# Mastering Spectroscopy vs Mopiq

The clearest difference is rating: Mopiq at 4.7 against Mastering Spectroscopy's 3.3. Mopiq also leads on update cadence (weekly vs every 4 months) and review sentiment (69% vs 40%). Mastering Spectroscopy's advantage is iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Mastering Spectroscopy sells 1 one-off in-app purchase and Mopiq sells 10 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Mopiq holds the better App Store score, 4.7 against 3.3. That said, the two scores are not equally well evidenced: Mopiq has 1.4K ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 40% of Mastering Spectroscopy's written reviews are positive against 69% of Mopiq's.

Mastering Spectroscopy ships an update every 4 months, Mopiq weekly. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Mastering Spectroscopy | Mopiq |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (6 ratings)](https://appshunter.io/ios/app/mastering-spectroscopy/id1196400309/reviews) | **[4.7 (1.4K ratings)](https://appshunter.io/ios/app/mopiq-ai-flashcards-learning/id6443485322/reviews)** |
| Number of ratings | 6 | **1.4K** |
| Positive reviews | 40.0% of reviews | **69.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 20 MB | 148 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Onlea Enterprises Inc.](https://appshunter.io/developer/995311636) | [Xavier Pedrals Camprubi](https://appshunter.io/developer/1759046547) |

## What reviewers say

### Mastering Spectroscopy

[App page](https://appshunter.io/ios/app/mastering-spectroscopy/id1196400309)

Practice organic chemistry by analyzing IR, NMR, and mass spectrum data. Identify functional groups and proton types in graphs to build organic compounds.

**Highlights:** Analyze IR, NMR, and mass spectrum data, Identify functional groups, Identify proton types, Build organic compounds, Practice organic chemistry

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| access to all samples | $1.99 | one-time |


### 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 (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mopiq Flashcards Pro (Weekly) | $2.99 | per 7 days |
| Mopiq Flashcards Pro (Weekly) | $4.99 | 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


## Frequently asked questions

### Is Mastering Spectroscopy free?

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

### Is Mopiq free?

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

### Which has better reviews, Mastering Spectroscopy or Mopiq?

Mopiq is rated higher. Mastering Spectroscopy averages 3.3 out of 5 from 6 ratings, while Mopiq averages 4.7 from 1.4K ratings.

### Do Mastering Spectroscopy or Mopiq have ads?

Neither Mastering Spectroscopy nor Mopiq shows ads.

### Which is updated more often, Mastering Spectroscopy or Mopiq?

Mastering Spectroscopy ships an update every 4 months, and Mopiq weekly. Most recently, Mastering Spectroscopy was updated on October 24, 2026 and Mopiq on October 23, 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.*