Comparison

Backcast vs SafeImpressions

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

SafeImpressions

Protect your photos from unauthorized sharing and exploitation. This app allows you to block screenshots and secure your images, offering peace of mind for you and your loved ones in the digital world. Create private profiles and groups for controlled sharing.

Highlights
  • Block screenshots of photos
  • Render images unusable by unauthorized viewers
  • Protect children's images
  • Prevent exploitation and financial gain from images
  • Premium private personal profiles
  • Private group settings
Features
Read full description

The Safe Impressions App was created after seeing an intimate family photograph shared in a negative light by unknown anonymous posters. This discomforting experience inspired her to create Safe Impressions App which gives you the capability to block and black out screenshots of your photos and rendering them unusable by unauthorised viewers or visitors. Safe Impressions allows you the comfort of knowing that your children or loved ones may post photos throughout the day while protecting their images, location tracking, cyberbullying and other ill intentions. The Safe Impressions App may also serve as a buffer from unsolicited viewers who seek to post your images for exploitation and financial gain. Additionally, The Safe Impressions App offers premium private personal profile, images or private group settings where you will have the comfort of posting your images to known and accepted subscribed members. In today’s world, the security of your privacy and intellectual property must be at the forefront of your and your loved ones protection in the vast and unknown cyber world. The Safe Impressions App is the answer to protecting you from that unwelcome and unwanted attention. In the words of Safe Impressions App creator, “If I can help the world somehow to protect children and people’s personal privacy in general with my app, I feel I have made my contribution.” Download Safe Impressions today on IOS and safeguard your photos and images with peace of mind. Terms & Conditions https://safe-impressions.com/terms-of-service/ Privacy Policy https://safe-impressions.com/privacy-policy/

Screenshots

Backcast4 screens
SafeImpressions4 screens

Verdict

The call

The clearest difference is in-app purchases: Backcast at none against SafeImpressions's 1. SafeImpressions's advantage is update cadence (every 2 days vs every 5 weeks). On price, rating, ratings volume 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. SafeImpressions sells 1 in-app purchase, starting at $1.99 per month. Backcast asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Backcast against 5.0 for SafeImpressions. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Backcast ships an update every 5 weeks, SafeImpressions every 2 days. The most recent releases landed on September 10, 2026 and June 2, 2026 respectively.

Scorecard3 real differences · 6 level
Backcast versus SafeImpressions: the parameters behind the verdict, then further details
ParameterBackcastSafeImpressions
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 5 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size27 MB54 MB
Age rating4+4+
DeveloperHikari SuwaSafe Impressions LLC

Customer experience

Backcast

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

SafeImpressions

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Backcast

No in-app purchases

1 purchases

SafeImpressions

Subscriptions1
  • Monthly Subscription$1.991 Month

Questions

Is Backcast free?
Backcast is free to download, with no in-app purchases.
Is SafeImpressions free?
SafeImpressions is free to download, with in-app purchases available.
Which has better reviews, Backcast or SafeImpressions?
Backcast and SafeImpressions are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Backcast or SafeImpressions have ads?
Neither Backcast nor SafeImpressions shows ads.
Which is updated more often, Backcast or SafeImpressions?
Backcast ships an update every 5 weeks, and SafeImpressions every 2 days. Most recently, Backcast was updated on September 10, 2026 and SafeImpressions on June 2, 2026.

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