Comparison

Geme.io vs Sekai

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

Head to head
About

Geme.io

This app visualizes real-time, street-level air pollution data on a shared map. Users can receive alerts for specific locations and view predicted pollution levels up to 48 hours in advance. It aims to empower individuals to combat climate change by monitoring local air quality.

Highlights
  • Real-time air pollution data
  • Street-level pollution mapping
  • Customizable location alerts
  • 48-hour pollution forecasts
  • Wearable sensor data integration
  • Shared virtual map
Features
Read full description

We are the first tech platform personalizing climate change and collectively cleaning our air. Rising levels of air-polluting gases are contributing to the greenhouse effect. Temperatures are rising and this affects global weather patterns. With Geme.io you can combat this, starting somewhere familiar and easy - your street. Geme.io is the only urban tech app displaying real-time, air pollution data on a shared, virtual map. The data is highly specific, communicating pollution levels at a street level and available on your mobile as well as library TV monitors and public places that use our web app. Data is captured with our groundbreaking, on-body and on-collar wearable sensors and then uploaded to the Geme.io virtual and shared map. App users can pin their own points of interest and receive air pollution level alerts (work, home, kindergarten, etc.) or in their general vicinity. Besides visualizing real-time air pollution, we are working with scientists to show predicted air pollution information 48 hours ahead of time surrounding the user’s points of interests on our virtual map. Geme.io uses your location to monitor air pollution, but the continued use of the GPS running in the background might decrease battery life. If you have problems with the app, please contact us at hello@geme.io

About

Sekai

Capture photos or thoughts and transform them into unique four-panel anime-style stories using creative prompts. This app offers a reflective ritual to help you notice and preserve life's fleeting moments, fostering deeper connections through shared narratives.

Highlights
  • Photo and thought capture
  • Creative story prompts
  • Four-panel anime-style stories
  • Reflection ritual
  • Story sharing
  • Curiosity sparks
Features
Read full description

You know what your friends are like in real life. But how would you get along in the spirit world? Who would survive a zombie apocalypse? What kind of trouble would you get into in another universe? Sekai is a place to explore these questions together, turning your answers into mini visual adventures starring you and your friends. Pick a Spark or make your own, answer it with friends, and watch your answers come together to shape the adventure. Real life is just the beginning.

Screenshots

Geme.io4 screens
Sekai4 screens

Verdict

The call

The clearest difference is review sentiment: Sekai at 100% against Geme.io's 0%. Geme.io's advantage is in-app purchases (none vs 3) and device support (3 vs 1). On price, update cadence and ads 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. Sekai sells 3 one-off in-app purchases. Geme.io asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
Geme.io versus Sekai: the parameters behind the verdict, then further details
ParameterGeme.ioSekai
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings—2 — better
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS11.0 — better16.4
Further details — not scored
Size72 MB99 MB
Age rating4+12+
DeveloperADVENTURE OF LIFETIME OUeSekai, Incorporated

Customer experience

Geme.io

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Sekai

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

In-app purchases

None

Geme.io

No in-app purchases

3 purchases

Sekai

One-time3
  • 500 Kai$4.99
  • 1100 Kai$9.99
  • 3600 Kai$29.99

Questions

Is Geme.io free?
Geme.io is free to download, with no in-app purchases.
Is Sekai free?
Sekai is free to download, with in-app purchases available.
Do Geme.io or Sekai have ads?
Neither Geme.io nor Sekai shows ads.
Which is updated more often, Geme.io or Sekai?
Geme.io ships an update fortnightly, and Sekai fortnightly. Most recently, Geme.io was updated on November 2, 2026 and Sekai on October 30, 2026.

Other comparisons