Comparison

MarketSim vs Axiom Trading

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

Head to head
About

MarketSim

Learn about the stock market and test trading strategies with a virtual stock game. Start with $10,000 virtual cash and place unlimited trades using live quotes and historical data. Monitor your portfolio with a beautiful and simple interface.

Highlights
  • Virtual stock market simulation
  • Unlimited trading with $10,000 virtual cash
  • Over 5000 tradeable symbols
  • Live stock quotes and historical data
  • Easy portfolio monitoring
  • Beautiful and simple design
Read full description

Real markets. Play money. Start with $10,000 in virtual cash and trade real stocks at real prices. Build a portfolio, try out an idea, and see how it does without risking any real money. TRADING • Buy and sell stocks with virtual cash at real market prices. • Trade by dollar amount or number of shares, including fractional shares. • Orders placed while the market is closed fill at the next open. • See every order you've placed in your order history. RESEARCH • Search for companies by name or ticker. • Browse the day's most active stocks, top gainers, and top losers. • View price charts, company profiles, and key stats. • Add stocks to your watchlist to keep an eye on them. YOUR PORTFOLIO • Follow your portfolio's value over time. • See shares, average cost, and total return for each holding. • See how each position contributes to your portfolio. • Dividends are paid and stock splits are applied automatically. MARKETSIM PREMIUM • Up to 10 portfolios, each with its own cash, holdings, and history. • Pick any starting balance from $1 to $1 billion for new portfolios. • Refresh quotes anytime with no cooldown. • No ads. MarketSim is a simulator for learning and entertainment. All trades, balances, and returns are simulated. Virtual cash has no monetary value and cannot be withdrawn. Nothing in the app is investment advice. Market data may be delayed or inaccurate, and simulated performance does not predict real investment results. Premium is an optional subscription that renews yearly until canceled. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://thirdlinellc.com/#privacy-policy

About

Axiom Trading

This app connects to your brokerage account to provide AI-driven trading signals. Receive notifications for potential trades with detailed reasoning and manage risk with automated stop-losses. Practice with simulated funds before committing real capital.

Highlights
  • AI market scanning
  • User-approved trade signals
  • Automated stop-losses
  • Paper trading mode
  • Transparent trade reasoning
  • Full trading history
Features
Read full description

Axiom connects to your own Alpaca brokerage account and runs an AI signal engine that scans the market all day. Nothing is bought without you. Every pick arrives as a notification with the reasoning behind it — symbol, size, entry price and stop — and waits for your decision. Swipe right to approve, left to skip. • Paper by default. Practise with simulated money before anything real is at risk. • A stop on every position. Each position opens with a stop-loss attached, and protective exits can sell automatically to manage risk. • Your brokerage, your money. Axiom never holds funds. Orders go to your own Alpaca account, and you can disconnect at any time. • Transparent reasoning. See why a pick was proposed, not just what was proposed. • Full history. Every signal, fill and exit is logged and reviewable. • Season pass and leaderboard. Earn XP for using Axiom and climb the board — ranked on activity, never on money. Plans: Signals, Trader and Trader Pro are monthly subscriptions available in the app through Apple. Payment is charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period, and can be managed in your App Store account settings. Terms of Use: https://axiomautotrade.com/legal/terms Privacy Policy: https://axiomautotrade.com/legal/privacy Axiom is a software tool. It is not a broker-dealer or an investment adviser and does not provide financial advice. Trading involves risk, including the possible loss of principal. Past performance does not guarantee future results.

Screenshots

MarketSim4 screens
Axiom Trading4 screens

Verdict

The call

The clearest difference is monetization model: MarketSim at free with in-app purchases against Axiom Trading's subscription. MarketSim also leads on ratings volume (21K vs 1). Axiom Trading's advantage is ads (none vs shown) and review sentiment (100% vs 67%). On price, in-app purchases, 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. MarketSim sells 2 in-app purchases, starting at $19.99 per year and Axiom Trading sells 3 in-app purchases, starting at $24.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Axiom Trading holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: MarketSim has 21K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of MarketSim's written reviews are positive against 100% of Axiom Trading's.

UpkeepUpdate frequency

MarketSim ships an update every 2 months, Axiom Trading every 2 weeks. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.

Scorecard6 real differences · 4 level
MarketSim versus Axiom Trading: the parameters behind the verdict, then further details
ParameterMarketSimAxiom Trading
PriceFreeFree
Rating4.6 (21K ratings)5.0 (1 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings21K — better1
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad — betteriPhone
Requires iOS18.017.0 — better
Further details — not scored
Size41 MB17 MB
Age rating12+4+
DeveloperThird Line LLCZayd Bari

Customer experience

MarketSim

All ratings20,685 ratings
Positive89.7%
Neutral5.1%
Negative5.2%
Written reviews237 reviews
Positive66.7%
Neutral11.8%
Negative21.5%

Axiom Trading

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

Bugs and requests

MarketSim

Reported bugs

3 issues
  • Stocks randomly showing $0 value
  • Crashes when trying to buy/sell certain stocks
  • Incorrect stock split handling

Requested features

5 requests
  • Add ability to short stocks
  • Implement stock splits and dividends
  • Include more advanced order types
  • Add portfolio tracking and analytics
  • Expand stock selection to include more options

Axiom Trading

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

MarketSim

Subscriptions1
  • MarketSim Premium$19.991 Year
One-time1
  • Remove Ads$2.99
3 purchases

Axiom Trading

Subscriptions3
  • Signals$24.991 Month
  • AutoTrade$74.991 Month
  • Trade Pro$179.991 Month

Questions

Is MarketSim free?
MarketSim is free to download, with in-app purchases available.
Is Axiom Trading free?
Axiom Trading is free to download, with in-app purchases available.
Which has better reviews, MarketSim or Axiom Trading?
Axiom Trading is rated higher. MarketSim averages 4.6 out of 5 from 21K ratings, while Axiom Trading averages 5.0 from 1 ratings.
Do MarketSim or Axiom Trading have ads?
MarketSim shows ads; Axiom Trading does not.
Which is updated more often, MarketSim or Axiom Trading?
MarketSim ships an update every 2 months, and Axiom Trading every 2 weeks. Most recently, MarketSim was updated on November 1, 2026 and Axiom Trading on October 26, 2026.

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