Comparison

CleanAirOptima vs Zo Gemeld

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

Head to head
About

CleanAirOptima

Control and monitor your smart air quality devices remotely from anywhere in the world. Set desired temperature and humidity levels, and track air quality across different rooms in your home.

Highlights
  • Remote device control
  • Real-time monitoring
  • Temperature and humidity tracking
  • Room management
  • Global access with internet
Features
Read full description

Instant access, wherever you go. Connect smart Clean Air Optima devices, control and monitor them from everywhere in the world only through your smartphone. The CleanAirOptima app allows you to take full control of your indoor air quality. Connect your smart Clean Air Optima devices in a couple of taps: - Control and monitor your smart Clean Air Optima devices using this app from everywhere, either from your office or travelling around the world. All you need is internet access. - Depending on your smart devices, seamlessly monitor the real-time temperature and humidity and set your desired parameter with only a few taps. - Create different rooms in your home, e.g. living room, bedrooms, etc., and specify in which room your smart device is located. In this way, you can keep track of temperature and humidity in different areas in your home. We are working on one of the most important things in the world: Fresh, healthy indoor air. Clean Air Optima International B.V. stands for innovative Clean Air Optima® Air Treatment Technology with healthy indoor air, designed in Germany. Through innovative technology and unique styles, the products of Clean Air Optima fit seamlessly into the individual living ambience. Clean Air Optima Corporate Philosophy. The Clean Air Optima Group ensures its existence through the Satisfaction of its customers. The stated goal is highest Customer satisfaction. Clean Air Optima® products are Certified according to their intended purpose. And for this we constantly monitor the quality of the product, analyze customer problems and recommend appropriate solutions. We offer our customers a high quality customer service: they receive expert advice before and after purchasing our products.

About

Zo Gemeld

Easily report issues like fallen trees or abandoned bikes to your municipality. The app allows you to describe the problem, add photos, and specify the location. You can also track the status of your reports and opt-in for updates.

Highlights
  • Describe reports easily
  • Add pictures to reports
  • Specify report location
  • Track report status
  • Receive report updates
Features
Read full description

With Zo Gemeld you can easily send a report to your municipality. Whether its a fallen tree, an abandoned bike or broken trash container, you can send your report via Zo Gemeld. With Zo Gemeld you can: - Easily describe the report - Add pictures - Type in a location, select a location on the map or via GPS - Optionally you can leave behind you contact info to be kept into the loop about the report - See the status of the reports you have made A better municipality starts with the Zo Gemeld app.

Screenshots

CleanAirOptima4 screens
Zo Gemeld4 screens

Verdict

The call

The clearest difference is rating: Zo Gemeld at 4.7 against CleanAirOptima's 1.0. Zo Gemeld also leads on update cadence (every 2 weeks vs every 17 months) and ratings volume (3 vs 1). CleanAirOptima's advantage is iOS requirement (12.0 vs 15.0). 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

Zo Gemeld holds the better App Store score, 4.7 against 1.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

UpkeepUpdate frequency

CleanAirOptima ships an update every 17 months, Zo Gemeld every 2 weeks. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

Scorecard4 real differences · 5 level
CleanAirOptima versus Zo Gemeld: the parameters behind the verdict, then further details
ParameterCleanAirOptimaZo Gemeld
PriceFreeFree
Rating1.0 (1 ratings)4.7 (3 ratings) — better
Number of ratings13 — better
Update frequencyEvery 17 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better15.0
Further details — not scored
Size194 MB82 MB
Age rating4+4+
DeveloperClean Air Optima International B.V.Delta10 BV

In-app purchases

None

CleanAirOptima

No in-app purchases

None

Zo Gemeld

No in-app purchases

Questions

Is CleanAirOptima free?
CleanAirOptima is free to download, with no in-app purchases.
Is Zo Gemeld free?
Zo Gemeld is free to download, with no in-app purchases.
Which has better reviews, CleanAirOptima or Zo Gemeld?
Zo Gemeld is rated higher. CleanAirOptima averages 1.0 out of 5 from 1 ratings, while Zo Gemeld averages 4.7 from 3 ratings.
Do CleanAirOptima or Zo Gemeld have ads?
Neither CleanAirOptima nor Zo Gemeld shows ads.
Which is updated more often, CleanAirOptima or Zo Gemeld?
CleanAirOptima ships an update every 17 months, and Zo Gemeld every 2 weeks. Most recently, CleanAirOptima was updated on November 3, 2026 and Zo Gemeld on November 7, 2026.

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