# ACAAN Trainer vs Ruler with Caliper, Protractor

The clearest difference is review sentiment: ACAAN Trainer at 50% against Ruler with Caliper, Protractor's 0%. ACAAN Trainer also leads on ads (none vs shown) and update cadence (every 2 months vs every 28 months). Ruler with Caliper, Protractor's advantage is price (Free vs $3.99). On in-app purchases, monetization model, device support and iOS requirement there is nothing between them.

Ruler with Caliper, Protractor is free to download; ACAAN Trainer costs $3.99 up front. ACAAN Trainer sells 2 in-app purchases, starting at $3.99 per 3 months and Ruler with Caliper, Protractor sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ACAAN Trainer ships an update every 2 months, Ruler with Caliper, Protractor every 28 months. The most recent releases landed on October 16, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | ACAAN Trainer | Ruler with Caliper, Protractor |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/acaan-trainer/id573505025/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 28 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 6 MB | 6 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ralph Cos](https://appshunter.io/developer/573505028) | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) |

## What reviewers say

### ACAAN Trainer

[App page](https://appshunter.io/ios/app/acaan-trainer/id573505025)

This app is a technical learning tool for close-up magicians, focusing on the ACAAN plot. It offers interactive practice with various approaches and a streamlined interface for honing card magic skills.

**Highlights:** ACAAN plot training, Virtual spectator concept, Classic and custom approaches, Interactive analyser, Display and whisper modes, Streamlined interface

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Months Subscription | $3.99 | per 3 months |
| Annual Subscription | $4.99 | per year |


### Ruler with Caliper, Protractor

[App page](https://appshunter.io/ios/app/ruler-with-caliper-protractor/id1368462815)

This app transforms your device into a precise digital measuring tool. It offers accurate measurements for various objects and distances using your camera, with multiple units and offline functionality.

**Highlights:** Accurate measurements via camera, Measure small objects to large distances, User-friendly interface, Multiple measurement units (inches, cm), Virtual ruler on screen, Save and share measurements, Offline accessibility

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Yearly | $39.99 | per year |
| Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is ACAAN Trainer free?

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

### Is Ruler with Caliper, Protractor free?

Ruler with Caliper, Protractor is free to download, with in-app purchases available.

### Do ACAAN Trainer or Ruler with Caliper, Protractor have ads?

Ruler with Caliper, Protractor shows ads; ACAAN Trainer does not.

### Which is updated more often, ACAAN Trainer or Ruler with Caliper, Protractor?

ACAAN Trainer ships an update every 2 months, and Ruler with Caliper, Protractor every 28 months. Most recently, ACAAN Trainer was updated on October 16, 2026 and Ruler with Caliper, Protractor on October 22, 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.*