# Quadcorder vs Sci

The clearest difference is price: Sci at Free against Quadcorder's $1.99. Quadcorder's advantage is ads (none vs shown) and review sentiment (67% vs 56%). On rating, update cadence, in-app purchases and device support there is nothing between them.

Sci is free to download; Quadcorder costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 3.9 for Quadcorder against 4.0 for Sci. That said, the two scores are not equally well evidenced: Quadcorder has 80 ratings behind it against 13, so its average is the more settled of the two. Written reviews are what separate them: 67% of Quadcorder's written reviews are positive against 56% of Sci's.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on September 26, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Quadcorder | Sci |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [3.9 (80 ratings)](https://appshunter.io/ios/app/quadcorder/id298654660/reviews) | **[4.0 (13 ratings)](https://appshunter.io/ios/app/sci-fi-sounds-and-noises/id477955120/reviews)** |
| Number of ratings | **80** | 13 |
| Positive reviews | **66.9% of reviews** | 56.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 15 MB |
| Requires iOS | **7.0** | 18 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Adam McElhaney](https://appshunter.io/developer/298654663) | [iGreenEarth](https://appshunter.io/developer/351081815) |

## What reviewers say

### Quadcorder

[App page](https://appshunter.io/ios/app/quadcorder/id298654660)

Transform your device into a futuristic scanner with multiple animated scanning modes and sound effects. Perfect for sci-fi enthusiasts looking to enhance their imaginative play and role-playing experiences.

**Highlights:** Futuristic scanning device simulation, Three distinct scanning modes, Animated graphics, Sound effects, Customizable background volume and sound

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

**In-app purchases:** none

**What reviewers like**

- 🎮 Fun and entertaining novelty app for Star Trek fans
- 🔊 Authentic sound effects and beeps
- 🎨 Colorful and visually appealing graphics
- ⚡ Responsive button interactions
- 💰 Affordable price point ($0.99-$2.00)

**What reviewers complain about**

- 🐛 Sound functionality breaks with iOS updates
- 📱 Not optimized for newer screen sizes
- ❌ No actual functional features or real sensor integration
- 🔇 Muted by default, confusing for new users
- ⚠️ Inconsistent audio across different iOS versions

**Reported bugs**

- Sound stops working after iOS updates
- Emergency data upload button animation broken
- App crashes on iOS 9 and later versions
- No audio on iOS 14.2 and newer
- Intermittent sound functionality

**Requested features**

- Update for iPhone 14+ and iPad Pro screen sizes
- Real sensor integration (camera, GPS, accelerometer)
- Medical/body scan display screen
- More interactive screens and functionality
- Voyager or Nemesis tricorder variants


### Sci

[App page](https://appshunter.io/ios/app/sci-fi-sounds-and-noises/id477955120)

Explore a universe of over 50 unique science fiction sound effects. This app offers a diverse collection of interstellar noises, from alien calls and laser blasts to spaceship engines and robotic chatter.

**Highlights:** Over 50 sci-fi sound effects, Alien sounds, Laser sounds, Spaceship sounds, Robot sounds, Weapon sounds, Mood music

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Quadcorder free?

Quadcorder costs $1.99, with no in-app purchases.

### Is Sci free?

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

### Which has better reviews, Quadcorder or Sci?

Sci is rated higher. Quadcorder averages 3.9 out of 5 from 80 ratings, while Sci averages 4.0 from 13 ratings.

### Do Quadcorder or Sci have ads?

Sci shows ads; Quadcorder does not.

### Which is updated more often, Quadcorder or Sci?

Quadcorder ships an update every 4 months, and Sci every 4 months. Most recently, Quadcorder was updated on September 26, 2026 and Sci on September 18, 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.*