# MarketSim vs Order Book Trainer

The clearest difference is update cadence: Order Book Trainer at every 3 weeks against MarketSim's every 2 months. Order Book Trainer also leads on iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. MarketSim sells 2 in-app purchases, starting at $19.99 per year and Order Book Trainer sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

MarketSim ships an update every 2 months, Order Book Trainer every 3 weeks. The most recent releases landed on October 21, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | MarketSim | Order Book Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (21K ratings)](https://appshunter.io/ios/app/marketsim/id1120425128/reviews)** | — |
| Number of ratings | **21K** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 74 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Third Line LLC](https://appshunter.io/developer/1713032911) | [Syncly Applications](https://appshunter.io/developer/1437712077) |

## What reviewers say

### MarketSim

[App page](https://appshunter.io/ios/app/marketsim/id1120425128)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MarketSim Premium | $19.99 | per year |
| Remove Ads | $2.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🚀 Real-time stock prices
- 💡 Great for learning about stocks
- 🚀 Sleek and intuitive UI

**What reviewers complain about**

- 🐛 Glitches and bugs with stock prices
- 🔍 Lack of detailed stock information
- 🔍 Limited features compared to real trading
- 💰 Too many ads

**Reported bugs**

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

**Requested features**

- 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


### Order Book Trainer

[App page](https://appshunter.io/ios/app/order-book-trainer-level-2/id6785885996)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free Pro – Monthly | $1.99 | per month |
| Ad-Free Pro – Yearly | $15.99 | per year |


## Frequently asked questions

### Is MarketSim free?

MarketSim is free to download, with in-app purchases available.

### Is Order Book Trainer free?

Order Book Trainer is free to download, with in-app purchases available.

### Do MarketSim or Order Book Trainer have ads?

Both MarketSim and Order Book Trainer show ads.

### Which is updated more often, MarketSim or Order Book Trainer?

MarketSim ships an update every 2 months, and Order Book Trainer every 3 weeks. Most recently, MarketSim was updated on October 21, 2026 and Order Book Trainer on October 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*