Comparison

GridMix vs Muse Calendar

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

Head to head
About

GridMix

This app visualizes your region's live CO₂ emissions and forecasts them for the next 24 hours. It helps you identify the cleanest times to use electricity, like charging an EV or running appliances, to reduce your carbon footprint.

Highlights
  • Live CO₂ emissions visualization
  • 24-hour emissions forecast
  • Marginal Operating Emissions Rate (MOER)
  • Fossil fuel percentage on grid
  • Location-aware coverage
  • Near real-time updates
Features
Read full description

Electricity isn’t equally clean every hour. This app shows your region’s live CO₂ and a 24-hour forecast so you can act when energy is cleanest. About to charge your EV or start the dryer? If the curve drops in an hour, wait and cut your emissions—no guesswork. Simple timeline, clear numbers, smarter choices. Know when your electricity is cleanest. Open the app and the gradient color tells the story in a glance: lighter green means cleaner power right now; darker tones mean it’s dirtier. No menus. No jargon. Just a quick read on your impact. For more detail, see the exact numbers: • MOER — the Marginal Operating Emissions Rate: the extra CO₂ emitted if one more megawatt-hour is used right now. Shown in lbs CO₂/MWh, it’s the most actionable way to time charging and appliances. • Fossil % — the share of your grid currently powered by fossil fuels. Plan smarter with a 24-hour forecast for your region. If emissions drop in an hour or two, you’ll see it, so you can delay EV charging, laundry, or heating/cooling to a cleaner window. Built on trusted public data. The app combines reliable datasets (U.S. EIA grid operations and EPA emissions) with robust statistical modeling. Data are refreshed throughout the day, so shifts in demand are captured in near real-time. Location-aware, nationwide coverage. We use your current location to map you to your Balancing Authority (BA) so you’re seeing the electricity you actually consume. The majority of major U.S. BAs are supported. Why you’ll love it • At-a-glance color gradient for “clean vs. dirty” right now • Current MOER (lbs CO₂/MWh) and Fossil % on your grid • 24-hour emissions forecast to pick the greenest hour • Near real-time updates as conditions change • Clean, minimal design—open, check, decide What’s next: widgets, notifications when low-emission hours are coming, a watchOS app, and more. Make timing your climate superpower. See when your energy is cleanest and act on it.

About

Muse Calendar

This minimalist calendar app offers a clean interface for organizing your life. It provides a daily inspirational quote and aesthetic widgets to keep you motivated and on track without distractions.

Highlights
  • Daily inspirational quotes
  • Aesthetic home screen widgets
  • Minimalist and distraction-free design
  • Seamless day, month, and year navigation
  • Localized wisdom based on system language
Features
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Muse Calendar: Your Daily Aesthetic Space Forget cluttered calendars. Muse is your minimalist daily companion built for clear minds and beautiful vibes. We’ve designed a quiet space for you to stay organized and find a little spark of inspiration every time you check the date. What’s Inside: Daily Spark: A curated "wisdom dictionary" giving you a fresh, unique quote to vibe with every single day. Aesthetic Widgets: Keep the inspo on your home screen. Our medium and large widgets let you check the date and your daily quote without even opening the app. Pure & Simple Design: Zero distractions. Just a clean interface with buttery-smooth animations and effortless navigation. Seamless Navigation: Effortlessly jump between Day, Month, and Year views to keep your life on track. Speak Your Language: Wisdom shouldn't be lost in translation. We offer accurate, localized wisdom based on your system language.

Screenshots

GridMix3 screens
Muse Calendar4 screens

Verdict

The call

GridMix and Muse Calendar are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

On the App Store both sit at effectively the same score — 5.0 for GridMix against 5.0 for Muse Calendar. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

UpkeepUpdate frequency

GridMix ships an update every 3 days, Muse Calendar every 5 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

ScorecardNo meaningful differences
GridMix versus Muse Calendar: the parameters behind the verdict, then further details
ParameterGridMixMuse Calendar
PriceFreeFree
Rating5.0 (3 ratings)5.0 (2 ratings)
Positive reviews—100.0% of reviews
Number of ratings3 — better2
Update frequencyEvery 3 days — betterEvery 5 days
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.2 — better17.6
Further details — not scored
Size97 MB17 MB
Age rating4+4+
DeveloperJohn Chaykowsky尚 王

Customer experience

GridMix

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Muse Calendar

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

GridMix

No in-app purchases

None

Muse Calendar

No in-app purchases

Questions

Is GridMix free?
GridMix is free to download, with no in-app purchases.
Is Muse Calendar free?
Muse Calendar is free to download, with no in-app purchases.
Which has better reviews, GridMix or Muse Calendar?
GridMix and Muse Calendar are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.
Do GridMix or Muse Calendar have ads?
Neither GridMix nor Muse Calendar shows ads.
Which is updated more often, GridMix or Muse Calendar?
GridMix ships an update every 3 days, and Muse Calendar every 5 days. Most recently, GridMix was updated on November 5, 2026 and Muse Calendar on October 31, 2026.

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