Comparison

GhostNetZero vs Claud CO2

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

Head to head
About

GhostNetZero

Read full description

Help us in the search for ghost nets! With the GhostDiver app, you as an experienced diver can check already reported positions of lost fishing gear and thus make an important contribution to clean seas and a healthy underwater landscape. Professional divers are in place for an optimal and efficient recovery! The app shows you potential positions of ghost nets on a map. With your support we will find out, whether the find really is a ghost net! Dive at the location and verify the position. With this important information, the recovery of lost fishing gear can be optimally prepared and the nets recovered by specially trained divers. You have discovered a ghost net yourself? Report your find in the GhostDiver app and thereby make it accessible to our recovery divers. HOW THE APP WORKS: The app shows you potential ghost net locations on a map. These points were determined using a sonar device, which maps the seafloor. Save interesting points in the app and use the route function to plan your next dive. The routes can be exported as .gpx files. The app provides you with the exact position, a calculated dive depth, and the sonar image, so you are perfectly prepared for your dive. Use the report function to share your own finds. In the profile section you can learn everything about the WWF mission and the technology employed. ATTENTION: The app is only for confirming potential ghost net locations and reporting your own finds. Dive only according to your skills and use the positions shown on the map only to verify them. Recovery is done by professional divers with appropriate equipment and a recovery boat! IMPORTANT FUNCTIONS: - Verification of potential positions - Report function: reporting of new positions and own sightings - Favorites: Save potential positions in the memo - Route: planning of dive route to visit potential positions - .gpx export: downloading of route as .gpx for dive computer - Language: English, German, Polish, French and Spanish WWF GhostDiver - Help us to free our oceans from ghost nets!

About

Claud CO2

Features
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Claud CO2 helps you understand and reduce your personal carbon footprint β€” one day at a time. Log the activities that matter: driving, flying, public transport, food choices, home energy, walking, biking, tree planting, and recycling. See your real COβ‚‚ consumption and compensation build up over the week with clear charts and summaries. **Meet Claud, your carbon mascot** Claud is a friendly cloud that reflects your weekly COβ‚‚ health. Make greener choices and watch Claud thrive. Skip too many eco-friendly habits and Claud will let you know. **Plan greener trips** Use the built-in map to compare transport options side by side. Routes are ranked by COβ‚‚ impact β€” the greenest option is always shown first. Save trips directly to your activity log. **Sync with Apple Health** Automatically import step count and walking/running distance from HealthKit. Turn everyday movement into logged compensation without extra effort. **Weather-smart suggestions** Claud checks local weather and air conditions to nudge you toward walking or cycling when conditions are good β€” and warns you when outdoor activity isn't advisable. **Smart, data-driven tips** Get personalized insights based on your logged activities: usage trends, high-impact emitters, offset gaps, food swaps, and greener alternatives with real kg COβ‚‚ numbers. **Track trends over time** Weekly trends, consumption vs. compensation breakdowns, and your most-used activities help you spot patterns and improve. Subscriptions and lifetime plans unlock the full trackCO2 experience. Start your journey to a greener lifestyle today. Download the app today to subscribe . Subscription automatically renews based on your plan range (monthly or yearly). Cancel anytime. Access Details: All features, including activity logging, emission monitoring, offset programs, personalized tips, and advanced analytics, require a paid subscription (monthly or yearly plans, auto-renewing, cancel anytime) or a one-time lifetime purchase. A limited free preview is available to explore the app before purchasing. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: http://giusscos.it/privacy

Screenshots

GhostNetZero4 screens
Claud CO24 screens

Verdict

The call

The clearest difference is in-app purchases: GhostNetZero at none against Claud CO2's 7. GhostNetZero also leads on iOS requirement (14.0 vs 18.5). Claud CO2's advantage is update cadence (every 2 days vs every 4 months). On price, ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Claud CO2 sells 7 in-app purchases, starting at $1.99 per month. GhostNetZero asks for nothing beyond the download.

UpkeepUpdate frequency

GhostNetZero ships an update every 4 months, Claud CO2 every 2 days. The most recent releases landed on September 12, 2026 and September 9, 2026 respectively.

Scorecard3 real differences Β· 3 level
GhostNetZero versus Claud CO2: the parameters behind the verdict, then further details
ParameterGhostNetZeroClaud CO2
PriceFreeFree
Update frequencyEvery 4 monthsEvery 2 days β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS14.0 β€” better18.5
Further details β€” not scored
Size69 MB3 MB
Age rating4+4+
DeveloperWWF DeutschlandGiuseppe Pio Cosenza

In-app purchases

None

GhostNetZero

No in-app purchases

7 purchases

Claud CO2

Subscriptions5
  • Claud+3 Days trial$1.991 Month
  • Claud+ Family3 Days trial$3.991 Month
  • Claud+$4.997 Days
Show 2 more
  • Claud+7 Days trial$19.991 Year
  • Claud+ Family7 Days trial$39.991 Year
One-time2
  • Claud CO2 Lifetime$34.99
  • Claud CO2 Family Lifetime$59.99

Questions

Is GhostNetZero free?
GhostNetZero is free to download, with no in-app purchases.
Is Claud CO2 free?
Claud CO2 is free to download, with in-app purchases available.
Do GhostNetZero or Claud CO2 have ads?
Neither GhostNetZero nor Claud CO2 shows ads.
Which is updated more often, GhostNetZero or Claud CO2?
GhostNetZero ships an update every 4 months, and Claud CO2 every 2 days. Most recently, GhostNetZero was updated on September 12, 2026 and Claud CO2 on September 9, 2026.

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