# Chemistry. Periodic table. AI vs PopStudy

The clearest difference is ads: PopStudy at none against Chemistry. Periodic table. AI's shown. PopStudy also leads on review sentiment (100% vs 84%) and monetization model (ad-supported vs free with in-app purchases). Chemistry. Periodic table. AI's advantage is ratings volume (2.7K vs 9) and device support (6 vs 2). On price, rating, update cadence and in-app purchases there is nothing between them.

Both are free to download. Chemistry. Periodic table. AI sells 9 in-app purchases, starting at $1.99 per 7 days and PopStudy sells 9 in-app purchases, starting at $7.49 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Chemistry. Periodic table. AI against 4.9 for PopStudy. That said, the two scores are not equally well evidenced: Chemistry. Periodic table. AI has 2.7K ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 84% of Chemistry. Periodic table. AI's written reviews are positive against 100% of PopStudy's.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Chemistry. Periodic table. AI | PopStudy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (2.7K ratings)](https://appshunter.io/ios/app/chemistry-periodic-table-ai/id493558583/reviews) | [4.9 (9 ratings)](https://appshunter.io/ios/app/popstudy-language-learning/id1169672977/reviews) |
| Number of ratings | **2.7K** | 9 |
| Positive reviews | 84.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 71 MB | 152 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Apple TV, Apple Watch, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Denis Chashchin](https://appshunter.io/developer/493558586) | [Longtail Studios](https://appshunter.io/developer/305747913) |

## What reviewers say

### Chemistry. Periodic table. AI

[App page](https://appshunter.io/ios/app/chemistry-periodic-table-ai/id493558583)

Explore an interactive periodic table with 3D models and AI-powered explanations. Solve chemical reactions, calculate molar mass, and access a comprehensive reference. Features AR and home screen widgets for enhanced learning.

**Highlights:** Interactive Periodic Table with 3D models, AI-powered chemistry tutor (ChemAI), Chemical reaction solver, Molar mass calculator, Augmented Reality (AR) elements, Home screen widgets

**Features:** macOS Compatibility, Family Sharing, Apple Watch app

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chemistry Pro | $1.99 | per 7 days |
| Chemistry Pro | $2.99 | per year |
| Chemistry Pro | $2.99 | per 3 months |
| ChemAI Tutor | $2.99 | per month |
| Chemistry Pro | $3.99 | per 3 months |
| Chemical Elements Info | $7.99 | one-time |
| Chemistry Pro | $12.99 | one-time |
| Chemistry Pro | $17.49 | one-time |
| Chemistry Pro | $34.99 | one-time |

**What reviewers like**

- 👍 Convenient and easy to use
- 🚀 Helpful for chemistry studies
- 💡 Detailed periodic table and element information
- 🔍 Useful features like molar mass calculator and reaction balancer

**What reviewers complain about**

- 🐛 Some data inaccuracies or errors
- 💰 Subscription model for premium features
- 🔋 Potential battery drain issues

**Reported bugs**

- Crashes or freezes when opening certain sections
- Search function not working as expected for some elements

**Requested features**

- Add electronegativity values to periodic table
- Improve chemical equation balancing functionality
- Implement a dark mode option
- Highlight/compare elements on periodic table


### PopStudy

[App page](https://appshunter.io/ios/app/popstudy-language-learning/id1169672977)

Master any subject with this educational app utilizing a spaced repetition system. Create custom study mixes, engage in personalized sessions, and track your learning progress. Access curated content and study offline on your devices.

**Highlights:** Spaced repetition system, Curated expert content, Customizable study mixes, Personalized daily sessions, Progress tracking, Cross-device syncing, Offline studying

**Features:** Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Student Monthly | $7.49 | per month |
| Personal Monthly | $14.99 | per month |
| Family Monthly | $19.99 | per month |
| Student Yearly | $47.90 | per year |
| Personal Yearly | $95.90 | per year |
| Family Yearly | $167.99 | per year |
| 1-Month Subscription | $7.99 | one-time |
| 3-Month Subscription | $19.99 | one-time |
| 1-Year Subscription | $59.99 | one-time |


## Frequently asked questions

### Is Chemistry. Periodic table. AI free?

Chemistry. Periodic table. AI is free to download, with in-app purchases available.

### Is PopStudy free?

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

### Which has better reviews, Chemistry. Periodic table. AI or PopStudy?

Chemistry. Periodic table. AI and PopStudy are both rated 4.9 out of 5 on the App Store, from 2.7K and 9 ratings respectively.

### Do Chemistry. Periodic table. AI or PopStudy have ads?

Chemistry. Periodic table. AI shows ads; PopStudy does not.

### Which is updated more often, Chemistry. Periodic table. AI or PopStudy?

Chemistry. Periodic table. AI ships an update fortnightly, and PopStudy fortnightly. Most recently, Chemistry. Periodic table. AI was updated on October 30, 2026 and PopStudy on October 29, 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.*