# Feature Function Class vs Following Picture Directions

The clearest difference is iOS requirement: Following Picture Directions at 15.5 against Feature Function Class's 18.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Feature Function Class | Following Picture Directions |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/feature-function-class/id6755350562/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 101 MB | 67 MB |
| Requires iOS | 18.6 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JudeWorks](https://appshunter.io/developer/1749456254) | [TaskTask LLC](https://appshunter.io/developer/315815752) |

## What reviewers say

### Feature Function Class

[App page](https://appshunter.io/ios/app/feature-function-class/id6755350562)

This visual teaching tool aids educators, therapists, and parents in developing receptive language and categorization skills. It uses a proven methodology to present images and test identification based on features, functions, and classes. The app offers a large image library, smart filtering, and customization options for personalized training.

**Highlights:** 300+ pre-tagged images, Smart filtering by feature, function, or class, Shuffle and Reorder modes for varied practice, Adjustable grid size for difficulty scaling, Save and load custom image sets, Import and tag personal photos, Create custom tags

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

**In-app purchases:** none


### Following Picture Directions

[App page](https://appshunter.io/ios/app/following-picture-directions/id6760626550)

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

**In-app purchases:** none


## Frequently asked questions

### Is Feature Function Class free?

Feature Function Class is free to download, with no in-app purchases.

### Is Following Picture Directions free?

Following Picture Directions is free to download, with no in-app purchases.

### Do Feature Function Class or Following Picture Directions have ads?

Neither Feature Function Class nor Following Picture Directions shows ads.

### Which is updated more often, Feature Function Class or Following Picture Directions?

Feature Function Class ships an update every 2 months, and Following Picture Directions every 2 months. Most recently, Feature Function Class was updated on September 30, 2026 and Following Picture Directions on October 6, 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.*