# ReTrader vs Zetamac Arithmetic Practice

The clearest difference is rating: Zetamac Arithmetic Practice at 4.7 against ReTrader's 3.0. Zetamac Arithmetic Practice also leads on in-app purchases (none vs 10) and update cadence (daily vs every 2 months). ReTrader's advantage is iOS requirement (13.0 vs 17.5). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. ReTrader sells 10 one-off in-app purchases. Zetamac Arithmetic Practice asks for nothing beyond the download.

Zetamac Arithmetic Practice holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Zetamac Arithmetic Practice has 18 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 82% and 82% positive.

ReTrader ships an update every 2 months, Zetamac Arithmetic Practice daily. The most recent releases landed on July 26, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | ReTrader | Zetamac Arithmetic Practice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/retrader/id913146489/reviews) | **[4.7 (18 ratings)](https://appshunter.io/ios/app/zetamac-arithmetic-practice/id6737153617/reviews)** |
| Number of ratings | 2 | **18** |
| Positive reviews | 81.8% of reviews | **82.4% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 36 MB | 1 MB |
| Requires iOS | **13.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fintratech Limited](https://appshunter.io/developer/913146492) | [Joseph Ma](https://appshunter.io/developer/1774979062) |

## What reviewers say

### ReTrader

[App page](https://appshunter.io/ios/app/retrader/id913146489)

Simulate trading major historical financial events to understand market movements. Engage in short trading scenarios, compete on leaderboards, and gain insights from experienced traders. Subscribe for weekly analysis and mini-games.

**Highlights:** Trade historical financial events, Simulate market movements, Analyze profit/loss, Global trading competitions, Weekly analysis subscriptions, Leaderboard rankings

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ECB Interest Rate 2013 | $0.99 | one-time |
| Fiscal Cliff 2012 | $0.99 | one-time |
| Taper Tantrum 2013 | $0.99 | one-time |
| Flash Move 2010 - Available Soon | $0.99 | one-time |
| Biggest equity move of 2014 | $0.99 | one-time |
| Swiss Remove FX Floor: EURUSD | $0.99 | one-time |
| Swiss Remove FX Floor: GOLD | $0.99 | one-time |
| Swiss Remove FX Floor: Swiss Stocks | $0.99 | one-time |
| Russia and ECB - Sep 2014 - Dax | $0.99 | one-time |
| 2 Month Subscription | $14.99 | one-time |


### Zetamac Arithmetic Practice

[App page](https://appshunter.io/ios/app/zetamac-arithmetic-practice/id6737153617)

This app offers mental math practice tailored for quantitative finance professionals. It focuses on improving calculation speed and accuracy for complex numerical problems.

**Highlights:** Mental math practice, Quantitative finance focus, Calculation speed improvement, Accuracy enhancement, Numerical problem solving

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

**In-app purchases:** none


## Frequently asked questions

### Is ReTrader free?

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

### Is Zetamac Arithmetic Practice free?

Zetamac Arithmetic Practice is free to download, with no in-app purchases.

### Which has better reviews, ReTrader or Zetamac Arithmetic Practice?

Zetamac Arithmetic Practice is rated higher. ReTrader averages 3.0 out of 5 from 2 ratings, while Zetamac Arithmetic Practice averages 4.7 from 18 ratings.

### Do ReTrader or Zetamac Arithmetic Practice have ads?

Neither ReTrader nor Zetamac Arithmetic Practice shows ads.

### Which is updated more often, ReTrader or Zetamac Arithmetic Practice?

ReTrader ships an update every 2 months, and Zetamac Arithmetic Practice daily. Most recently, ReTrader was updated on July 26, 2026 and Zetamac Arithmetic Practice on September 22, 2026.

---

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