Comparison

Pillowbook vs Prism

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

Head to head
About

Pillowbook

Record your dreams and receive personalized interpretations based on a vast library of symbols and your unique personal history. This app builds a knowledge graph of your dream elements to reveal recurring themes and connections.

Highlights
  • Dream journaling
  • Personalized dream interpretation
  • Symbol library
  • Knowledge graph of dream elements
  • Theme and connection analysis
Features
Read full description

Pillowbook is a beautiful dream journal and personal dream decoder. Wake up, jot down whatever fragments of your dreams your sleeping mind leaves behind, and see a deep interpretation drawn from a built-in library of dream symbols and tuned to who you actually are. Most dream meaning apps hand you a generic one-size-fits-all dictionary. Pillowbook is different: every symbol, emotion, person, and place you log becomes a node in your own growing knowledge graph, so you can see which themes and people keep returning across nights and which symbols bind together to reveal the complex inner workings of your psyche.

About

Prism

Features
Read full description

Take a free personality test and get your complete results in minutes — no paywall, no account, no teaser. Every side of you. Take the 16-type test, Big Five, Enneagram and DISC, get your full report instantly, then see how you match with friends. Six tests, one profile - The 16 personality types test, Big Five (OCEAN), Enneagram, DISC, love and attachment style, and career fit. - Every framework woven into one personality profile that gets richer with each personality test you take. - Start with the 16 types test and add an Enneagram test, a Big Five test or a DISC assessment whenever you like. Your full report, free - Your complete personality test results — type, strengths, blind spots, careers, relationships, growth tips and famous examples. - Most apps show a teaser and lock the rest. Here the whole report is free, forever. - No account, no email, no sign-up to see your personality type. Dimensional, not just a box - See your exact percentage on every trait and axis, plus your scores across all 16 personality types. - A free personality test with real numbers behind it, not a lossy one-word label. - Big Five gives you OCEAN trait scores; the Enneagram test gives you your type, wing and triad. Compatibility & sharing - Run a personality compatibility test: enter a friend or partner's type to reveal your dynamics, what clicks, what to watch for, and a match score. - Compatibility works across the 16 types, so you can check anyone whose type you know. - Turn any result into a beautiful card and share it in a tap. Daily insight & deep dives - A fresh personality insight every day, a type of the day, and deep-dive reads on every type and trait. - Retake any personality test anytime and track how your personality type changes over time. Beautiful, fast & private - A premium result reveal, colourful trait animations and share-ready cards. - One question at a time, save and resume, a sensible length — no thirty-minute slog. - Your results, profile and history stay on your device. - Prism is made for self-discovery and entertainment, not clinical diagnosis. Our tests use original questions based on public personality models. Take the free personality test and discover your personality type with Prism today — every side of you.

Screenshots

Pillowbook4 screens
Prism4 screens

Verdict

The call

The clearest difference is iOS requirement: Prism at 13.0 against Pillowbook's 16.4. On price, update cadence, ads and in-app purchases 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

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.

Scorecard1 real difference · 8 level
Pillowbook versus Prism: the parameters behind the verdict, then further details
ParameterPillowbookPrism
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.413.0 — better
Further details — not scored
Size42 MB31 MB
Age rating4++4
DeveloperAndyTech, IncGunawan Santoso

In-app purchases

None

Pillowbook

No in-app purchases

None

Prism

No in-app purchases

Questions

Is Pillowbook free?
Pillowbook is free to download, with no in-app purchases.
Is Prism free?
Prism is free to download, with no in-app purchases.
Do Pillowbook or Prism have ads?
Neither Pillowbook nor Prism shows ads.
Which is updated more often, Pillowbook or Prism?
Pillowbook ships an update every 3 weeks, and Prism every 3 weeks. Most recently, Pillowbook was updated on October 24, 2026 and Prism on October 17, 2026.

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