Zero CO2 vs Algo Tranqui
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zero CO2
This app tracks your phone's carbon footprint from data usage and helps you offset emissions by planting trees. Monitor your CO2 output and see how your reforestation efforts compensate for it, receiving certificates for each planted tree.
- Monitors phone carbon footprint
- Tracks CO2 emissions from data usage
- Compensates emissions by planting trees
- Visualizes CO2 emissions and tree compensation
- Provides certificates for planted trees
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ZeroCO2 monitors your phone's carbon footprint and keeps track of the CO2 emissions from your device. These CO2 emissions come from the data usage of your device. All cloud-services, emails, search queries, social network activities etc, are facilitated by large Data Centers, which consume large amounts of electricity to keep your data streams flowing. Over its lifetime, an iPhone can emit up to 60 kilograms of CO2. This electricity typically does not come 100% from green sources, and therefore leads to CO2 emissions. That's equivalent to more than 300 kilometers driving in a petrol-fueled car. Do you want your phone to become CO2-neutral? Then use the app to plant trees to compensate your emissions! With its comprehensive graphs, you can easily monitor how much CO2 you emit, and how your planted trees compensate these emissions. With every planted tree, you receive a certificate that proves the authenticity and shows the location of the planted tree. Prevent climate change, and become a carbon-neutral iPhone user! Note: Trees are planted by our partner Tree-Nation, the worldwide platform to reforest the world and fight climate change. All trees planted by Tree-Nation are certified by the best in class and most renowned certification standards that exist in this field. For this, Tree-Nation works with third-party certification organizations such as VCS, Gold Standard, and Plan Vivo.
Algo Tranqui
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Algo Tranqui is the perfect party game for any gathering. Break the ice, laugh, and connect with your friends through original challenges that adapt to every mood: Chill, Medium, No Limits, Spicy, and Couples. Play with 2 to 12 people, choose the duration (15, 30, 45 minutes, or 1 hour), and let the game guide the night with fun questions, dares, and unforgettable moments. All prompts are written with care and designed for real groups — conversation, laughter, and a little spice (only if you choose it). Every card uses the players’ names for a personal touch, and all content is available in Spanish, English, and Portuguese. How to Play 1. Add the players. 2. Choose intensity and duration. 3. Play — each turn reveals a new challenge or question. 4. Check the Stats to see who was the boldest. What You’ll Love • Warm, premium design — visually Apple-friendly. • Curated categories: Connect, Soundtrack Vibes, Random Fun, Would You Rather, and Group Challenges. • Premium modes for when the night gets hotter. • Simple interface: open, laugh, play. Algo Tranqui turns any get-together into a night to remember — from something chill to no limits… you decide. Recommended for adults (21+). Play responsibly.
Screenshots
Verdict
The clearest difference is ads: Algo Tranqui at none against Zero CO2's shown. On price, in-app purchases, 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
Both are free to download. Zero CO2 sells 1 one-off in-app purchase and Algo Tranqui sells 2 in-app purchases, starting at $4.99 per 3 months. Whichever you choose, the download price is not the number that matters.
| Parameter | Zero CO2 | Algo Tranqui |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 days | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.5 — better | 16.6 |
| Further details — not scored | ||
| Size | 40 MB | 20 MB |
| Age rating | 12+ | 4+ |
| Developer | Caramba App Development | CARLOS ANTONIO MURRIETA STEINMAN |
In-app purchases
Zero CO2
- Plant your tree$0.99
Algo Tranqui
- Algo Tranqui Premium$4.993 Months
- Algo Tranqui Premium$17.991 Year









