# BTTF Clock vs NEXUS Protocol

The clearest difference is in-app purchases: BTTF Clock at none against NEXUS Protocol's 2. BTTF Clock also leads on ratings volume (31 vs 1) and device support (3 vs 1). NEXUS Protocol's advantage is rating (5.0 vs 4.6) and update cadence (every 2 weeks vs every 6 weeks). On price and ads there is nothing between them.

Both are free to download. NEXUS Protocol sells 2 in-app purchases, starting at $7.99 per month. BTTF Clock asks for nothing beyond the download.

NEXUS Protocol holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: BTTF Clock has 31 ratings behind it against 1, so its average is the more settled of the two.

BTTF Clock ships an update every 6 weeks, NEXUS Protocol every 2 weeks. The most recent releases landed on October 13, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | BTTF Clock | NEXUS Protocol |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (31 ratings)](https://appshunter.io/ios/app/bttf-clock/id6740161583/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nexus-protocol/id6767498503/reviews)** |
| Number of ratings | **31** | 1 |
| Positive reviews | 84.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 75 MB | 135 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Sergei Bazarnik](https://appshunter.io/developer/1722100966) | [Jean Marc Moro](https://appshunter.io/developer/1896481117) |

## What reviewers say

### BTTF Clock

[App page](https://appshunter.io/ios/app/bttf-clock/id6740161583)

Experience the magic of time travel with a digital recreation of the iconic DeLorean dashboard. This app features customizable date panels, real-time clock updates, and authentic sound effects from the "Back to the Future" trilogy. It's designed to run smoothly on older devices, bringing cinematic nostalgia to your phone or tablet.

**Highlights:** Iconic time display panels, Customizable destination, present, and last departed times, Real-time accurate clock, Interactive interface for date changes, Authentic movie sound effects, Optimized for older devices

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

**In-app purchases:** none


### NEXUS Protocol

[App page](https://appshunter.io/ios/app/nexus-protocol/id6767498503)

Engage in a symbolic sci-fi experience by answering identity-based questions. Uncover your classified profile as Human, Hybrid, or Replicant through a dark, interactive interface exploring memory, empathy, and self-perception.

**Highlights:** Cinematic identity questions, Human, Hybrid, Replicant classification, Symbolic self-reflection, Dark interactive interface, Shareable identity certificate, Inner Portrait generation

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shadow Dossier | $7.99 | per month |
| One Shadow Reveal | $4.99 | one-time |


## Frequently asked questions

### Is BTTF Clock free?

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

### Is NEXUS Protocol free?

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

### Which has better reviews, BTTF Clock or NEXUS Protocol?

NEXUS Protocol is rated higher. BTTF Clock averages 4.6 out of 5 from 31 ratings, while NEXUS Protocol averages 5.0 from 1 ratings.

### Do BTTF Clock or NEXUS Protocol have ads?

Neither BTTF Clock nor NEXUS Protocol shows ads.

### Which is updated more often, BTTF Clock or NEXUS Protocol?

BTTF Clock ships an update every 6 weeks, and NEXUS Protocol every 2 weeks. Most recently, BTTF Clock was updated on October 13, 2026 and NEXUS Protocol on September 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.*