Comparison

tempi.fi vs Keltron AIR

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

Head to head
About

tempi.fi

This app connects to wireless sensors to continuously monitor temperature and humidity. Receive alerts for out-of-range conditions, store historical data, and export readings in CSV format. Ideal for various environments like refrigerators, nurseries, and greenhouses.

Highlights
  • Wireless sensor connection
  • Continuous temperature/humidity monitoring
  • Out-of-range alerts
  • Historical data storage
  • CSV data export
  • Automatic sensor setup
Features
Read full description

tempi.fi's wireless temperature and humidity sensors record a new reading every minute using best-in-class Swiss made temperature and humidity sensing components, sync directly to your smart phone, fit almost anywhere, and last longer than a year on a single coin cell battery. They are ideal for monitoring refrigerators, freezers, children’s rooms, animal & pet conditions, wine cellars, greenhouses, senior living conditions, freezing pipes, art collections, cigar humidors, chicken incubation, musical instruments and more… With this app, you can connect and setup one or more sensors, continuously monitor temperature and humidity, get notifications when the temperature or humidity is out of range, store a virtually unlimited history, and export data in CSV format. How it works: • Automatically setup your sensor by holding it over your phone or tablet • Name your sensor and set your desired conditions (if any) • When in range, the app will automatically upload the sensor data • If temperature or humidity is higher or lower than desirable, you get an app notification • View historical data and create reports anytime

About

Keltron AIR

Read full description

Using Keltron's registration, maintenance, and service features, you can monitor your Keltron devices as needed to ensure proper functionality.

Screenshots

tempi.fi4 screens
Keltron AIR4 screens

Verdict

The call

The clearest difference is update cadence: Keltron AIR at every 3 months against tempi.fi's every 9 months. 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

tempi.fi ships an update every 9 months, Keltron AIR every 3 months. The most recent releases landed on October 8, 2026 and October 1, 2026 respectively.

Scorecard1 real difference · 9 level
tempi.fi versus Keltron AIR: the parameters behind the verdict, then further details
Parametertempi.fiKeltron AIR
PriceFreeFree
Rating4.7 (19 ratings) — better—
Positive reviews92.9% of reviews—
Number of ratings19 — better—
Update frequencyEvery 9 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size22 MB10 MB
Age rating4+4+
DeveloperVITALNOMAD LLCKeltront IoT Corporation

In-app purchases

None

tempi.fi

No in-app purchases

None

Keltron AIR

No in-app purchases

Questions

Is tempi.fi free?
tempi.fi is free to download, with no in-app purchases.
Is Keltron AIR free?
Keltron AIR is free to download, with no in-app purchases.
Do tempi.fi or Keltron AIR have ads?
Neither tempi.fi nor Keltron AIR shows ads.
Which is updated more often, tempi.fi or Keltron AIR?
tempi.fi ships an update every 9 months, and Keltron AIR every 3 months. Most recently, tempi.fi was updated on October 8, 2026 and Keltron AIR on October 1, 2026.

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