# Notarized vs BTTF Clock

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

Both are free to download. Notarized sells 1 one-off in-app purchase. BTTF Clock asks for nothing beyond the download.

Notarized 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 2, so its average is the more settled of the two.

Notarized ships an update every 6 days, BTTF Clock every 6 weeks. The most recent releases landed on October 4, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Notarized | BTTF Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/notarized-magic-and-mentalism/id6474781273/reviews)** | [4.6 (31 ratings)](https://appshunter.io/ios/app/bttf-clock/id6740161583/reviews) |
| Number of ratings | 2 | **31** |
| Positive reviews | — | 84.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 24 MB | 75 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [theory11.com](https://appshunter.io/developer/324247212) | [Sergei Bazarnik](https://appshunter.io/developer/1722100966) |

## What reviewers say

### Notarized

[App page](https://appshunter.io/ios/app/notarized-magic-and-mentalism/id6474781273)

This app enables mind-reading and drawing duplication using a borrowed phone. It turns any iPhone into an impression pad, allowing you to instantly see what a spectator writes or draws. Perform advanced mentalism effects with features like colored line support and lock screen mind-reading.

**Highlights:** Mind reading with borrowed phone, Drawing duplication, Impression pad functionality, Colored line support, Telegram support for thought transmission, API integration, Lock screen mind reading

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Base App Unlock | $99.99 | one-time |


### 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


## Frequently asked questions

### Is Notarized free?

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

### Is BTTF Clock free?

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

### Which has better reviews, Notarized or BTTF Clock?

Notarized is rated higher. Notarized averages 5.0 out of 5 from 2 ratings, while BTTF Clock averages 4.6 from 31 ratings.

### Do Notarized or BTTF Clock have ads?

Neither Notarized nor BTTF Clock shows ads.

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

Notarized ships an update every 6 days, and BTTF Clock every 6 weeks. Most recently, Notarized was updated on October 4, 2026 and BTTF Clock on October 17, 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.*