RuuviTracker looks great.
Currently been looking for a solution where I could place RuuviTags all around my very old house. Monitoring temperature and fluctuations in humidity both under the floor where I can now using a long stick place tags under different parts of the house and also in the attic under the roof in areas where a sudden leakage would be detected.
Now this can now be solved by placing one or more RPi to connect the tags and then store and post trends. But would like a cellular connected device to do the same at our summer cottage and also for the boat.
Getting a tag like sensor to also monitor air quality would help with finding air quality problem early. The tags are super convenient for being able to place them any where in an old house.
Looking forward to play around with the tracker. There is definitely a need to do an easy setup to monitor old houses.