# Doctor Blast vs RETRO

The clearest difference is ads: Doctor Blast at none against RETRO's shown. Doctor Blast also leads on update cadence (every 3 weeks vs every 7 months) and iOS requirement (12.0 vs 15.0). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

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

Doctor Blast ships an update every 3 weeks, RETRO every 7 months. The most recent releases landed on October 2, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Doctor Blast | RETRO |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 7 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 165 MB | 124 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Jadore Pte. Ltd.](https://appshunter.io/developer/1549561146) | [Apps Bergman Ltda](https://appshunter.io/developer/1117417290) |

## 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 |


### RETRO

[App page](https://appshunter.io/ios/app/retro-space-2/id6502924583)

Embark on an epic space adventure with over 30 action-packed levels. Battle swarms of enemies, face challenging bosses, and enjoy stunning retro-style graphics with an immersive soundtrack. Compete for top scores worldwide.

**Highlights:** 30+ levels of intense action, Epic boss battles, Stunning retro-style graphics, Immersive soundtrack, Worldwide high score competition

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extra Life | $0.99 | one-time |
| Midas Hands | $1.99 | one-time |
| Bonus Package | $2.99 | one-time |


## Frequently asked questions

### Is Doctor Blast free?

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

### Is RETRO free?

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

### Do Doctor Blast or RETRO have ads?

RETRO shows ads; Doctor Blast does not.

### Which is updated more often, Doctor Blast or RETRO?

Doctor Blast ships an update every 3 weeks, and RETRO every 7 months. Most recently, Doctor Blast was updated on October 2, 2026 and RETRO 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.*