Comparison

Passive Sampler vs Matcha AI・Food Calorie Scanner

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

Head to head
About

Passive Sampler

Features
Read full description

Passive sampler is an application to facilitate air quality monitoring. The application has been developed for a wide variety of projects aiming to simplify the execution of monitoring campaigns with passive samplers/sensors. The application has been designed for variety of projects covering: • Experts users • Collective users • Citizen science • Epidemiological studies • Personal exposure Key aspects of the application are: • User-friendly screens to deploy and collect samplers/sensors • Save site location by phone’s GPS • Upload pictures of the monitoring site • Share pictures of the monitoring sites on twitter, facebook or just e-mail it to a friend • Update user information • View map with all your monitoring locations • Extract information of you monitoring campaign The application has been developed for any type of passive sampler (NO2, O3, BTEX, SO2…). It can be adapted to any field monitoring campaign

About

Matcha AI・Food Calorie Scanner

Effortlessly track your nutrition by simply taking a photo of your meal. This AI-powered app instantly estimates calories, macronutrients, and portion sizes, making healthy eating and fitness goals more achievable.

Highlights
  • AI-powered calorie tracking
  • Photo calorie counter
  • Smart food scanner
  • Accurate meal tracker
  • Personalized insights
  • Track meals, snacks, and extras
Features
Read full description

Track your calories in seconds with AI! Matcha AI is an advanced AI calorie counter, food scanner, and meal tracker that makes tracking your nutrition fast, easy, and accurate—just by taking a photo of your food! Say goodbye to manual logging! Simply snap a picture of your meal and let Matcha AI's photo calorie counter instantly estimate calories, macronutrients, and portion sizes. It’s your personal AI meal tracker—always in your pocket. Why Matcha AI? AI-Powered Calorie Tracking – Let smart technology scan and analyze your meals. Photo Calorie Counter – Just take a photo and get instant calorie & macro breakdowns. Smart Food Scanner – Recognizes thousands of foods, from homemade dishes to packaged items. Accurate Meal Tracker – Monitor your daily intake and stay within your nutrition goals. Personalized Insights – Stay on track with your weight loss, fitness, or healthy eating journey. Track Everything – Meals, snacks, extras—Matcha AI keeps everything organized. How It Works Snap a photo of your meal. Let Matcha AI analyze it with smart food recognition. Instantly see calories, macros, and portion sizes. Stay on track toward your health goals. Whether you're trying to lose weight, build muscle, or simply eat better, Matcha AI is the ultimate AI calorie counter and meal tracker to guide your journey. Start for Free Try all premium features with a 3-day free trial, then subscribe for full access. Download Matcha AI today and experience the future of food tracking with the smartest AI-powered calorie counter in your pocket! Some features require a subscription, but you can start with a free trial to explore all premium benefits. Download Matcha AI and enjoy a 3-day free trial with access to all features. Subscription options after the trial include monthly and yearly plans. Subscriptions automatically renew, but you can cancel anytime in your app store settings. The subscription will auto-renew. You can cancel this anytime by going to “subscriptions” in the app store. Term of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://app.matcha-ai.fit/privacy

Screenshots

Passive Sampler4 screens
Matcha AI・Food Calorie Scanner4 screens

Verdict

The call

The clearest difference is in-app purchases: Passive Sampler at none against Matcha AI・Food Calorie Scanner's 5. Matcha AI・Food Calorie Scanner's advantage is update cadence (every 8 days vs every 3 weeks). On price, ads, device support and iOS requirement 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. Matcha AI・Food Calorie Scanner sells 5 in-app purchases, starting at $5.99 per 7 days. Passive Sampler asks for nothing beyond the download.

UpkeepUpdate frequency

Passive Sampler ships an update every 3 weeks, Matcha AI・Food Calorie Scanner every 8 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
Passive Sampler versus Matcha AI・Food Calorie Scanner: the parameters behind the verdict, then further details
ParameterPassive SamplerMatcha AI・Food Calorie Scanner
PriceFreeFree
Rating—4.3 (200 ratings) — better
Positive reviews—69.8% of reviews
Number of ratings—200 — better
Update frequencyEvery 3 weeksEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better14.0
Further details — not scored
Size49 MB38 MB
Age rating4+4+
DeveloperEuropeAirMatcha Blooms Studio

Bugs and requests

Passive Sampler

Not enough reviews yet to summarise bugs or requests.

Matcha AI・Food Calorie Scanner

Reported bugs

2 issues
  • Inability to restore purchases
  • Onboarding process issues

Requested features

2 requests
  • More defined workout features
  • Expanded user customization options

In-app purchases

None

Passive Sampler

No in-app purchases

5 purchases

Matcha AI・Food Calorie Scanner

Subscriptions4
  • Matcha AI weekly plan$5.997 Days
  • Monthly Plan$9.991 Month
  • Matcha AI Special Offer$23.991 Year
Show 1 more
  • Annual Plan + Free Trial3 Days trial$34.991 Year
One-time1
  • Lifetime Plan$24.99

Questions

Is Passive Sampler free?
Passive Sampler is free to download, with no in-app purchases.
Is Matcha AI・Food Calorie Scanner free?
Matcha AI・Food Calorie Scanner is free to download, with in-app purchases available.
Do Passive Sampler or Matcha AI・Food Calorie Scanner have ads?
Neither Passive Sampler nor Matcha AI・Food Calorie Scanner shows ads.
Which is updated more often, Passive Sampler or Matcha AI・Food Calorie Scanner?
Passive Sampler ships an update every 3 weeks, and Matcha AI・Food Calorie Scanner every 8 days. Most recently, Passive Sampler was updated on October 25, 2026 and Matcha AI・Food Calorie Scanner on October 24, 2026.

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