# Rapid Fire 100 vs Duo Runner 3D

The clearest difference is in-app purchases: Rapid Fire 100 at none against Duo Runner 3D's 1. Duo Runner 3D's advantage is update cadence (monthly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Duo Runner 3D sells 1 one-off in-app purchase. Rapid Fire 100 asks for nothing beyond the download.

Rapid Fire 100 ships an update every 3 months, Duo Runner 3D monthly. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Rapid Fire 100 | Duo Runner 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.9 (17 ratings)](https://appshunter.io/ios/app/duo-runner-3d/id1562845789/reviews)** |
| Number of ratings | — | **17** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 38 MB |
| Requires iOS | 13 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CriticalBlue Ltd](https://appshunter.io/developer/1032709343) | [IK SEONG PARK](https://appshunter.io/developer/488068869) |

## What reviewers say

### Rapid Fire 100

[App page](https://appshunter.io/ios/app/rapid-fire-100/id1032709344)

**Features:** macOS Compatibility

**In-app purchases:** none


### Duo Runner 3D

[App page](https://appshunter.io/ios/app/duo-runner-3d/id1562845789)

Engage in a thrilling running race where you collect numbers to grow your character. Navigate through challenging obstacles and compete against others to become the ultimate number run master.

**Highlights:** Number collection gameplay, 3D running races, Obstacle course challenges, Competitive multiplayer, Race master game

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No ads | $2.99 | one-time |


## Frequently asked questions

### Is Rapid Fire 100 free?

Rapid Fire 100 is free to download, with no in-app purchases.

### Is Duo Runner 3D free?

Duo Runner 3D is free to download, with in-app purchases available.

### Do Rapid Fire 100 or Duo Runner 3D have ads?

Neither Rapid Fire 100 nor Duo Runner 3D shows ads.

### Which is updated more often, Rapid Fire 100 or Duo Runner 3D?

Rapid Fire 100 ships an update every 3 months, and Duo Runner 3D monthly. Most recently, Rapid Fire 100 was updated on October 14, 2026 and Duo Runner 3D on October 24, 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.*