SMART Keypad vs Dairy Ventilation
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SMART Keypad
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.
- Inverter diagnosis and parameterization
- Device connection and search
- Parameter list and management
- Manual inverter control
- Parameter set transfer
- Error reset and device reset
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This app allows the diagnosis and parameterization of a Lenze i500 inverter. A WLAN module on the i500 inverter is required for communication. Supported views and functions: • Connect Device search, Direct connection via IP address, Simulation, GDC file • Diagnosis Dashboard, logbook, fieldbus, digital and analog inputs/outputs, process controller, device information • Basic commissioning via wizard • Parameter list Menu-guided overview of all device parameters • Transfer Up-/Download and e-mailing of parameter sets • Manual control Setpoint setting, start-stop function and reversal of direction of rotation • Optical tracking • Display of the current Wi-Fi network • Search for parameters • Set parameter values • Save the parameter set • Reset the error • Release controller • Inhibit controller • Reset device (PIN, parameter set and logbook) • Automatic and manual updating of device descriptions • Log in/out • Contact to support (mail and telephone)
Dairy Ventilation
This tool helps dairy producers make informed decisions about managing heat stress and mechanical ventilation in barns. It calculates key metrics like the Temperature-Humidity Index and fan efficiency, aiding in system design and upgrades.
- Temperature-Humidity Index (THI) calculation with location-based weather
- Fan sizing and selection for barns
- Assessment of existing ventilation performance
- Fan efficiency comparison
- Payback period analysis for upgrades
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Welcome to the Dairy Ventilation Calculator- a free UW-Madison Extension tool for dairy producers to support decisions about heat stress management and mechanical ventilation in dairy barns. FEATURES - THI (Temperature-Humidity Index) with location-based weather - Adopting Fans calculator — size and select fans for your barn - Evaluating Ventilation calculator — assess existing ventilation performance - Fan Efficiency comparison chart — compare fan models side by side - Payback Period analysis — estimate return on investment for upgrades WHO IT'S FOR - Dairy producers managing heat stress in cow housing - Farm managers planning fan upgrades or new ventilation systems - Extension educators and dairy consultants ABOUT Developed by Nesli Akdeniz in Biological Systems Engineering at UW-Madison as an educational and decision-support tool for dairy producers. Calculations follow established methods used in dairy ventilation design. Results are intended to give general guidance. Final decisions and outcomes remain the responsibility of the user.
Screenshots
Verdict
The clearest difference is update cadence: Dairy Ventilation at every 2 weeks against SMART Keypad's every 8 months. On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
SMART Keypad ships an update every 8 months, Dairy Ventilation every 2 weeks. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.
| Parameter | SMART Keypad | Dairy Ventilation |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | 20.0% of reviews | — |
| Number of ratings | — | 4 — better |
| Update frequency | Every 8 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.2 — better | 15.1 |
| Further details — not scored | ||
| Size | 90 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Lenze SE | University of Wisconsin-Madison Shared Apps |
Customer experience
SMART Keypad
Dairy Ventilation
In-app purchases
SMART Keypad
No in-app purchases
Dairy Ventilation
No in-app purchases
Questions
Is SMART Keypad free?
Is Dairy Ventilation free?
Do SMART Keypad or Dairy Ventilation have ads?
Which is updated more often, SMART Keypad or Dairy Ventilation?
Other comparisons
