# CAPC Internal Parasites ID vs Codon One

The clearest difference is rating: Codon One at 4.5 against CAPC Internal Parasites ID's 3.3. Codon One also leads on update cadence (every 3 weeks vs every 15 months) and review sentiment (76% vs 50%). CAPC Internal Parasites ID's advantage is in-app purchases (none vs 7) and iOS requirement (12.0 vs 15.6). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Codon One sells 7 one-off in-app purchases. CAPC Internal Parasites ID asks for nothing beyond the download.

Codon One holds the better App Store score, 4.5 against 3.3. Both are backed by a comparable volume of ratings — 40 and 25 respectively. Written reviews point the same way: 50% of CAPC Internal Parasites ID's written reviews are positive against 76% of Codon One's.

CAPC Internal Parasites ID ships an update every 15 months, Codon One every 3 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | CAPC Internal Parasites ID | Codon One |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (40 ratings)](https://appshunter.io/ios/app/capc-internal-parasites-id/id1370436320/reviews) | **[4.5 (25 ratings)](https://appshunter.io/ios/app/codon-one-biology-study/id1517313390/reviews)** |
| Number of ratings | **40** | 25 |
| Positive reviews | 50.0% of reviews | **76.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 106 MB | 277 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Company: Companion Animal Parasite Council, Inc](https://appshunter.io/developer/797464509) | [Daniel Gebert](https://appshunter.io/developer/1517313389) |

## What reviewers say

### CAPC Internal Parasites ID

[App page](https://appshunter.io/ios/app/capc-internal-parasites-id/id1370436320)

This app aids in the microscopic identification of fecal parasites for veterinary professionals and students. It features a collection of approximately 100 internal parasites found in various animals, with interactive flashcards for study and review.

**Highlights:** Microscopic parasite identification, Study by species, Random or common-to-least common study modes, Microscopic images with answers, Audio pronunciation of Latin names, Detailed parasite information

**Features:** macOS Compatibility

**In-app purchases:** none


### Codon One

[App page](https://appshunter.io/ios/app/codon-one-biology-study/id1517313390)

Master molecular biology, genetics, evolution, and life chemistry through interactive modules and quizzes. Explore essential concepts with clear diagrams and concise explanations. Includes helpful tools for sequence analysis and genetic code reference.

**Highlights:** Interactive learning modules, Quick quizzes for comprehension, Clear diagrams and plain language, Molecule reference guide, Sequence analysis tools, Genetic code exploration

**Features:** Family Sharing, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Module 2: Genetics | Free | one-time |
| Module 1: Chemistry of Life | Free | one-time |
| Module 3: Evolution | $2.99 | one-time |
| Module 4: Science History | $2.99 | one-time |
| Module 5: Cell Biology | $2.99 | one-time |
| Module 6: Development | $2.99 | one-time |
| Unlock All | $8.99 | one-time |


## Frequently asked questions

### Is CAPC Internal Parasites ID free?

CAPC Internal Parasites ID is free to download, with no in-app purchases.

### Is Codon One free?

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

### Which has better reviews, CAPC Internal Parasites ID or Codon One?

Codon One is rated higher. CAPC Internal Parasites ID averages 3.3 out of 5 from 40 ratings, while Codon One averages 4.5 from 25 ratings.

### Do CAPC Internal Parasites ID or Codon One have ads?

Neither CAPC Internal Parasites ID nor Codon One shows ads.

### Which is updated more often, CAPC Internal Parasites ID or Codon One?

CAPC Internal Parasites ID ships an update every 15 months, and Codon One every 3 weeks. Most recently, CAPC Internal Parasites ID was updated on November 2, 2026 and Codon One on November 3, 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.*