# Optical Inquisitor Zero vs Nuclear Day Survival

The clearest difference is rating: Optical Inquisitor Zero at 4.4 against Nuclear Day Survival's 3.8. Optical Inquisitor Zero also leads on in-app purchases (none vs 18) and review sentiment (90% vs 59%). Nuclear Day Survival's advantage is update cadence (every 2 months vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Nuclear Day Survival sells 18 one-off in-app purchases. Optical Inquisitor Zero asks for nothing beyond the download.

Optical Inquisitor Zero holds the better App Store score, 4.4 against 3.8. That said, the two scores are not equally well evidenced: Optical Inquisitor Zero has 2.6K ratings behind it against 354, so its average is the more settled of the two. Written reviews point the same way: 90% of Optical Inquisitor Zero's written reviews are positive against 59% of Nuclear Day Survival's.

Optical Inquisitor Zero ships an update every 7 months, Nuclear Day Survival every 2 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | Optical Inquisitor Zero | Nuclear Day Survival |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (2.6K ratings)](https://appshunter.io/ios/app/optical-inquisitor-zero/id766595090/reviews)** | [3.8 (354 ratings)](https://appshunter.io/ios/app/nuclear-day-survival/id1666266916/reviews) |
| Number of ratings | **2.6K** | 354 |
| Positive reviews | **90.3% of reviews** | 59.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 60 MB | 734 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 9+ |
| Developer | [Crescent Moon Games LLC](https://appshunter.io/developer/370521012) | [APPWILL COMPANY LTD](https://appshunter.io/developer/1761313938) |

## What reviewers say

### Optical Inquisitor Zero

[App page](https://appshunter.io/ios/app/optical-inquisitor-zero/id766595090)

Experience a retro sniper adventure set in 1988. Help Tommy Rissken get revenge on those who betrayed him and return to his daughter. Features superior sniper mechanics, ragdoll physics, and an 80s soundtrack.

**Highlights:** Superior sniper mechanics, Ragdoll physics, Destructible bodies, 80s style soundtrack, Interactive level elements, Old 80s style cell phones

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

**In-app purchases:** none

**What reviewers like**

- 👍 Fun gameplay
- 🚀 Good value for money
- 🎨 Interesting retro style
- 💥 Satisfying sniper mechanics

**What reviewers complain about**

- 🔒 Censored content
- 🔋 Frequent ads
- 🐛 Occasional crashes or bugs
- 🕰️ Short story mode

**Reported bugs**

- Levels resetting after crashes
- Difficulty progressing past certain missions

**Requested features**

- Uncensored version
- More missions and levels
- Ability to disable ads
- Improved performance on older devices


### Nuclear Day Survival

[App page](https://appshunter.io/ios/app/nuclear-day-survival/id1666266916)

Experience a gripping survival game set in a post-nuclear city. Battle radiation, hunger, and disease while uncovering a compelling story. Your choices will determine the fate of yourself and others.

**Highlights:** Hard survival mechanics, Unique storyline and quests, Dynamic game world, Crafting system, Explore ruined environments

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

**In-app purchases (18)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Panacea | $0.99 | one-time |
| Tickets Bundle | $1.99 | one-time |
| Protection | $2.49 | one-time |
| Healing | $2.49 | one-time |
| Tickets Pouch | $2.99 | one-time |
| Starter Pack | $2.99 | one-time |
| Box of Tickets Sale | $3.89 | one-time |
| Tickets Bag | $3.99 | one-time |
| Firepower | $3.99 | one-time |
| Disabling advertising | $4.99 | one-time |
| Sniper | $5.49 | one-time |
| Tickets Backpack | $5.99 | one-time |
| No ADS | $5.99 | one-time |
| Suitcase Tickets Sale | $7.99 | one-time |
| Tickets Box | $8.99 | one-time |
| Suitcase with Tokens | $14.99 | one-time |
| Cabinet with Tokens | $29.99 | one-time |
| UAZ of tokens | $59.99 | one-time |

**What reviewers like**

- 🤑 Pocket version of Stalker
- 🔥 Unique and cool game
- 👍 Great mix of grinding and story
- 🚀 No ads

**What reviewers complain about**

- 🐛 Buggy at times
- 🔥 Progression halted due to bugs
- 🐢 Slow traveling locked behind ads
- 🤯 Quests and rewards are broken
- 🤕 Radiation levels and crafting values are inconsistent

**Reported bugs**

- Progression blocked at certain points due to bugs
- Crafted items disappearing from inventory
- Quests getting stuck or not progressing
- Crouching bug that prevents standing up
- Enemies/objects becoming invincible or glitched

**Requested features**

- Add Chinese language support
- Allow replaying individual missions/quests without restarting the game
- Reduce cooldown on raids and expeditions
- Add more content and larger-scale updates
- Improve inventory management


## Frequently asked questions

### Is Optical Inquisitor Zero free?

Optical Inquisitor Zero is free to download, with no in-app purchases.

### Is Nuclear Day Survival free?

Nuclear Day Survival is free to download, with in-app purchases available.

### Which has better reviews, Optical Inquisitor Zero or Nuclear Day Survival?

Optical Inquisitor Zero is rated higher. Optical Inquisitor Zero averages 4.4 out of 5 from 2.6K ratings, while Nuclear Day Survival averages 3.8 from 354 ratings.

### Do Optical Inquisitor Zero or Nuclear Day Survival have ads?

Neither Optical Inquisitor Zero nor Nuclear Day Survival shows ads.

### Which is updated more often, Optical Inquisitor Zero or Nuclear Day Survival?

Optical Inquisitor Zero ships an update every 7 months, and Nuclear Day Survival every 2 months. Most recently, Optical Inquisitor Zero was updated on October 30, 2026 and Nuclear Day Survival on October 30, 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.*