# Probability Paradox Lab vs TradeMind

The clearest difference is ads: TradeMind at none against Probability Paradox Lab's shown. TradeMind also leads on update cadence (every 3 days vs every 4 weeks). Probability Paradox Lab's advantage is iOS requirement (16.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Probability Paradox Lab sells 1 one-off in-app purchase and TradeMind sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Probability Paradox Lab ships an update every 4 weeks, TradeMind every 3 days. The most recent releases landed on September 21, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Probability Paradox Lab | TradeMind |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 weeks | **Every 3 days** |
| Size | 13 MB | 32 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 12+ |
| Developer | [Non Kudo](https://appshunter.io/developer/1890455917) | [Yue Ju](https://appshunter.io/developer/6787108660) |

## What reviewers say

### Probability Paradox Lab

[App page](https://appshunter.io/ios/app/probability-paradox-lab/id6782385785)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock Pack | $0.99 | one-time |


### TradeMind

[App page](https://appshunter.io/ios/app/trademind-quant-math-prep/id6787108658)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TradeMind Pro Monthly | $9.99 | per month |
| TradeMind Pro Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Probability Paradox Lab free?

Probability Paradox Lab is free to download, with in-app purchases available.

### Is TradeMind free?

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

### Do Probability Paradox Lab or TradeMind have ads?

Probability Paradox Lab shows ads; TradeMind does not.

### Which is updated more often, Probability Paradox Lab or TradeMind?

Probability Paradox Lab ships an update every 4 weeks, and TradeMind every 3 days. Most recently, Probability Paradox Lab was updated on September 21, 2026 and TradeMind on September 19, 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.*