# [020] Companion tools for prediction markets (Polymarket / Kalshi): tracking public wallets, event alerts, cross-platform odds, subscription. The platforms are breaking out, but there's only one new tool making money > Source: https://stringers.io/en/o/020.html (Stringers / 什么值得做, generated 2026-11-08) > Stringers answers one question every day: what small product can one or two people build in a few months and actually make money from. Numbers come from 15 databases we collect daily, each with source and date. > For agents: these verdicts and the underlying databases (verified revenue, App Store / Google Play charts, ad libraries, GitHub, Product Hunt…) are queryable live over MCP — tools today / hot / products / directions / direction / data. Setup: https://github.com/komako-workshop/stringers (the user logs in at stringers.io → "配置 agent" to get a personal URL). Site index: https://stringers.io/llms.txt > Kalshi and Polymarket are in a user boom in the US, and the platforms don't themselves offer "see how others are betting" [Home](https://stringers.io/worth/) / [020] # Add-on tools for prediction markets (Polymarket / Kalshi): track public wallets, event alerts, cross-platform odds, subscription. The platforms are booming, but only one new tool is making money Watching Trackable · a tool that lives in a gap left by big platforms First spotted 2026-11-01 · Last updated 2026-11-03 Status Watching (single sample; upgrades if a second new tool gets into the us Finance Top Grossing top 100) Why now, and how long the window lasts Kalshi and Polymarket are in a user boom in the US, and the platforms don't themselves offer "see how others are betting"; a solo 60-day app made the Finance Top Grossing top 40. The window depends on whether the platforms build wallet leaderboards and copy-trading alerts themselves, and on state-level US regulation; estimate roughly 12 months (inferred). Confidence Low (single sample). What would overturn this: Prediction Radar drops out of the us Finance Top Grossing top 100 within 30 days; or Polymarket or Kalshi officially launches wallet leaderboards and copy-trading alerts. What would upgrade it: a second new tool enters the us Finance Top Grossing top 100, or Prediction Radar enters the us overall Top Grossing chart. ## Evidence Grouped by store. Each group starts with the charts that can be graphed (real curves, data dates below the chart), then the scanner's original notes and source links. ### App Store3 evidence items · 6 products with curves [Prediction Radar](https://apps.apple.com/us/app/prediction-radar/id6798433802) Quad Innovations Inc. App Store · launched 2026-09-02 · US store rating 1,177 · charted in 11-08 of 17 stores Best category chart rank · by store US store Canada Spain Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Lower rank is higher; gaps mean it wasn't charted that day Ratings count · US store Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Apple doesn't publish download counts; rating growth is a proxy for downloads. [Kalshi: Trade Sports & Events](https://play.google.com/store/apps/details?id=com.kalshi.mobile) KalshiEX LLC Google Play · Launched 2022-10-07 · 11-07 installs 5,179,477 Global cumulative installs Data 2026-10-29 → 2026-11-07 (10 days, 10 observations). Google's detail page only refreshes install counts every other day, so a flat day doesn't mean nobody installed. Ratings (total) Data 2026-10-29 → 2026-11-07 (10 days, 10 observations) [Polymarket](https://play.google.com/store/apps/details?id=com.polymarket.android) Polymarket Google Play · Launched 2024-10-04 · 11-07 installs 1,841,760 Global cumulative installs Data 2026-10-29 → 2026-11-07 (10 days, 10 observations). Google's detail page only refreshes install counts every other day, so a flat day doesn't mean nobody installed. Ratings (total) Data 2026-10-29 → 2026-11-07 (10 days, 10 observations) [Pythia: Market AI for Kalshi](https://apps.apple.com/bb/app/pythia-market-ai-for-kalshi/id6776549138) Uladzsislau Luchkouski App Store · debuted 2026-06-16 · Mexico ratings 10 · 11-08 charted in 16 stores Best category chart rank · by store Canada BZ KY Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Lower rank is higher; gaps mean it wasn't charted that day Rating count · Mexico Data 2026-11-07 → 2026-11-08 (2 days, 2 observations). Apple doesn't publish download counts; rating growth is a proxy for downloads. [KLS: Event & Prediction Market](https://apps.apple.com/at/app/kls-event-prediction-market/id6805830625) Voris B.V. App Store · launched 2026-09-04 · Canada rating 7 · charted in 11-08 of 39 stores Best category chart rank · by store Canada Australia Spain Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Lower rank is higher; gaps mean it wasn't charted that day Rating count · Canada Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Apple doesn't publish download counts; rating growth is a proxy for downloads. [PolySim: PolyMarket Simulator](https://apps.apple.com/us/app/polysim-polymarket-simulator/id6764646608) Matthew Moffat App Store · launched 2026-05-03 · US store rating 2 · charted in 11-08 of 7 stores Top Paid chart rank · by store PA BY Data 2026-11-02 → 2026-11-06 (5 days, 5 observations). Lower rank is higher; gaps mean it wasn't charted that day Best category chart rank · US store Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Best rank across each day's category charts - App Store (us, 11-02): Prediction Radar (6798433802, Quad Innovations Inc., 1 apps in portfolio, launched 2026-09-02) Finance Top Grossing #38 (10-28 #41 → 10-31 #33 → 11-01 #36 → 11-02 #38), rating 1,001 (10-28 is 899); also Finance Top Grossing #9 in pa, #79 in se, #111 in mx, #113 in es. It tracks the P&L, win rate, and positions of public Polymarket wallets and pushes alerts on new moves; it doesn't trade. - App Store / Google Play (the platforms themselves, 11-02): Kalshi US-store rating 652,150 (10-28 is 641,723,5 days +10,427), us Finance Top Free #2; Play com.kalshi.mobile 5,119,627 installs, us Finance Top Free #1; Polymarket Play com.polymarket.android 1,827,371 installs. - App Store (all stores, 11-02, looking for a second one in the same category): searching polymarket / kalshi / prediction / whale, only Pythia: Market AI for Kalshi (6776549138, indie, charted in 16 stores, Finance Top Grossing #18,4 by rating count), KLS: Event & Prediction Market (6805830625,4 ratings), and the PolySim simulator (6764646608,2 ratings) came out after 2026-05; the rest are football predictions. No second app has picked up traction yet. ### Google Play1 evidence items · 1 products with curves [Prediction Radar](https://play.google.com/store/apps/details?id=com.predictionradar.app) Prediction Radar LLC Google Play · Launched 2026-09-24 · 11-07 installs 10,460 Global cumulative installs Data 2026-10-29 → 2026-11-07 (10 days, 10 observations). Google's detail page only refreshes install counts every other day, so a flat day doesn't mean nobody installed. Ratings (total) Data 2026-10-29 → 2026-11-07 (10 days, 10 observations) - Google Play (11-02): Prediction Radar com.predictionradar.app (on Play since 09-24) has 7,241 installs, 233 ratings, us Finance Top Grossing #46. ### For-sale listings1 evidence items - For sale (Acquire mebq376iot, live since 11-01): one person, 8 months, Kalshi + Polymarket odds, AI predictions, news aggregation, 51 customers, trailing-twelve-month revenue $10,500, profit $8,900, last month $1,500, asking $29,926. This is the floor price for the niche. ### Standalone product revenue (TrustMRR) 1 pieces of evidence - indie (as of 11-01): Alphascope (prediction-market tool, sold on Whop) 30 days $1,908 (−34.6%), MRR $498,40 from subscriptions, 7–October monthly $1.6–2.9k, listed at $40,000. ### Meta Ad Library1 evidence items - Meta Ad Library (11-02): searching polymarket returns nothing; searching prediction radar doesn't return this app either. ## Already doing it Prediction Radar (iOS + Play), Pythia, KLS, PolySim, Alphascope, the listed mebq376iot; on the options side, the long-running Unusual Whales. ## The hardest step Earn user trust without touching regulation. Users expect "copy trades that win," and negative reviews come fast ("a 1-star and a 5-star trader are no different," "cancelled during the trial and still got charged"); platform API fees or bans, and shifting state attitudes toward prediction markets, are all moving targets. ## Who it's for Individual developers who understand on-chain data or the Kalshi API; subscriptions; localization outside the US is still untouched (Polymarket is legal in Europe and Asia, but Curie only charts in the us). ## Should every product builder know this? No. ## Change log 2026-11-03 Prediction Radar's first move into a second major market: es Finance Top Grossing #22 (on the threshold list "first entry into a major-market top grossing chart"), gb #75; us Finance Top Grossing 38→41, rating 1,024. Still a single sample, but it's expanding across language stores. Not upgrading. 2026-11-02 Backfill check: Prediction Radar us Finance Top Grossing #36→#38, rating 982→1,001; Kalshi 10-28 to 11-02 new ratings 10,427; the full database search turned up two new competitors, Pythia and KLS, each with only 4 ratings; Alphascope 30 days −34.6%, listed for sale. 2026-11-01 First recorded (backfill: from App Store New Opportunities §1.3, Google Play New Opportunities §1.10, Stringers §3.6, For Sale Listings §2.7; data as of 2026-11-01 / 11-02). Original: Scanner opportunity library #020 (updated daily, 06:00); this page was generated on the 2026-11-08 edition.