Comparison

Sift vs Liminal

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

Head to head
About

Sift

This app distills nonfiction books into short, digestible reads that can be finished in minutes. It helps users build a reading habit by integrating with their phone usage and offering features like reading locks and progress tracking. Discover new ideas and expand your knowledge efficiently.

Highlights
  • Short, thread-style book summaries
  • Reading Lock to block distracting apps
  • Daily reading goal and streak tracking
  • Highlight and save key ideas
  • Browse by topic and request books
  • Gentle reading reminders
Features
Read full description

Sift turns the world's best nonfiction into clear, thread-style reads you can finish in a few minutes, so the time you'd normally spend scrolling actually leaves you with something. Instead of fighting your phone habits, Sift works with them. Open the app like you'd open any feed, and read the key ideas from a great book in the time it takes to scroll past a dozen posts. And when you need a push, Sift can lock your most distracting apps until you've hit your reading goal. WHY READERS LOVE SIFT Read in minutes, not hours. Every book is distilled into a focused, easy-to-read thread you can finish in 5 to 10 minutes. Built like a feed, made for depth. A familiar, scrollable experience that finally points your attention somewhere worthwhile. Read first, scroll later. Turn on Reading Lock to block your most distracting apps until you've hit your daily reading goal. Your willpower, on autopilot. Keep what matters. Highlight and save the lines and ideas you want to remember, neatly organized by book. See real progress. Set a daily reading goal, build a streak, and watch your knowledge add up week after week. Find your next read. Browse by topic, search any title or author, and request the books you want covered. Reminders that respect you. Pick the times you read best and get gentle nudges that build the habit, never guilt. HOW IT WORKS Tell Sift what you're curious about and set a daily goal. Open the app whenever you'd reach for a feed, or let Reading Lock nudge you there by pausing your other apps. Read a thread, save the best parts, and keep your streak going. WHO IT'S FOR Sift is for curious people who want to read more but can never seem to find the time. If you'd rather walk away from your screen a little sharper, this is for you. Whether you love psychology, business, philosophy, productivity, or history, there's always something worth reading. Same habit. A better result. Download Sift and turn your daily scroll into a daily reading habit. — Sift is a membership with a free trial, billed as an auto-renewing subscription. Payment is charged to your Apple ID at confirmation of purchase. Your subscription renews automatically unless turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours of the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use: https://readwithsift.com/terms Privacy Policy: https://readwithsift.com/privacy

About

Liminal

Engage in thoughtful conversations with AI reconstructions of great minds. Explore philosophical concepts through interactive games and unique encounters designed for quiet reflection. Many features are available offline and free to use.

Highlights
  • AI reconstructions of great minds
  • Interactive philosophical games
  • Poetry generation
  • Question and answer sessions
  • Thought experiments
  • Offline play
  • No ads or tracking
Features
Read full description

Liminal is a quiet game about thinking. You arrive in the Atrium — a hall of doors. Behind each door is a great mind, reconstructed from their writings to think *with* you: Albert Camus on the café terrace, Nietzsche at altitude, Rumi turning toward the Beloved, Kafka in the unmarked office, the Stoic Marcus Aurelius, and more than a dozen others. Choose a voice, choose how you want to be met — challenged, accompanied, or left mostly to silence — and play. THE GAMES • Words for the Sea — offer a handful of words and receive a short poem in the thinker's voice. • Ask anything — put a real question to a real mind and hear a considered reply. • The Descent — one question, then deeper, and deeper still. • The Dilemma — a classic thought-experiment that branches to a reflection with no clean answer. • The Fork, The Reframe, Agree or Disagree, The Mask, A Minute of Silence — short games that read you back to yourself. ENCOUNTERS — where the voices meet • Two Voices — ask two thinkers one question and watch the second answer the first. • The Symposium — a panel answers, and a neutral narrator names the sharpest disagreement. • Philosophers' Football — draft two sides from the roster and let the eternal match be narrated. • The Oracle, The Gift, The Mirror — smaller rooms for fortune, reflection, and a parting tool to carry. QUIET BY DESIGN No ads. No tracking. No feed. Liminal asks nothing of you but attention. Many games work offline, for free. A NOTE ON THE VOICES The thinkers in Liminal are AI reconstructions written in each mind's spirit — they are not the real people, and nothing they say is professional advice. Liminal is for reflection, not counsel. Live, in-character answers are generated by Anthropic's Claude. The thinkers in Liminal are AI reconstructions — not the real people, and nothing they say is professional advice. Every line is original, written in each voice's spirit — never a verbatim quote from any author. Liminal is for reflection, not counsel. Live, in-character answers are generated by Anthropic's Claude. Sign in with Apple to carry your account and credits across devices. A handful of live answers are free; more are available as a small in-app purchase.

Screenshots

Sift4 screens
Liminal4 screens

Verdict

The call

The clearest difference is monetization model: Liminal at free with in-app purchases against Sift's subscription. Liminal also leads on device support (4 vs 2) and iOS requirement (17.0 vs 26.1). Sift's advantage is update cadence (weekly vs every 3 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. Sift sells 2 in-app purchases, starting at $9.99 per month and Liminal sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Sift against 5.0 for Liminal. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

Sift ships an update weekly, Liminal every 3 weeks. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

Scorecard4 real differences · 5 level
Sift versus Liminal: the parameters behind the verdict, then further details
ParameterSiftLiminal
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Number of ratings12 — better
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad, Mac, Apple Watch — better
Requires iOS26.117.0 — better
Further details — not scored
Size32 MB10 MB
Age rating12+12+
DeveloperSpringtown Labs Inc.Hessam Zahedi

Customer experience

Sift

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

Liminal

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Sift

Subscriptions2
  • Sift7 Days trial$9.991 Month
  • Sift7 Days trial$49.991 Year
1 purchases

Liminal

One-time1
  • 100 Credits$9.99

Questions

Is Sift free?
Sift is free to download, with in-app purchases available.
Is Liminal free?
Liminal is free to download, with in-app purchases available.
Which has better reviews, Sift or Liminal?
Sift and Liminal are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do Sift or Liminal have ads?
Neither Sift nor Liminal shows ads.
Which is updated more often, Sift or Liminal?
Sift ships an update weekly, and Liminal every 3 weeks. Most recently, Sift was updated on October 13, 2026 and Liminal on October 11, 2026.

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