# Stack Trainer vs NoiseMeasurer

The clearest difference is price: NoiseMeasurer at Free against Stack Trainer's $3.99. NoiseMeasurer also leads on iOS requirement (12.0 vs 15.6). Stack Trainer's advantage is update cadence (every 3 months vs every 27 months). On ads, in-app purchases and device support there is nothing between them.

NoiseMeasurer is free to download; Stack Trainer costs $3.99 up front. Stack Trainer sells 2 in-app purchases, starting at $1.99 per 3 months and NoiseMeasurer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Stack Trainer ships an update every 3 months, NoiseMeasurer every 27 months. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Stack Trainer | NoiseMeasurer |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/stack-trainer/id646458442/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 27 months |
| Monetization | Subscription | — |
| Size | 6 MB | 38 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ralph Cos](https://appshunter.io/developer/573505028) | [Aprilred SRL](https://appshunter.io/developer/1057855420) |

## What reviewers say

### Stack Trainer

[App page](https://appshunter.io/ios/app/stack-trainer/id646458442)

This app provides a realistic card deck experience for close-up magicians to train their memory of card stacks. It offers various challenge modes and filters to aid learning and practice, with a focus on a clean, distraction-free interface.

**Highlights:** Realistic card deck simulation, Multiple mnemonic training approaches, Customizable stack filters, Lorrayne's peg words integration, Interactive quick-touch analyzer, Display and whisper modes

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Months Subscription | $1.99 | per 3 months |
| Annual Subscription | $2.99 | per year |


### NoiseMeasurer

[App page](https://appshunter.io/ios/app/noisemeasurer/id1642494779)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $6.99 | one-time |


## Frequently asked questions

### Is Stack Trainer free?

Stack Trainer costs $3.99, and also offers in-app purchases.

### Is NoiseMeasurer free?

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

### Do Stack Trainer or NoiseMeasurer have ads?

Neither Stack Trainer nor NoiseMeasurer shows ads.

### Which is updated more often, Stack Trainer or NoiseMeasurer?

Stack Trainer ships an update every 3 months, and NoiseMeasurer every 27 months. Most recently, Stack Trainer was updated on October 7, 2026 and NoiseMeasurer on October 1, 2026.

---

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