# SmartCuffs vs Day Zero

The clearest difference is rating: Day Zero at 5.0 against SmartCuffs's 2.4. SmartCuffs's advantage is ratings volume (36 vs 1) and device support (3 vs 1). 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.

Day Zero holds the better App Store score, 5.0 against 2.4. That said, the two scores are not equally well evidenced: SmartCuffs has 36 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | SmartCuffs | Day Zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (36 ratings)](https://appshunter.io/ios/app/smartcuffs/id1632227731/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/day-zero-habit-ledger/id6787778663/reviews)** |
| Number of ratings | **36** | 1 |
| Positive reviews | 20.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free | Free |
| Size | 37 MB | 3 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Smart Tools Plus, LLC](https://appshunter.io/developer/1520284709) | [Quentin Perrot](https://appshunter.io/developer/6787778666) |

## What reviewers say

### SmartCuffs

[App page](https://appshunter.io/ios/app/smartcuffs/id1632227731)

This app pairs with specialized cuffs to enable Blood Flow Restriction (BFR) training. BFR uses low-intensity exercise with reduced arterial flow to achieve results similar to high-intensity training, allowing for muscle growth and strength gains with lighter loads.

**Highlights:** Connects to SmartCuffs 4.0 devices, Enables Blood Flow Restriction (BFR) training, Supports low-intensity exercise, Utilizes TriPressure technology, Offers continuous BFR, Offers intermittent BFR, Offers resting BFR

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

**In-app purchases:** none


### Day Zero

[App page](https://appshunter.io/ios/app/day-zero-habit-ledger/id6787778663)

This app helps you track habits by displaying the number of days since you last performed a specific action. It offers flexible scheduling, personalized feedback, and home screen widgets for easy logging. Designed for privacy, it stores all data locally on your device.

**Highlights:** Days since last action counter, Home screen widgets for logging, Flexible daily or weekly scheduling, Personalized voice and 'why' prompts, Pause and resume habits, Private by design, no accounts or servers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SmartCuffs free?

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

### Is Day Zero free?

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

### Which has better reviews, SmartCuffs or Day Zero?

Day Zero is rated higher. SmartCuffs averages 2.4 out of 5 from 36 ratings, while Day Zero averages 5.0 from 1 ratings.

### Do SmartCuffs or Day Zero have ads?

Neither SmartCuffs nor Day Zero shows ads.

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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.*