# Mendeleev.me vs Readence

The clearest difference is update cadence: Readence at weekly against Mendeleev.me's every 6 weeks. Mendeleev.me's advantage is iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Mendeleev.me sells 4 one-off in-app purchases and Readence sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Mendeleev.me ships an update every 6 weeks, Readence weekly. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Mendeleev.me | Readence |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (24 ratings)](https://appshunter.io/ios/app/mendeleevme/id1601845870/reviews)** | — |
| Number of ratings | **24** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Paid | — |
| Size | 210 MB | 222 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [AGILE FLEX TECH SRL](https://appshunter.io/developer/1601049602) | [健翔 黄](https://appshunter.io/developer/6795977321) |

## What reviewers say

### Mendeleev.me

[App page](https://appshunter.io/ios/app/mendeleevme/id1601845870)

Explore the periodic table with detailed element information, interactive chemistry experiments, and atom structure simulations. This educational tool offers multi-language support, downloadable resources, and studying analytics to enhance learning. Discover hidden secrets and enjoy a cohesive, functional design.

**Highlights:** Virtual chemistry laboratory, Detailed element information, Atom structure simulations, Downloadable element PDFs, Studying analytics, Multi-language support, Interactive experiments

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SPECIAL OFFER! | $9.99 | one-time |
| The Chernobyl Experiments Pack | $9.99 | one-time |
| The Explosive Experiments Pack | $9.99 | one-time |
| The Metals Experiments Pack | $9.99 | one-time |


### Readence

[App page](https://appshunter.io/ios/app/readence/id6796986148)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 页间月度高级版 | $3.99 | per month |
| 页间高级版年度会员 | $19.99 | per year |
| 永久高级版 | $14.99 | one-time |


## Frequently asked questions

### Is Mendeleev.me free?

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

### Is Readence free?

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

### Do Mendeleev.me or Readence have ads?

Neither Mendeleev.me nor Readence shows ads.

### Which is updated more often, Mendeleev.me or Readence?

Mendeleev.me ships an update every 6 weeks, and Readence weekly. Most recently, Mendeleev.me was updated on October 14, 2026 and Readence on October 24, 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.*