# IPST Chemistry E vs Lightin

The clearest difference is rating: IPST Chemistry E at 5.0 against Lightin's 3.7. IPST Chemistry E also leads on in-app purchases (none vs 2) and iOS requirement (8.0 vs 15.0). Lightin's advantage is update cadence (every 8 days vs every 5 months) and ratings volume (3 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Lightin sells 2 in-app purchases, starting at $0.99 per month. IPST Chemistry E asks for nothing beyond the download.

IPST Chemistry E holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

IPST Chemistry E ships an update every 5 months, Lightin every 8 days. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | IPST Chemistry E | Lightin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ipst-chemistry-e-book-periodic-table/id1027846900/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/lightin/id6444041267/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 8 days** |
| Monetization | **Free** | Subscription |
| Size | 29 MB | 28 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Kathi Studio Co.,Ltd.](https://appshunter.io/developer/436981312) | [RNOVEL PTE. LTD.](https://appshunter.io/developer/1630110740) |

## What reviewers say

### IPST Chemistry E

[App page](https://appshunter.io/ios/app/ipst-chemistry-e-book-periodic-table/id1027846900)

This electronic textbook explores the periodic table, comparing properties of metals, metalloids, and nonmetals. It details trends in metallic properties, applications of elements, and radioactive elements, including their benefits and drawbacks. The app also contrasts fission and fusion nuclear reactions and their uses.

**Highlights:** Periodic table properties comparison, Metallic property trends analysis, Element applications and uses, Radioactive element properties, Fission vs. fusion reactions, Nuclear energy uses and impacts

**In-app purchases:** none


### Lightin

[App page](https://appshunter.io/ios/app/lightin/id6444041267)

Access condensed audio versions of bestselling non-fiction books and podcasts. Develop your career with key insights on management and leadership in minutes. Enjoy professional narration and a wide range of categories.

**Highlights:** Audio versions of books and podcasts, Professional narration, Condensed non-fiction insights, Management and leadership topics, 3-day free trial, Multiple categories

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription Fee Monthly | $0.99 | per month |
| Premium Monthly | $12.99 | per month |


## Frequently asked questions

### Is IPST Chemistry E free?

IPST Chemistry E is free to download, with no in-app purchases.

### Is Lightin free?

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

### Which has better reviews, IPST Chemistry E or Lightin?

IPST Chemistry E is rated higher. IPST Chemistry E averages 5.0 out of 5 from 1 ratings, while Lightin averages 3.7 from 3 ratings.

### Do IPST Chemistry E or Lightin have ads?

Neither IPST Chemistry E nor Lightin shows ads.

### Which is updated more often, IPST Chemistry E or Lightin?

IPST Chemistry E ships an update every 5 months, and Lightin every 8 days. Most recently, IPST Chemistry E was updated on November 1, 2026 and Lightin on November 7, 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.*