# Smart periodic table vs CDL Prep A+

The clearest difference is price: CDL Prep A+ at Free against Smart periodic table's $1.99. CDL Prep A+ also leads on update cadence (every 5 weeks vs every 7 months). Smart periodic table's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

CDL Prep A+ is free to download; Smart periodic table costs $1.99 up front. CDL Prep A+ sells 2 in-app purchases, starting at $8.99 per month. Smart periodic table asks for nothing beyond the download.

Smart periodic table ships an update every 7 months, CDL Prep A+ every 5 weeks. The most recent releases landed on September 29, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Smart periodic table | CDL Prep A+ |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-periodic-table/id329156691/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 weeks** |
| Monetization | Paid | — |
| Size | 1 MB | 13 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [AOBO Co.,Ltd](https://appshunter.io/developer/310846199) | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) |

## What reviewers say

### Smart periodic table

[App page](https://appshunter.io/ios/app/smart-periodic-table/id329156691)

Access comprehensive details on all 118 chemical elements, including their properties, discovery, and atomic information. This app serves as a valuable study aid and translation tool, offering offline access to basic data and online links to Wikipedia for further research.

**Highlights:** 118 element details, Multi-language element names, Offline basic information, Online Wikipedia links, Search by category/phase, Email element data

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

**In-app purchases:** none


### CDL Prep A+

[App page](https://appshunter.io/ios/app/cdl-prep-a-plus/id6736498207)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $8.99 | per month |
| Lifetime version | $14.99 | one-time |


## Frequently asked questions

### Is Smart periodic table free?

Smart periodic table costs $1.99, with no in-app purchases.

### Is CDL Prep A+ free?

CDL Prep A+ is free to download, with in-app purchases available.

### Do Smart periodic table or CDL Prep A+ have ads?

Neither Smart periodic table nor CDL Prep A+ shows ads.

### Which is updated more often, Smart periodic table or CDL Prep A+?

Smart periodic table ships an update every 7 months, and CDL Prep A+ every 5 weeks. Most recently, Smart periodic table was updated on September 29, 2026 and CDL Prep A+ on September 19, 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.*