# SmileLine Dental vs CDA Test Prep

The clearest difference is in-app purchases: SmileLine Dental at none against CDA Test Prep's 3. CDA Test Prep's advantage is update cadence (daily vs every 3 weeks) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. CDA Test Prep sells 3 one-off in-app purchases. SmileLine Dental asks for nothing beyond the download.

SmileLine Dental ships an update every 3 weeks, CDA Test Prep daily. The most recent releases landed on October 9, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SmileLine Dental | CDA Test Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smileline-dental/id6760435393/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Free | — |
| Size | 18 MB | 32 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Sarah Behmanesh](https://appshunter.io/developer/1884465154) | [Med Preps LLC](https://appshunter.io/developer/537568868) |

## What reviewers say

### SmileLine Dental

[App page](https://appshunter.io/ios/app/smileline-dental/id6760435393)

This app helps you manage your dental health by tracking treatments, appointments, and referrals. It features an interactive dental chart and allows you to store all your dental history in one place.

**Highlights:** Interactive dental chart, Track pending treatments, Complete treatment history, Organize specialist referrals, Attach photos to referrals, Backup and restore data

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

**In-app purchases:** none


### CDA Test Prep

[App page](https://appshunter.io/ios/app/cda-test-prep/id6776684816)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 48-Hour Access | $19.99 | one-time |
| 30-Day Access | $39.99 | one-time |
| Unlimited Access | $59.99 | one-time |


## Frequently asked questions

### Is SmileLine Dental free?

SmileLine Dental is free to download, with no in-app purchases.

### Is CDA Test Prep free?

CDA Test Prep is free to download, with in-app purchases available.

### Do SmileLine Dental or CDA Test Prep have ads?

Neither SmileLine Dental nor CDA Test Prep shows ads.

### Which is updated more often, SmileLine Dental or CDA Test Prep?

SmileLine Dental ships an update every 3 weeks, and CDA Test Prep daily. Most recently, SmileLine Dental was updated on October 9, 2026 and CDA Test Prep on October 25, 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.*