# Smart Printer－PDF Scanner vs Martingale Strategy

The clearest difference is in-app purchases: Martingale Strategy at none against Smart Printer－PDF Scanner's 2. Smart Printer－PDF Scanner's advantage is ads (none vs shown) and device support (3 vs 1). On price and iOS requirement there is nothing between them.

Both are free to download. Smart Printer－PDF Scanner sells 2 in-app purchases, starting at $4.99 per month. Martingale Strategy asks for nothing beyond the download.

## The numbers

| Metric | Smart Printer－PDF Scanner | Martingale Strategy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/martingale-strategy/id6751220278/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | — |
| Monetization | — | Ad-supported |
| Size | 9 MB | 6 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ravi chandran M](https://appshunter.io/developer/1756258598) | [Kevin Tang](https://appshunter.io/developer/1780758221) |

## What reviewers say

### Smart Printer－PDF Scanner

[App page](https://appshunter.io/ios/app/smart-printerpdf-scanner/id6736524560)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly plan | $4.99 | per month |
| Annual Plan | $14.99 | per year |


### Martingale Strategy

[App page](https://appshunter.io/ios/app/martingale-strategy/id6751220278)

This app calculates, simulates, and analyzes outcomes for the Martingale betting system. It helps users understand risk of ruin, maximum bet size, and bankroll longevity through detailed simulations and visualizations. Ideal for educational purposes and exploring probability.

**Highlights:** Risk of ruin calculator, Bet size simulations, Preset game probabilities, Cumulative profit/loss graphs, Written result explanations, Probability and statistics analysis

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart Printer－PDF Scanner free?

Smart Printer－PDF Scanner is free to download, with in-app purchases available.

### Is Martingale Strategy free?

Martingale Strategy is free to download, with no in-app purchases.

### Do Smart Printer－PDF Scanner or Martingale Strategy have ads?

Martingale Strategy shows ads; Smart Printer－PDF Scanner does not.

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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.*