IoT & Environment

The Challenge

Making air quality tangible

People who judge indoor air only by how it feels easily miss issues such as volatile organic compounds (TVOC), carbon dioxide, humidity, or particulate matter—especially in offices, schools, and homes with irregular ventilation. Without reliable readings and understandable trends, actions like opening windows or replacing filters stay guesswork. Users need a clear mobile experience that works day to day without jargon.

Sensors, radio link, and device diversity

Air-quality hardware comes from different vendors, with different payloads and typically low-energy radio—often Bluetooth Low Energy. The app must handle pairing, reconnects, and background behaviour robustly so measurement series are not lost and the UI does not turn into an expert console. Privacy and transparency around Bluetooth and related permissions matter from day one so users keep trust in the product.

UX and alerting expectations

Real time alone is not enough: users expect charts to spot daily patterns and ventilation windows, plus notifications when thresholds are exceeded—without turning the app into a constant alarm. The challenge is a calm, readable UI with quick comprehension of key figures and actionable cues instead of raw tables.

Our Solution

App screenshots

Mobile app with BLE connectivity and clear visualisation

For InAirQ we delivered a native iOS and Android solution: the app connects via Bluetooth Low Energy to compatible sensors, shows current readings in a structured way, and keeps histories so values can be interpreted over hours and days. Threshold monitoring informs users when limits are exceeded—making TVOC and further indoor air parameters tangible without forcing users through spreadsheets or opaque terminology.

Delivery by Groenewold IT Solutions

Development took place in Leer, East Frisia—Made in Germany with short communication paths and maintainable architecture: clear separation between device communication and presentation layers, and testable modules for BLE and UI. That keeps the app extensible when sensor firmware or additional metrics change in the product roadmap.

Results

More transparency for healthier indoor air

With InAirQ, an abstract topic becomes a practical overview: users see trends, can ventilate and use rooms more consciously, and get timely alerts when values turn critical. For organisations and households that means less guesswork and a better basis for concrete measures—from ventilation habits to filters or additional sensor coverage.

Reference for IoT, environment, and health-adjacent apps

The project shows how we deliver sensor-driven mobile apps from radio integration to store-ready UX—with focus on stability, usability, and ongoing evolution. If you plan a comparable solution for measurement hardware, environmental monitoring, or smart-building scenarios, InAirQ is a concrete example from our practice in East Frisia.

Metrics and interpretation

TVOC, CO₂, humidity, temperature, particulates

Depending on the sensor setup, the app can present TVOC alongside values such as carbon dioxide, relative humidity, temperature, and particulate matter (PM)—always aiming for quick context instead of isolated numbers. The UI targets everyday users rather than lab specialists.

Technical foundation

Connectivity uses Bluetooth Low Energy so sensors typically stay low power and can be placed close to the measurement point. On the phone side we emphasise stable connection states and understandable status cues so daily use and support stay manageable.

Features

Feature overview

Real-time display of indoor air quality and environmental parameters
Sensor connection via Bluetooth Low Energy (BLE)
Charts and histories for interpretation over time
Notifications when configurable thresholds are exceeded
Support for common iOS and Android devices
Intuitive interface for everyday use without a glossary
Architecture with clear separation: device logic, data, UI
Delivery and support by Groenewold IT Solutions in Leer/East Frisia, Germany (Made in Germany)

InAirQ Air Quality App – IoT Monitoring for Indoor Air