# Mopiq vs CarbonCalc

The clearest difference is in-app purchases: CarbonCalc at none against Mopiq's 10. CarbonCalc also leads on rating (5.0 vs 4.7). Mopiq's advantage is ratings volume (1.4K vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Mopiq sells 9 in-app purchases, starting at $2.99 per 7 days. CarbonCalc asks for nothing beyond the download.

CarbonCalc holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Mopiq has 1.4K ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Mopiq | CarbonCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (1.4K ratings)](https://appshunter.io/ios/app/mopiq-ai-flashcards-learning/id6443485322/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/carboncalc/id6503479642/reviews)** |
| Number of ratings | **1.4K** | 1 |
| Positive reviews | 69.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 151 MB | 4 MB |
| Requires iOS | **16.0** | 17.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Xavier Pedrals Camprubi](https://appshunter.io/developer/1759046547) | [Steven King](https://appshunter.io/developer/1206448548) |

## What reviewers say

### Mopiq

[App page](https://appshunter.io/ios/app/mopiq-ai-flashcards-learning/id6443485322)

Create and study digital flashcards with a smart learning algorithm designed to enhance long-term knowledge retention. This app helps you organize study decks, customize cards, and access them across devices, making learning efficient and enjoyable.

**Highlights:** Create and study flashcards, Smart organization of decks, Customizable cards, Cross-device access, Spaced repetition learning, Study reminders and progress tracking

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mopiq Flashcards Pro (Weekly) | $2.99 | per 7 days |
| Mopiq Flashcards Pro (Monthly) | $4.99 | per month |
| Mopiq Flashcards Pro (Monthly) | $5.99 | per month |
| Mopiq Flashcards Pro (Yearly) | $19.99 | per year |
| Mopiq Flashcards Pro (Yearly) | $20.00 | per year |
| Mopiq Flashcards Pro (Yearly) | $29.99 | per year |
| Mopiq Flashcards Pro (Yearly) | $29.99 | per year |
| Mopiq Flashcards Pro (Yearly) | $29.99 | per year |
| Mopiq Flashcards Pro (Lifetime) | $74.99 | one-time |

**What reviewers like**

- 🚀 Efficient learning with spaced repetition
- 👍 Clean and user-friendly interface
- 🚀 Effective for vocabulary and language learning
- 💡 Helpful statistics and progress tracking
- 👍 Convenient for studying on-the-go

**What reviewers complain about**

- 🔒 Requires paid subscription for full functionality
- 🐛 Occasional crashes and bugs
- 🐛 Issues with card organization and deck management
- 🐛 Unreliable syncing across devices
- 🐛 Deleted user data and lost progress

**Reported bugs**

- Inability to shuffle cards within a deck
- Formatting issues when creating new flashcards
- Inconsistent behavior when reaching daily card limit
- Sync issues leading to lost progress and deleted decks
- Crashes and freezes when trying to access certain features

**Requested features**

- Add desktop/web version for seamless cross-device experience
- Improve customization options for card layouts and study settings
- Implement robust export/backup functionality for user data
- Enhance deck organization with folders and sub-decks
- Provide more language support beyond just Japanese and Spanish


### CarbonCalc

[App page](https://appshunter.io/ios/app/carboncalc/id6503479642)

Discover your environmental impact with a fun quiz and a detailed calculator. Learn how to reduce your carbon footprint through engaging gameplay and personalized estimations of your daily activities.

**Highlights:** Carbon footprint quiz game, Environmental impact calculator, Learn ways to reduce footprint, Estimate impact from activities, Educational content

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mopiq free?

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

### Is CarbonCalc free?

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

### Which has better reviews, Mopiq or CarbonCalc?

CarbonCalc is rated higher. Mopiq averages 4.7 out of 5 from 1.4K ratings, while CarbonCalc averages 5.0 from 1 ratings.

### Do Mopiq or CarbonCalc have ads?

Neither Mopiq nor CarbonCalc shows ads.

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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.*