# Dig a Pig vs Functional Groups

The clearest difference is price: Functional Groups at Free against Dig a Pig's $0.99. Functional Groups also leads on update cadence (every 4 months vs every 23 months) and rating (4.9 vs 4.6). Dig a Pig's advantage is in-app purchases (none vs 1) and chart position (#171 vs unranked). On review sentiment, ratings volume, ads and device support there is nothing between them.

Functional Groups is free to download; Dig a Pig costs $0.99 up front. Functional Groups sells 1 one-off in-app purchase. Dig a Pig asks for nothing beyond the download.

Functional Groups holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 37 and 21 respectively. Written reviews point the same way: 94% of Dig a Pig's written reviews are positive against 100% of Functional Groups's.

Dig a Pig ships an update every 23 months, Functional Groups every 4 months. The most recent releases landed on September 22, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Dig a Pig | Functional Groups |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.6 (37 ratings)](https://appshunter.io/ios/app/dig-a-pig/id717348148/reviews) | **[4.9 (21 ratings)](https://appshunter.io/ios/app/functional-groups/id1670252638/reviews)** |
| Number of ratings | **37** | 21 |
| Positive reviews | 93.8% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 4 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#171** | — |
| Size | 290 MB | 17 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Andrew Meyerson](https://appshunter.io/developer/717348151) | [Clarity Applications](https://appshunter.io/developer/1646120472) |

## What reviewers say

### Dig a Pig

[App page](https://appshunter.io/ios/app/dig-a-pig/id717348148)

**Currently charting:** #171 Top Paid · Education (US App Store)

Prepare for your fetal pig practical exam with a comprehensive image gallery and interactive quiz. Study detailed anatomy of fetal pigs, cow eyes, cow hearts, and adult pig organs. Aim for an 'A' grade with this educational tool.

**Highlights:** 217 high-resolution anatomical images, Fetal pig anatomy gallery, Interactive quiz for practice, Includes cow eye and heart images, Includes adult pig kidney and uterus images, Categorized image sections

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

**In-app purchases:** none


### Functional Groups

[App page](https://appshunter.io/ios/app/functional-groups/id1670252638)

Master organic chemistry functional groups through an engaging and interactive learning experience. Ideal for students in introductory or advanced courses, MCAT prep, and A-Level chemistry, this app covers dozens of essential groups with practice modes and progress tracking.

**Highlights:** 25+ basic and advanced functional groups, 300+ organic compounds, Multiple practice modes, Customizable study groups, Personalized review, Reference table and definitions, Progress tracking with achievements

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $9.99 | one-time |


## Frequently asked questions

### Is Dig a Pig free?

Dig a Pig costs $0.99, with no in-app purchases.

### Is Functional Groups free?

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

### Which has better reviews, Dig a Pig or Functional Groups?

Functional Groups is rated higher. Dig a Pig averages 4.6 out of 5 from 37 ratings, while Functional Groups averages 4.9 from 21 ratings.

### Do Dig a Pig or Functional Groups have ads?

Neither Dig a Pig nor Functional Groups shows ads.

### Which is updated more often, Dig a Pig or Functional Groups?

Dig a Pig ships an update every 23 months, and Functional Groups every 4 months. Most recently, Dig a Pig was updated on September 22, 2026 and Functional Groups on September 13, 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.*