# Doctor Blast vs Virus Invaders 3D

The clearest difference is update cadence: Doctor Blast at every 3 weeks against Virus Invaders 3D's every 2 months. Doctor Blast also leads on iOS requirement (12.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Doctor Blast sells 6 one-off in-app purchases and Virus Invaders 3D sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Doctor Blast ships an update every 3 weeks, Virus Invaders 3D every 2 months. The most recent releases landed on October 2, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Doctor Blast | Virus Invaders 3D |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 165 MB | 114 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Jadore Pte. Ltd.](https://appshunter.io/developer/1549561146) | [Sanel Mesinovic](https://appshunter.io/developer/864231171) |

## What reviewers say

### Doctor Blast

[App page](https://appshunter.io/ios/app/doctor-blast/id1509932902)

Engage in an exhilarating shooting experience against challenging adversaries. Choose your role as a doctor battling viruses or a soldier fighting AI robots. Utilize special items and upgrades to enhance your abilities and unlock new themes.

**Highlights:** Strategic ball shooting gameplay, Boss battles, Multiple theme choices (Doctor vs. Viruses, Soldier vs. Robots), Special items for power-ups, Upgrade system for enhanced abilities, Cannon skin customization

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Beginner Pack | $0.99 | one-time |
| 10K Gold | $0.99 | one-time |
| Bundle Heart | $0.99 | one-time |
| Special Pack | $1.99 | one-time |
| Diamond Lover | $2.99 | one-time |
| Remove Ad Forever | $2.99 | one-time |


### Virus Invaders 3D

[App page](https://appshunter.io/ios/app/virus-invaders-3d/id6446288936)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $0.99 | one-time |


## Frequently asked questions

### Is Doctor Blast free?

Doctor Blast is free to download, with in-app purchases available.

### Is Virus Invaders 3D free?

Virus Invaders 3D is free to download, with in-app purchases available.

### Do Doctor Blast or Virus Invaders 3D have ads?

Neither Doctor Blast nor Virus Invaders 3D shows ads.

### Which is updated more often, Doctor Blast or Virus Invaders 3D?

Doctor Blast ships an update every 3 weeks, and Virus Invaders 3D every 2 months. Most recently, Doctor Blast was updated on October 2, 2026 and Virus Invaders 3D on October 16, 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.*