Comparison

PredictAlpha vs Proofline

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

Head to head
About

PredictAlpha

Gain an edge in prediction markets with this app. Analyze market data, track top traders, and receive smart alerts for trading opportunities. Visualize market relationships and manage your portfolio.

Highlights
  • Market discovery with Alpha Score
  • Signal digest for trending markets
  • Top trader leaderboard and profiles
  • Smart alerts for trading opportunities
  • Market constellation visualization
  • Portfolio tracking and PnL analysis
Features
Read full description

PredictMarket Alpha — Prediction Market Intelligence Your edge in prediction markets. Analyze, track, and compete. PredictMarket Alpha is a powerful iOS companion that transforms raw prediction market data into actionable intelligence. Whether you're tracking top traders, modeling market scenarios, or measuring your own forecasting accuracy — PredictMarket Alpha gives you the tools the pros use. --- Key Features Market Discovery & Alpha Scoring Browse thousands of prediction markets sorted by a proprietary Alpha Score that weighs momentum, participation, liquidity, and divergence — surfacing markets where the opportunity is highest. Filter by category (Politics, Sports, Crypto, Culture, Economics, Tech, Finance) and sort by volume, liquidity, or recency. Signal Digest Your daily briefing in one place — trending Polymarket movers, Kalshi election market spreads, and macro headlines pulled live from SEC and Federal Reserve press releases. See what's moving and why before the crowd catches on. Top Trader Leaderboard & Profiles Track the best traders on Polymarket with filterable rankings by time period and category. Tap any trader to see their full profile — current positions (sortable 8 ways), recent trade activity, portfolio value, win rate, and PnL. Follow the smart money. Smart Alerts Four types of real-time intelligence alerts: - Smart Money — Get notified when top-ranked traders open, close, or change positions - Volume Surge — Detect unusual trading activity spikes with severity ratings - Arbitrage — Spot mispriced markets where YES + NO don't add up, or cross-market contradictions with expected profit calculations - Cascade — See correlated market chains and anticipated ripple effects between related markets Market Constellation & Scenario Lab A force-directed graph visualizes relationships between ~40 trending markets — connected by semantic similarity, price correlation, category, and causal links. Select any market, apply a probability shock, and watch the impact ripple through connected markets. Connect your Polymarket wallet to see projected PnL impact on your actual positions. Portfolio Tracking Link your predict market app profile to view your portfolio at a glance — total value, unrealized PnL, open position count, and YES/NO exposure breakdown. Drill into individual positions with entry price, current price, and live profit/loss tracking. Deep Market Detail Tap any market to see full analytics — current probability, 24h/1wk/1mo volume, liquidity, bid-ask spread, top YES and NO holders, recent trades, and orderbook summary. Alpha score breakdowns show exactly what's driving the opportunity. --- PredictMarket Alpha is an independent app and is not affiliated with or endorsed by companies such as Polymarket or Kalshi.

About

Proofline

Features
Read full description

Proofline is a trading journal for recording decisions, risk, and results. Use Proofline to: • Record the setup, entry, stop, TP levels, position size, notes, charts, and TradingView links • Keep draft, open, and closed trades in one journal • Calculate position size from account balance, stop distance, and risk per trade • Review P&L, win rate, profit factor, drawdown, R multiples, sessions, symbols, and daily results • Compare planned targets with actual exits and review written rule breaks • Import closed trades from supported brokers, exchanges, and MetaTrader reports • Share a read-only trade link Proofline supports stocks, forex, futures, options, indices, and crypto journals. Proofline does not provide investment advice, trading signals, brokerage services, or guaranteed results. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

PredictAlpha4 screens
Proofline4 screens

Verdict

The call

The clearest difference is in-app purchases: PredictAlpha at none against Proofline's 2. Proofline's advantage is update cadence (every 4 days vs every 2 months). On price, ads, device support and iOS requirement 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. Proofline sells 2 in-app purchases, starting at $9.99 per month. PredictAlpha asks for nothing beyond the download.

UpkeepUpdate frequency

PredictAlpha ships an update every 2 months, Proofline every 4 days. The most recent releases landed on June 28, 2026 and September 9, 2026 respectively.

Scorecard2 real differences · 7 level
PredictAlpha versus Proofline: the parameters behind the verdict, then further details
ParameterPredictAlphaProofline
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size15 MB89 MB
Age rating4+4+
DeveloperVia Labs LLCNaile Nursen Celik

In-app purchases

None

PredictAlpha

No in-app purchases

2 purchases

Proofline

Subscriptions2
  • Proofline Pro Monthly14 Days trial$9.991 Month
  • Proofline Pro Annual14 Days trial$99.991 Year

Questions

Is PredictAlpha free?
PredictAlpha is free to download, with no in-app purchases.
Is Proofline free?
Proofline is free to download, with in-app purchases available.
Do PredictAlpha or Proofline have ads?
Neither PredictAlpha nor Proofline shows ads.
Which is updated more often, PredictAlpha or Proofline?
PredictAlpha ships an update every 2 months, and Proofline every 4 days. Most recently, PredictAlpha was updated on June 28, 2026 and Proofline on September 9, 2026.

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