Comparison

Positional Encoding vs Q

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

Head to head
About

Positional Encoding

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This is an educational App for readers interested in the sin/cos encoding of the token positions in large language models (LLM). Play with this App to acquire a deeper understanding of the positional encoder as it was described in the famous *Attention is All You Need* paper. In particular the App shows how the correlation between two positional vectors depends only on the distance between the corresponding two integer position.

About

Q

Features
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Most "quantum finance apps" confidently predict. Q-Alpha confidently doesn’t know. When you tap an asset symbol, no chatbot draws a confident-looking line β€” your device runs quantum-random scenario math, computes a full distribution of possible paths, and shows you the cloud. The shape, not a point. Uncertainty, made calm. New β€” the Quantum Engine. Generate randomness from a genuine 127-qubit quantum circuit, and run QAOA portfolio selection: a real quantum algorithm, run on a high-performance simulator β€” not a quantum computer, and never a prediction. The algorithm is real; the honesty is the point. Every AI scenario interpretation passes an 8-language honesty filter before you read it. Words like "predict / forecast / recommend / guaranteed return / buy this" are pre-blocked across English, Korean, Japanese, Chinese (Simplified and Traditional), German, French, and Spanish. Every response must include a "this is scenario exploration, not investment advice" disclaimer. When the model tries to cross the line, the response simply doesn’t show β€” that’s a feature, not a bug. Works on the subway. Works on a flight. Works in a cafΓ© with no Wi-Fi. AI scenario interpretation runs on-device β€” your asset symbols, portfolio composition, and questions never leave your hardware. (Market prices need the network, since they’re public data, but your interpretation never travels.) A five-axis risk radar (volatility Β· momentum Β· liquidity Β· trend Β· profitability) shows where a position is exposed β€” and honestly says "no single axis dominates" when that’s the truth, instead of pointing a misleading needle. A distribution cloud replaces the single-line chart with the actual shape of possibility. A living disclaimer ribbon breathes at the bottom of every screen, so the honesty promise is never an afterthought. And four Siri shortcuts let you scan suspicious "quantum" marketing copy in seconds β€” paste any sales pitch, see what survives. Pro: $4.99/month Β· $29.99/year (~50% off vs monthly) β€” less than one finance book. One purchase covers iPhone, iPad, and Mac (Universal Purchase). The free tier includes the core risk index, ten analyses per minute, the Fear & Greed view, and the Financial Literacy Hub β€” generously enough that "I’m just here to peek" is a real option. Built by one engineer, not a marketing department. The design system has zero red/green/gold (no emotional financial coding). The vocabulary has zero "predict / forecast / guaranteed return." Simulation is named as simulation. Quantum hardware names (IBM, IonQ, Rigetti, Google, Microsoft, AWS) appear only for educational comparison β€” no affiliation, no endorsement, no partnership. App Store category: Education. This is not investment advice. Q-Alpha does not recommend any financial product. Q-Alpha does not guarantee any return. Every output is a mathematical scenario exploration. Every financial decision remains entirely the user’s responsibility. Eight languages, full parity β€” disclaimers and marketing translated at the same quality. Promises translated as carefully as headlines. Calm. Honest. Distribution-first. Quantum, proudly uncertain. Terms of Use: https://swiftquantum.tech/terms/ Β· Privacy Policy: https://swiftquantum.tech/privacy/

Screenshots

Positional Encoding2 screens
Q4 screens

Verdict

The call

The clearest difference is in-app purchases: Positional Encoding at none against Q's 3. Positional Encoding also leads on iOS requirement (18.5 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Q sells 3 in-app purchases, starting at $4.99 per month. Positional Encoding asks for nothing beyond the download.

UpkeepUpdate frequency

Positional Encoding ships an update monthly, Q every 5 weeks. The most recent releases landed on September 26, 2026 and September 18, 2026 respectively.

Scorecard2 real differences Β· 4 level
Positional Encoding versus Q: the parameters behind the verdict, then further details
ParameterPositional EncodingQ
PriceFreeFree
Update frequencyMonthly β€” betterEvery 5 weeks
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, MaciPhone, iPad, Mac
Requires iOS18.5 β€” better26.0
Further details β€” not scored
Size2 MB8 MB
Age rating4+4+
Developercarl nohreEUNMIN PARK

In-app purchases

None

Positional Encoding

No in-app purchases

3 purchases

Q

Subscriptions2
  • Q-Alpha Pro (Monthly)$4.991 Month
  • Q-Alpha Pro (Yearly)$29.991 Year
One-time1
  • Q-Alpha Learner Lifetime$49.99

Questions

Is Positional Encoding free?
Positional Encoding is free to download, with no in-app purchases.
Is Q free?
Q is free to download, with in-app purchases available.
Do Positional Encoding or Q have ads?
Neither Positional Encoding nor Q shows ads.
Which is updated more often, Positional Encoding or Q?
Positional Encoding ships an update monthly, and Q every 5 weeks. Most recently, Positional Encoding was updated on September 26, 2026 and Q on September 18, 2026.

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