# Carboxylic Acids and Esters vs Morse Code

The clearest difference is price: Morse Code at Free against Carboxylic Acids and Esters's $0.99. Morse Code also leads on in-app purchases (none vs 2) and update cadence (every 19 months vs every 43 months). Carboxylic Acids and Esters's advantage is ads (none vs shown) and rating (5.0 vs 4.6). On device support there is nothing between them.

Morse Code is free to download; Carboxylic Acids and Esters costs $0.99 up front. Carboxylic Acids and Esters sells 2 one-off in-app purchases. Morse Code asks for nothing beyond the download.

Carboxylic Acids and Esters holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Morse Code has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Carboxylic Acids and Esters's written reviews are positive against 83% of Morse Code's.

Carboxylic Acids and Esters ships an update every 43 months, Morse Code every 19 months. The most recent releases landed on October 1, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Carboxylic Acids and Esters | Morse Code |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/carboxylic-acids-and-esters/id837892461/reviews)** | [4.6 (14 ratings)](https://appshunter.io/ios/app/morse-code-learn-and-decode/id6742077740/reviews) |
| Number of ratings | 2 | **14** |
| Positive reviews | **100.0% of reviews** | 83.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 43 months | **Every 19 months** |
| Monetization | Paid | **Ad-supported** |
| Size | 21 MB | 4 MB |
| Requires iOS | **8.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrey Solovyev](https://appshunter.io/developer/655223913) | [Yogesh Dhakal](https://appshunter.io/developer/1793280080) |

## What reviewers say

### Carboxylic Acids and Esters

[App page](https://appshunter.io/ios/app/carboxylic-acids-and-esters/id837892461)

Test your knowledge of carboxylic acids and esters with interactive quizzes. Learn structures, trivial names, and pKa values for 50 important organic compounds. Supports multiple game modes and flashcards for effective learning.

**Highlights:** Learn structures and trivial names, 50 important acids and esters, pKa values included, Spelling quizzes, Multiple-choice questions, Time attack game mode, Flashcards

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | Free | one-time |
| Unlimited Hints | $2.99 | one-time |


### Morse Code

[App page](https://appshunter.io/ios/app/morse-code-learn-and-decode/id6742077740)

Learn and practice Morse code with this app. It offers translation between English and Morse, with output options for sound, vibration, and flashlight. Includes an auto-decode feature and a printable guide.

**Highlights:** Morse code practice section, English to Morse translation, Sound, vibration, and flashlight output, Automatic Morse code decoding, Printable Morse code guide

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

**In-app purchases:** none


## Frequently asked questions

### Is Carboxylic Acids and Esters free?

Carboxylic Acids and Esters costs $0.99, and also offers in-app purchases.

### Is Morse Code free?

Morse Code is free to download, with no in-app purchases.

### Which has better reviews, Carboxylic Acids and Esters or Morse Code?

Carboxylic Acids and Esters is rated higher. Carboxylic Acids and Esters averages 5.0 out of 5 from 2 ratings, while Morse Code averages 4.6 from 14 ratings.

### Do Carboxylic Acids and Esters or Morse Code have ads?

Morse Code shows ads; Carboxylic Acids and Esters does not.

### Which is updated more often, Carboxylic Acids and Esters or Morse Code?

Carboxylic Acids and Esters ships an update every 43 months, and Morse Code every 19 months. Most recently, Carboxylic Acids and Esters was updated on October 1, 2026 and Morse Code on October 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.*