Comparison

Cubic vs Spongee

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

Head to head
About

Cubic

Transform passive reading into active learning by saving articles, organizing content, and creating reviewable flashcards from your highlights. Discover new material through RSS feeds or curated collections and track your learning progress over time.

Highlights
  • Discover content via RSS feeds and curated collections
  • Save articles and organize into a personal library
  • Add notes and highlights to saved content
  • Convert highlights into reviewable flashcards
  • Track reading habits and learning trends
  • Organize content for recall
Read full description

Cubic - Turn what you read into what you remember Cubic helps you move from passive browsing to active learning. Discover great content, save what matters, and revisit it in a way that actually sticks. DISCOVER WITH INTENT Follow RSS feeds or explore curated collections across topics like tech, design, and business. COLLECT WHAT MATTERS Save articles, organize them into your personal library, and add notes or highlights as you read. REFLECT TO REMEMBER Your highlights become reviewable flash cards, helping you retain ideas over time. A SMOOTHER READING FLOW Swipe through articles and uncover interesting ideas without juggling tabs. BUILD YOUR KNOWLEDGE SYSTEM All your content, notes, and insights—organized for recall, not just storage. TRACK YOUR LEARNING See reading habits and trends to understand what you consume and how you grow. If you read a lot but forget most of it, Cubic gives you a simple system: discover → collect → reflect. ---- Support: Check out https://cubic.surf/faq or contact feedback@cubic.surf Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://cubic.surf/privacy

About

Spongee

Features
Read full description

We come across meaningful, inspiring, educational content that inspire a better version of us. These genuinely precious gems should be captured in a way that is easy to revisit them regularly; so that we gradually grow into the better version they've inspired us to be. Spongee is a simple system that makes sure what you save actually stays with you: saving directly to your home screen. SAVE FROM ANYWHERE Reel, post, article, podcast, scripture, thread? Share it to Spongee straight from any app. An insightful reflection? Type it right into Spongee. A great quote on a physical book? Let Spongee scan it and lift the text for you. Bonus: attach a quick note on why it mattered, in your own words. This act of attaching a personal note signals to your brain that this matters. Neuroscience calls it elaborative encoding. REVISIT WITHOUT TRYING No digging through folders. Your saves rotate on your home screen widget every 30 minutes, so they resurface right where you already glance every time you unlock your phone. Repeated exposure over time is how ideas move from "I vaguely remember..." to "I actually know that." It's called the spacing effect (spaced repetition), one of the most reliable findings in memory research. FIND ANYTHING, INSTANTLY Every save lives on your Shelf, sorted and searchable. Filter by Links, Quotes, or see it all in one place. WHAT YOU GET • Share extension: save from Instagram, TikTok, YouTube, Safari, Reddit, Spotify. Anywhere. • Scan and save quotes straight from physical books • Your own note attached to every save • Home screen widget that resurfaces saves automatically • A searchable shelf of everything that ever moved you Stop letting the best things you come across slip into the void. Save it, note it, and let Spongee bring it back until it becomes a part of you. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Cubic4 screens
Spongee4 screens

Verdict

The call

The clearest difference is update cadence: Cubic at every 6 days against Spongee's every 2 weeks. Spongee's advantage is iOS requirement (15.6 vs 18.5). On price, ads, 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. Cubic sells 2 in-app purchases, starting at $3.99 per month and Spongee sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Cubic ships an update every 6 days, Spongee every 2 weeks. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 7 level
Cubic versus Spongee: the parameters behind the verdict, then further details
ParameterCubicSpongee
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 6 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.515.6 — better
Further details — not scored
Size63 MB96 MB
Age rating17+4+
DeveloperARPIT MATHURWen Jian Kwok

In-app purchases

2 purchases

Cubic

Subscriptions2
  • Cubic Pro Monthly$3.991 Month
  • Cubic Pro Yearly$14.991 Year
2 purchases

Spongee

Subscriptions2
  • Monthly$2.991 Month
  • Yearly$19.991 Year

Questions

Is Cubic free?
Cubic is free to download, with in-app purchases available.
Is Spongee free?
Spongee is free to download, with in-app purchases available.
Do Cubic or Spongee have ads?
Neither Cubic nor Spongee shows ads.
Which is updated more often, Cubic or Spongee?
Cubic ships an update every 6 days, and Spongee every 2 weeks. Most recently, Cubic was updated on October 14, 2026 and Spongee on October 3, 2026.

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