Comparison

Backcast vs Ember

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

Head to head
About

Backcast

This platform connects users to share visionary ideas and transform them into actionable research themes. Engage in discussions within specialized forums, contribute your insights, or create your own topic to foster collective intelligence and collaboration.

Highlights
  • Explore 'Trees of Interest' forums
  • Engage in discussions and share insights
  • Create and manage your own topic trees
  • Personalized content feed
  • Connect with users for collaboration
  • Develop actionable research themes
Features
Read full description

Join a community of thinkers, dreamers, and performers in Backcast, the pioneering platform designed to turn your visionary wishes, no matter how big or small, into actionable research themes and technological breakthroughs. Your ideas are the sparks that ignite change, and with Backcast, we bring them to life! How to use this app: 1. Explore Trees of Interest: Begin by searching for keywords that align with your interests. This will display 'trees' - our unique forums where specific themes are discussed. In these trees, you can engage in rich conversations about visions, approaches, and technologies with a community of individuals with a common interest. 2. Share Your Thoughts: Join any tree that resonates with your ideas and contribute your thoughts. Your insights and perspectives are valuable in shaping the collective understanding of the theme. 3. Create Your Own Tree: Have a vision for a specific future? Start your own tree and invite others to add their ideas and insights. Your tree is a space for nurturing and growing concepts that can one day become reality. 4. Personalised Feed: Your home screen feed will present you with topics, discussions in trees, and comments based on the tags you've selected. This tailored experience ensures you're always in the loop with discussions that matter most to you. 5. Connect and Collaborate: Found individuals whose technology interests align with your company's goals? Follow them, connect, and start a conversation. Backcast is not just about sharing ideas; it's a gateway to meaningful collaborations and partnerships. 6. Backcast is more than an app – it's a movement towards a future shaped by collective intelligence and shared visions. Join us, share your ideas, and be part of the change you wish to see in the world. Why I am developing this app: I want to be a researcher who develops technology that will impact the world. However, I need to know what will be required in the future to conduct impactful research. Otherwise, I will not be able to formulate sound research themes. If you become a researcher directly from a university, you will have more difficulty grasping the world's needs than someone working in a company. On the other hand, if you work for a company after leaving university, you may worry about falling behind as a researcher during that period. I decided to plan this application to solve this problem and to create a system that makes it easier for university researchers to formulate research themes that will lead to solutions to future issues in the world. I used the backcasting method as a reference. This is a method of thinking about what a particular area (e.g., physical health, environmentally friendly transportation) should look like in the future (e.g., 10 or 20 years from now), what approaches are needed to realise that ideal image, and what technologies will be required to learn those approaches. The "what technology is needed" part is the research theme that will contribute to the world. However, I also learnt that this method of backcasting is complex. If you think only about yourself and those close to you, you will think about the ideal future that affirms what you want to do and be biased. Therefore, I decided to create this application, thinking that it would be a good idea if we could create a mechanism to share our ideas of what we believe the future should look like, the approaches and technologies to reach them, and then widely exchange opinions.

About

Ember

Features
Read full description

Ever wondered who you just walked past? Ember: Real Sparks shows you people you’ve crossed paths with in real life. Open the app and see the strangers you’ve walked near today, the person you noticed earlier at the café, or someone you passed on your commute. Turn real-world moments into real connections. Discover people who were nearby at the same time and place as you. That person at the beach. The one in the park. The stranger you saw yesterday. Features: • See people you’ve walked past or been near • Discover new faces someone else might have noticed • Connect through shared locations and real-world moments • A fresh way to turn brief encounters into real connections Stop scrolling strangers. Start discovering the ones you’ve already passed, seen, or noticed.

Screenshots

Backcast4 screens
Ember4 screens

Verdict

The call

The clearest difference is ads: Backcast at none against Ember's shown. Backcast also leads on iOS requirement (12.0 vs 15.1). Ember's advantage is update cadence (every 4 days vs every 5 weeks). On price, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Backcast ships an update every 5 weeks, Ember every 4 days. The most recent releases landed on September 10, 2026 and February 23, 2026 respectively.

Scorecard3 real differences · 6 level
Backcast versus Ember: the parameters behind the verdict, then further details
ParameterBackcastEmber
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 5 weeksEvery 4 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size27 MB51 MB
Age rating4+17+
DeveloperHikari SuwaLuka Barisic

In-app purchases

None

Backcast

No in-app purchases

None

Ember

No in-app purchases

Questions

Is Backcast free?
Backcast is free to download, with no in-app purchases.
Is Ember free?
Ember is free to download, with no in-app purchases.
Do Backcast or Ember have ads?
Ember shows ads; Backcast does not.
Which is updated more often, Backcast or Ember?
Backcast ships an update every 5 weeks, and Ember every 4 days. Most recently, Backcast was updated on September 10, 2026 and Ember on February 23, 2026.

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