Comparison

Deja vs LumQuant

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

Head to head
About

Deja

Features
Read full description

Have you ever looked at a stock chart and thought, "I have seen this pattern before"? Deja finds historical charts that match your current pattern and shows you what happened next. Deja scans thousands of historical price patterns across stocks and crypto to find the ones most similar to the chart you are looking at right now. Then it tells you, with real statistics, how those similar patterns played out -- whether prices went up or down, and by how much. CORE FEATURES -- Pattern Matching Engine Deja identifies similar historical chart patterns across NASDAQ, NYSE, and crypto markets. Each match includes a similarity score so you know how closely it resembles the current chart. -- Statistical Predictions For each set of matched patterns, Deja calculates 1-day and 5-day predictions including win rate, maximum gain, maximum loss, IQR range, and median outcomes. No guesswork -- just data. -- Interactive Comparison Charts Overlay the current chart with any historical match to visually compare how patterns align. Switch between line and OHLC views. See exactly where the "similar part" is and what happened after. -- Customizable TP/SL Levels Set your Take Profit and Stop Loss using the metric that fits your trading style -- Max, Min, IQR bounds, or Median values. The chart updates in real time to show your selected levels. -- Live Price Data Real-time price updates via WebSocket with historical data merged seamlessly. Watch the current pattern develop as it happens. -- Multi-Market Coverage Browse and analyze charts from NASDAQ, NYSE, NYSE-ARCA, and major cryptocurrency pairs. HOW TO USE 1. Select a market category and symbol 2. View the live candlestick chart with prediction overlays 3. Scroll down to see the full statistical analysis 4. Explore individual similar chart matches 5. Use the data to inform your trading decisions Deja does not predict the future. It shows you what historically happened when similar patterns appeared. Use this information as one input in your trading analysis. Download Deja and start making data-driven trading decisions.

About

LumQuant

Read full description

LumQuant is an AI-powered market research and technical analysis tool designed to help users understand financial market information more clearly. Unlike general-purpose AI workflows that rely only on chart screenshots, LumQuant can provide AI systems with current or near-real-time structured market data, multiple timeframes, candlestick information, and common technical indicators to generate more complete market research insights. Key features • Market overview: View current prices and market changes across supported instruments. • Multi-timeframe charts: Explore trends, structure, and price action across different timeframes. • Technical indicators: Review common indicators such as RSI, MACD, and moving averages. • Market structure recognition: Better understand trends, support and resistance, and common chart patterns. • AI market analysis: Generate market context and scenario analysis using structured market data. • AI chat: Ask follow-up questions about market data and technical analysis. LumQuant does not connect to users’ brokerage or trading accounts, request trading-platform credentials or API keys, execute trades, or hold or manage user funds. Important notice Market data, technical indicators, and AI-generated content in this app are provided for informational, educational, market-research, and general analytical purposes only. They do not constitute personalized investment advice, trading instructions, or a promise of returns. Market data and AI output may be delayed, inaccurate, or incomplete. Users should independently verify Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Deja3 screens
LumQuant3 screens

Verdict

The call

The clearest difference is in-app purchases: Deja at none against LumQuant's 9. Deja also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price 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. LumQuant sells 9 in-app purchases, starting at $19.99 per month. Deja asks for nothing beyond the download.

Scorecard3 real differences · 3 level
Deja versus LumQuant: the parameters behind the verdict, then further details
ParameterDejaLumQuant
PriceFreeFree
Update frequencyEvery 4 days—
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size73 MB4 MB
Age rating4+17+
DeveloperJUHWAN LEE宠 李

In-app purchases

None

Deja

No in-app purchases

9 purchases

LumQuant

Subscriptions6
  • LumQuant Basic Monthly$19.991 Month
  • LumQuant Pro Monthly$39.991 Month
  • LumQuant Ultra Monthly$79.991 Month
Show 3 more
  • LumQuant Basic Yearly$149.991 Year
  • LumQuant Pro Yearly$299.991 Year
  • LumQuant Ultra Yearly$599.991 Year
One-time3
  • 100 Credits$9.99
  • 500 Credits$39.99
  • 2000 Credits$119.99

Questions

Is Deja free?
Deja is free to download, with no in-app purchases.
Is LumQuant free?
LumQuant is free to download, with in-app purchases available.
Do Deja or LumQuant have ads?
Neither Deja nor LumQuant shows ads.

Other comparisons