Comparison

Belimo RetroFIT+ vs Navien

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

Head to head
About

Belimo RetroFIT+

Easily find the perfect HVAC replacement actuator for your old or damaged equipment. This app helps you identify the best fitting Belimo product for air or water applications, including globe and rotary valve actuators. It also integrates the complete sensor range and offers project planning tools.

Highlights
  • HVAC replacement actuator finder
  • Air and water solution identification
  • Globe and rotary valve actuator selection
  • Integrated sensor range
  • OCR function for character recognition
  • RetroFIT+ project creation and planning
Features
Read full description

Belimo RetroFIT+ App - Easy and convenient to your new Belimo product The new Belimo RetroFIT+ App allows you to easily find the best fitting HVAC (Heating, Ventilation and Air Conditioning) Belimo replacement with innovative technology for your old or damaged actuator. Whether Air applications or Water solutions if you are searching for a modernization or a replacement of your installation, you will quickly find the actuator (Globe valve actuator, rotary valve actuator,..) of Belimo which covers your needs and offers you best quality with high performance. The complete sensor range from Belimo is integrated in the App. As of now the OCR (Optical Character Recognition) function is available in the RetroFIT+ App. Create complete RetroFIT+ projects and plan as easily and efficiently as never before!

About

Navien

This app provides information on the latest innovations and allows users to log installation and service details for their units. Professionals can access live chat support and register installations, while owners can manage warranties and find local services.

Highlights
  • Log installation and service information
  • Live chat with support teams
  • Scan serial numbers for registration
  • Take job site photos
  • Search for wholesalers and training
  • Register units for warranty
  • Find local installers and service professionals
Features
Read full description

Navien Products & Service app gives users access to all the information on the latest Navien innovations and the ability to log installation, maintenance and service information for their Navien units. Industry professionals can log installation and service information for the units they work on, live chat with Navien teams including technical support, scan unit serial numbers to register their installations via NavienRewards, take job site photos with the camera function to add to unit service logs, search for local wholesalers and see the latest Navien training classes. Owners of Navien products can scan their unit serial number and register their unit for warranty, search for local and federal rebates, find a local installer or service professional, download brochures and operation manuals and so much more.

Screenshots

Belimo RetroFIT+4 screens
Navien4 screens

Verdict

The call

The clearest difference is rating: Belimo RetroFIT+ at 5.0 against Navien's 2.6. Navien's advantage is update cadence (monthly vs every 7 months) and ratings volume (33 vs 1). 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Belimo RetroFIT+ holds the better App Store score, 5.0 against 2.6. That said, the two scores are not equally well evidenced: Navien has 33 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Belimo RetroFIT+ ships an update every 7 months, Navien monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 7 level
Belimo RetroFIT+ versus Navien: the parameters behind the verdict, then further details
ParameterBelimo RetroFIT+Navien
PriceFreeFree
Rating5.0 (1 ratings) — better2.6 (33 ratings)
Positive reviews—0.0% of reviews
Number of ratings133 — better
Update frequencyEvery 7 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.515.1 — better
Further details — not scored
Size7 MB29 MB
Age rating4+4+
DeveloperBELIMO Automation AGNavien

Customer experience

Belimo RetroFIT+

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Navien

All ratings33 ratings
Positive39.4%
Neutral0.0%
Negative60.6%
Written reviews12 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Belimo RetroFIT+

No in-app purchases

None

Navien

No in-app purchases

Questions

Is Belimo RetroFIT+ free?
Belimo RetroFIT+ is free to download, with no in-app purchases.
Is Navien free?
Navien is free to download, with no in-app purchases.
Which has better reviews, Belimo RetroFIT+ or Navien?
Belimo RetroFIT+ is rated higher. Belimo RetroFIT+ averages 5.0 out of 5 from 1 ratings, while Navien averages 2.6 from 33 ratings.
Do Belimo RetroFIT+ or Navien have ads?
Neither Belimo RetroFIT+ nor Navien shows ads.
Which is updated more often, Belimo RetroFIT+ or Navien?
Belimo RetroFIT+ ships an update every 7 months, and Navien monthly. Most recently, Belimo RetroFIT+ was updated on November 2, 2026 and Navien on November 3, 2026.

Other comparisons