# D/Generation vs OZO

The clearest difference is review sentiment: OZO at 100% against D/Generation's 21%. OZO also leads on update cadence (fortnightly vs monthly). D/Generation's advantage is ads (none vs shown). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. D/Generation sells 1 one-off in-app purchase and OZO sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

D/Generation ships an update monthly, OZO fortnightly. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | D/Generation | OZO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (7 ratings)](https://appshunter.io/ios/app/dgeneration/id1010598646/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 21.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 29 MB | 432 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 9+ |
| Developer | [Bay Software Development Ltd](https://appshunter.io/developer/1732692878) | [COCOBOO Games](https://appshunter.io/developer/1750013783) |

## What reviewers say

### D/Generation

[App page](https://appshunter.io/ios/app/dgeneration/id1010598646)

Embark on a rescue mission in a corporate building overrun by biogen weapons. Deliver packages, save hostages, and uncover the truth across 10 interconnected levels.

**Highlights:** Rescue hostages, Explore 10 levels, Fight biogen weapons, Uncover corporate mystery, MFi controller support

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all levels and remove ads | $0.99 | one-time |


### OZO

[App page](https://appshunter.io/ios/app/ozo-ocean-zombie-outbreak/id6602891043)

Defend the ocean from a zombie invasion by assembling a team of diverse sea creatures. Strategize your defenses, unlock unique abilities, and upgrade your units through challenging missions and daily challenges.

**Highlights:** Diverse sea creature units with unique abilities, Challenging missions across various levels, High-quality underwater graphics and animations, Customizable upgrades for units, Daily challenges and rewards, Strategic defense gameplay

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quick Boost | $0.99 | one-time |
| Piggy Bank | $0.99 | one-time |
| Remove Interrupted ads | $0.99 | one-time |
| Power Surge | $1.49 | one-time |
| Action Vault | $1.79 | one-time |
| Flash Forward | $1.79 | one-time |
| Turbo Deal | $2.09 | one-time |
| Infinity Bundle | $2.59 | one-time |
| VIP Membership | $4.99 | one-time |
| Mega Gem Pack | $12.99 | one-time |


## Frequently asked questions

### Is D/Generation free?

D/Generation is free to download, with in-app purchases available.

### Is OZO free?

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

### Do D/Generation or OZO have ads?

OZO shows ads; D/Generation does not.

### Which is updated more often, D/Generation or OZO?

D/Generation ships an update monthly, and OZO fortnightly. Most recently, D/Generation was updated on November 1, 2026 and OZO on November 4, 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.*