# Predictable Español vs Respiration ID

The clearest difference is price: Respiration ID at $4.99 against Predictable Español's $159.99. Respiration ID also leads on in-app purchases (none vs 2) and iOS requirement (11.0 vs 15.5). Predictable Español's advantage is update cadence (every 3 months vs every 47 months). On ads and device support there is nothing between them.

Predictable Español costs $159.99 and Respiration ID $4.99 up front. Predictable Español sells 2 in-app purchases, starting at $9.99 per month. Respiration ID asks for nothing beyond the download.

Predictable Español ships an update every 3 months, Respiration ID every 47 months. The most recent releases landed on September 16, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Predictable Español | Respiration ID |
| --- | --- | --- |
| Price | $159.99 | **$4.99** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/respiration-id/id1060166421/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 47 months |
| Monetization | — | Paid |
| Size | 1.7 GB | 35 MB |
| Requires iOS | 15.5 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Prentke Romich Company](https://appshunter.io/developer/474446992) | [Blue Tree Publishing, Inc.](https://appshunter.io/developer/496143325) |

## What reviewers say

### Predictable Español

[App page](https://appshunter.io/ios/app/predictable-espanol/id490990357)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Suscripción mensual | $9.99 | per month |
| Suscripción anual | $99.99 | per year |


### Respiration ID

[App page](https://appshunter.io/ios/app/respiration-id/id1060166421)

Explore the anatomy of respiration with interactive animations and structure identification. Learn about the body, thorax, and lungs through touch-based learning and detailed text. Save and share your discoveries with the built-in drawing and screenshot tools.

**Highlights:** Interactive 3D respiratory anatomy models, Structure identification with text details, Animations of inhalation and exhalation, Larynx movement during breathing, Ribs and diaphragm interaction animation, Alveoli breathing animation, Drawing whiteboard with screenshot functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Predictable Español free?

Predictable Español costs $159.99, and also offers in-app purchases.

### Is Respiration ID free?

Respiration ID costs $4.99, with no in-app purchases.

### Do Predictable Español or Respiration ID have ads?

Neither Predictable Español nor Respiration ID shows ads.

### Which is updated more often, Predictable Español or Respiration ID?

Predictable Español ships an update every 3 months, and Respiration ID every 47 months. Most recently, Predictable Español was updated on September 16, 2026 and Respiration ID on September 8, 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.*