree
Update frequencyEvery 10 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.6
Further details — not scored
Size31 MB4 MB
Age rating4+4+
DeveloperZ - Wave Tecnologia e Representacao de Aparelhos Eletronicos LTDA.Jhonyfer Angarita

In-app purchases

None

FLEX IoT

No in-app purchases

None

UDP Sender

No in-app purchases

Questions

Is FLEX IoT free?
FLEX IoT is free to download, with no in-app purchases.
Is UDP Sender free?
UDP Sender is free to download, with no in-app purchases.
Do FLEX IoT or UDP Sender have ads?
Neither FLEX IoT nor UDP Sender shows ads.
Which is updated more often, FLEX IoT or UDP Sender?
FLEX IoT ships an update every 10 months, and UDP Sender fortnightly. Most recently, FLEX IoT was updated on October 19, 2026 and UDP Sender on October 5, 2026.

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