# RMDC vs Surge Spin

The clearest difference is ads: RMDC at none against Surge Spin's shown. Surge Spin's advantage is update cadence (every 8 days vs every 3 weeks) and iOS requirement (14.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RMDC ships an update every 3 weeks, Surge Spin every 8 days. The most recent releases landed on October 21, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | RMDC | Surge Spin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/rmdc/id1643771153/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Monetization | Free | — |
| Size | 52 MB | 119 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Metropolitan Denver Dental Society](https://appshunter.io/developer/1442003072) | [surgespinexperience llc](https://appshunter.io/developer/1455874997) |

## What reviewers say

### RMDC

[App page](https://appshunter.io/ios/app/rmdc/id1643771153)

This app provides information and registration for a large continuing education event for dental professionals. It features cutting-edge lectures, hands-on workshops, an Expo Hall, and networking opportunities.

**Highlights:** Event information, Registration, Lectures and workshops, Expo Hall access, Networking events

**Features:** macOS Compatibility

**In-app purchases:** none


### Surge Spin

[App page](https://appshunter.io/ios/app/surge-spin/id6473739016)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is RMDC free?

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

### Is Surge Spin free?

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

### Do RMDC or Surge Spin have ads?

Surge Spin shows ads; RMDC does not.

### Which is updated more often, RMDC or Surge Spin?

RMDC ships an update every 3 weeks, and Surge Spin every 8 days. Most recently, RMDC was updated on October 21, 2026 and Surge Spin on October 9, 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.*