# SimDif vs Periodic Table & Element Guide

The clearest difference is device support: SimDif at 4 against Periodic Table & Element Guide's 2. SimDif also leads on iOS requirement (12.0 vs 17). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. SimDif sells 15 in-app purchases, starting at $3.99 per month and Periodic Table & Element Guide sells 2 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

SimDif ships an update monthly, Periodic Table & Element Guide every 3 weeks. The most recent releases landed on October 1, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | SimDif | Periodic Table & Element Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.6K ratings)](https://appshunter.io/ios/app/simdif-website-builder/id560089880/reviews)** | — |
| Number of ratings | **1.6K** | — |
| Positive reviews | 81.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 28 MB | 8 MB |
| Requires iOS | **12.0** | 17 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [The Simple Different Company Ltd](https://appshunter.io/developer/560089883) | [Courtney Rawlings](https://appshunter.io/developer/1832354689) |

## What reviewers say

### SimDif

[App page](https://appshunter.io/ios/app/simdif-website-builder/id560089880)

Easily create, edit, and publish professional websites from any device. AI tools assist with writing and optimization, simplifying the process for beginners and pros alike. Connect custom domains and choose from various plans, including a free option.

**Highlights:** AI-powered writing assistance, Step-by-step content advisor, Cross-device compatibility, Optimization Assistant for SEO, Customizable themes and forms, E-commerce integration

**Features:** Vision Pro support

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Smart features (1 month) | $3.99 | per month |
| Smart Features (1 month) | $7.90 | per month |
| Smart Standard (1 month) | $8.49 | per month |
| Pro features (1 month) | $14.90 | per month |
| Pro Standard (1 month) | $16.49 | per month |
| SimDif SMART _ Annual Payment | $38.99 | per year |
| Smart Standard (1 year) | $59.00 | per year |
| Smart Features (1 year) | $79.00 | per year |
| Pro Standard (1 year) | $109.00 | per year |
| Pro features (1 year) | $149.00 | per year |
| Pro Renewal for 1 Year SimDif1 | $39.99 | one-time |
| 1 Year of Pro features for this site | $54.99 | one-time |
| Smart features (1 year) | $59.00 | one-time |
| Pro features (1 year) | $109.00 | one-time |
| Pro Standard (1 year) | $109.00 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Straightforward website creation
- 💡 Customizable templates
- 🚀 Quick updates and publishing
- 👍 User-friendly interface

**What reviewers complain about**

- 🐛 Occasional glitches and bugs
- 🔒 Limited customization options
- 🔒 Restricted to 30 pages in free version
- 🔒 Mandatory publishing every 21 days
- 🔒 Inability to edit existing sites

**Reported bugs**

- Verification email not working
- Inability to upload images
- Subscription issues and billing problems
- Compatibility problems with certain browsers

**Requested features**

- Undo/redo functionality
- Expanded template library
- More font and color customization
- Ability to embed videos and documents
- Improved SEO and analytics tools


### Periodic Table & Element Guide

[App page](https://appshunter.io/ios/app/periodic-table-and-element-guide/id6758946775)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Periodic Pro Weekly | $3.99 | per 7 days |
| Periodic Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is SimDif free?

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

### Is Periodic Table & Element Guide free?

Periodic Table & Element Guide is free to download, with in-app purchases available.

### Do SimDif or Periodic Table & Element Guide have ads?

Neither SimDif nor Periodic Table & Element Guide shows ads.

### Which is updated more often, SimDif or Periodic Table & Element Guide?

SimDif ships an update monthly, and Periodic Table & Element Guide every 3 weeks. Most recently, SimDif was updated on October 1, 2026 and Periodic Table & Element Guide on September 10, 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.*