# DDS GP vs MathImpact

The clearest difference is in-app purchases: MathImpact at none against DDS GP's 5. MathImpact also leads on ads (none vs shown) and rating (5.0 vs 4.7). DDS GP's advantage is ratings volume (11 vs 2). On price, update cadence and device support there is nothing between them.

Both are free to download. DDS GP sells 5 in-app purchases, starting at $89.00 per month. MathImpact asks for nothing beyond the download.

MathImpact holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: DDS GP has 11 ratings behind it against 2, so its average is the more settled of the two.

DDS GP ships an update fortnightly, MathImpact every 3 weeks. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | DDS GP | MathImpact |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (11 ratings)](https://appshunter.io/ios/app/dds-gp/id386704683/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/mathimpact-contest-math-prep/id6813772221/reviews)** |
| Number of ratings | **11** | 2 |
| Positive reviews | 78.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 252 MB | 36 MB |
| Requires iOS | 17.5 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Kick Your Apps, Inc.](https://appshunter.io/developer/386704686) | [Surendra Sivagurunathan](https://appshunter.io/developer/1873691846) |

## What reviewers say

### DDS GP

[App page](https://appshunter.io/ios/app/dds-gp/id386704683)

This application helps dental professionals visually explain oral health conditions and treatment options to their patients. It allows users to draw on the screen, add their own images, and create custom treatment plans for printing or sending.

**Highlights:** Visual patient consultations, Tap and drag to show conditions, On-screen drawing and saving, Add and draw on custom images, Custom treatment plan creation, Over 200 demonstrations

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $89.00 | per month |
| Yearly | $499.00 | per year |
| Yearly Special | $499.99 | per year |
| DDS YES Homoly Content | $99.99 | one-time |
| Lifetime Membership | $1699.99 | one-time |


### MathImpact

[App page](https://appshunter.io/ios/app/mathimpact-contest-math-prep/id6813772221)

This app offers daily practice problems and guided solutions for elementary and middle school students preparing for math competitions. It features mock tests, progress tracking, and concept lessons, with no account required.

**Highlights:** Daily practice missions, Guided solutions and hints, Realistic timed mock tests, Progress tracking by concept, Multiple competition tracks, Concept lessons

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

**In-app purchases:** none


## Frequently asked questions

### Is DDS GP free?

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

### Is MathImpact free?

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

### Which has better reviews, DDS GP or MathImpact?

MathImpact is rated higher. DDS GP averages 4.7 out of 5 from 11 ratings, while MathImpact averages 5.0 from 2 ratings.

### Do DDS GP or MathImpact have ads?

DDS GP shows ads; MathImpact does not.

### Which is updated more often, DDS GP or MathImpact?

DDS GP ships an update fortnightly, and MathImpact every 3 weeks. Most recently, DDS GP was updated on October 14, 2026 and MathImpact on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*