# SPD vs Retro

The clearest difference is in-app purchases: Retro at none against SPD's 6. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SPD sells 6 one-off in-app purchases. Retro asks for nothing beyond the download.

SPD ships an update every 2 days, Retro daily. The most recent releases landed on September 11, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | SPD | Retro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/retro-space-attack/id6738591809/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 days | **Daily** |
| Monetization | — | Ad-supported |
| Size | 176 MB | 163 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Purvisha Gadhiya](https://appshunter.io/developer/1608673782) | [Batuhan Yildirim](https://appshunter.io/developer/1780110016) |

## What reviewers say

### SPD

[App page](https://appshunter.io/ios/app/spd-space-power-delta/id6469977600)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gems 10 | $0.99 | one-time |
| Gems 25 | $1.99 | one-time |
| Gems 40 | $2.99 | one-time |
| Gems 55 | $3.99 | one-time |
| Gems 70 | $4.99 | one-time |
| Gems 90 | $5.99 | one-time |


### Retro

[App page](https://appshunter.io/ios/app/retro-space-attack/id6738591809)

Engage in an arcade-style space shooter with waves of enemies and challenging bosses. Unlock upgrades and master multiple unique ships with stunning pixel art and fast-paced gameplay. It's easy to learn but difficult to master.

**Highlights:** Arcade-style space shooter, Battle waves of enemies, Face epic bosses, Unlock powerful upgrades, Stunning pixel art, Multiple unique ships

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SPD free?

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

### Is Retro free?

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

### Do SPD or Retro have ads?

Both SPD and Retro show ads.

### Which is updated more often, SPD or Retro?

SPD ships an update every 2 days, and Retro daily. Most recently, SPD was updated on September 11, 2026 and Retro on June 5, 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.*