# GRANFLOW vs BTTF Clock

The clearest difference is review sentiment: BTTF Clock at 84% against GRANFLOW's 0%. BTTF Clock also leads on device support (4 vs 2). GRANFLOW's advantage is update cadence (every 2 weeks vs every 5 weeks) and iOS requirement (8.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GRANFLOW ships an update every 2 weeks, BTTF Clock every 5 weeks. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | GRANFLOW | BTTF Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (32 ratings)](https://appshunter.io/ios/app/bttf-clock/id6740161583/reviews)** |
| Number of ratings | — | **32** |
| Positive reviews | 0.0% of reviews | **84.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 93 MB | 89 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Robert Ronash](https://appshunter.io/developer/466846595) | [Sergei Bazarnik](https://appshunter.io/developer/1722100966) |

## What reviewers say

### GRANFLOW

[App page](https://appshunter.io/ios/app/granflow/id1439676845)

Connect toy devices via Wi-Fi to take photos and save them to your mobile album. Control the camera with gestures for a hands-free experience.

**Highlights:** Wi-Fi toy device connection, Photo capture, Save photos/videos to album, Gesture-controlled photography

**Features:** macOS Compatibility

**In-app purchases:** none


### 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, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is GRANFLOW free?

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

### Is BTTF Clock free?

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

### Do GRANFLOW or BTTF Clock have ads?

Neither GRANFLOW nor BTTF Clock shows ads.

### Which is updated more often, GRANFLOW or BTTF Clock?

GRANFLOW ships an update every 2 weeks, and BTTF Clock every 5 weeks. Most recently, GRANFLOW was updated on October 25, 2026 and BTTF Clock 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.*