Comparison

Schrodinger's Box vs Parallel

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

Head to head
About

Schrodinger's Box

Engage with daily philosophical dilemmas and thought experiments. Make irreversible choices within a time limit and explore various perspectives on your decisions. This app focuses on serious thinking rather than gamification.

Highlights
  • Daily paradoxes and ethical dilemmas
  • Timed decision-making
  • Irreversible choices
  • Philosophical perspective insights
  • Privacy-focused, on-device storage
  • Archive access with Pro version
Features
Read full description

Schrödinger’s Box Most apps are designed to absorb time, smooth friction, and reward passivity. They assume you are bored and want to stay that way. Schrödinger’s Box was built as a refusal. Once a day, the app presents a single paradox, ethical dilemma, or thought experiment drawn from philosophy, science, and moral reasoning. You are given limited time. You must choose. There is no neutral option, no skipping, and no undo. When you decide, the question collapses, and the comfort of ambiguity collapses with it. This is not trivia, a quiz, or a game. The decision is the experience. How It Works • Once per day One challenge. No feeds, no binging, no endless scrolling. • Timed You cannot deliberate forever. The clock matters. • Irreversible Once you choose, it’s recorded. Just like real decisions. • Interpretive, not corrective Afterward, you’re shown multiple philosophical perspectives on the choice you made. There is rarely a single “right” answer. What You’ll Encounter Schrödinger’s Box draws from centuries of inquiry into questions that shape how we live: • Identity and persistence over time • Free will and causality • Moral judgment under constraint • Infinity, limits, and paradox • Mind, consciousness, and artificial intelligence These are not abstract puzzles. They are the same questions that quietly structure our assumptions about responsibility, agency, and meaning. Educators have long used dilemmas like these as intellectual icebreakers. They wake people up. They expose hidden intuitions. They reveal disagreement immediately. Schrödinger’s Box brings that experience into a daily, private ritual. What It Is Not • Not self-improvement • Not productivity • Not optimization • Not social media There are no scores, no streak pressure, and no behavioral manipulation. The goal isn’t to make you better. It’s to take thinking seriously. Privacy by Design Your choices are stored only on your device. There are no accounts. No tracking. No data collection. Your philosophical record belongs to you alone. Pro Version A one-time purchase unlocks: • Full access to the archive • Complete choice history • Advanced and harder challenges • Streak and pattern insights No subscriptions. No ads. Lifetime access. Open the box. Face uncertainty. Make a decision.

About

Parallel

Explore historical connections by viewing multiple timelines simultaneously. Discover who lived at the same time as historical figures and events. Create custom collections or use curated ones to delve into specific eras and topics.

Highlights
  • View multiple historical timelines
  • Discover contemporaries at a glance
  • Access concise biographies with Wikipedia links
  • Create custom history collections
  • Offline functionality
  • Private and no tracking
Features
Read full description

Who lived at the same time as Mozart, Van Gogh, or Napoleon? Parallel lays out several timelines at once, and the connections that usually stay hidden appear at a glance. It's your tool for assembling history around what interests you. Ten curated collections come built in, from earth history and the arts to sciences, rulers, empires, buildings, and the events that shaped history. They make it easy to start and give you a taste of what Parallel can do. The rest is yours to shape. For the curious, for the classroom, for everyone who loves history. WHAT YOU CAN DO • Swipe and zoom through the millennia, from antiquity to today. • Line up exactly the collections that fascinate you. • Highlight a person and see their contemporaries at a glance, while everything else fades into the background. • Open any entry for a clear, concise biography or summary, with a link to Wikipedia. • Bring dates and the Wikipedia link straight from Wikidata into your own entry. • Follow a single thread through time, filtered by topic, place, era, and more. • Create your own collections and fill them with what matters to you. • Zoom out from a single year all the way to 13.8 billion years. Every built-in entry is carefully researched, historically grounded, and fact-checked. Try it for free Ancient Rome is included as a ready-made sample collection, no Pro needed. In a few seconds you see how a collection comes together, and it stays with you afterwards. Buy once, no subscription. You buy Parallel just once. The Pro upgrade lifts every limit: unlimited collections and entries, creating and filling your own collections from a spreadsheet or from copied text, your own copies of the built-in collections, and exporting the whole timeline as a PDF. No hidden costs. If you want to go deeper into specific topics, optional premium collections are available. Private and offline Your entries stay on your iPhone. No account, no sign-up, no tracking. The app works offline. Only the Wikidata look-up needs an internet connection. History belongs to everyone, but your data belongs to you.

Screenshots

Schrodinger's Box4 screens
Parallel4 screens

Verdict

The call

The clearest difference is rating: Schrodinger's Box at 5.0 against Parallel's 4.5. On price, review sentiment, ratings volume and update cadence 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. Schrodinger's Box sells 1 one-off in-app purchase and Parallel sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Schrodinger's Box holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on October 24, 2026.

Scorecard1 real difference · 9 level
Schrodinger's Box versus Parallel: the parameters behind the verdict, then further details
ParameterSchrodinger's BoxParallel
PriceFreeFree
Rating5.0 (5 ratings) — better4.5 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings5 — better2
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS17.6 — better18.0
Further details — not scored
Size4 MB5 MB
Age rating12+4+
DeveloperJustin NeumanAnatol Knotek

Customer experience

Schrodinger's Box

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Parallel

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Schrodinger's Box

One-time1
  • Pro Upgrade – Lifetime Access$4.99
4 purchases

Parallel

One-time4
  • Painters & Sculptors XL$1.99
  • Buildings XL$1.99
  • Science & Technology XL$1.99
Show 1 more
  • Parallel Pro$3.99

Questions

Is Schrodinger's Box free?
Schrodinger's Box is free to download, with in-app purchases available.
Is Parallel free?
Parallel is free to download, with in-app purchases available.
Which has better reviews, Schrodinger's Box or Parallel?
Schrodinger's Box is rated higher. Schrodinger's Box averages 5.0 out of 5 from 5 ratings, while Parallel averages 4.5 from 2 ratings.
Do Schrodinger's Box or Parallel have ads?
Neither Schrodinger's Box nor Parallel shows ads.
Which is updated more often, Schrodinger's Box or Parallel?
Schrodinger's Box ships an update every 3 weeks, and Parallel every 3 weeks. Most recently, Schrodinger's Box was updated on October 24, 2026 and Parallel on October 24, 2026.

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