# Four Days vs Yin Timer

The clearest difference is price: Yin Timer at Free against Four Days's $1.99. Yin Timer also leads on rating (5.0 vs 2.6). Four Days's advantage is ratings volume (8 vs 1). On update cadence, ads, in-app purchases and device support there is nothing between them.

Yin Timer is free to download; Four Days costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Yin Timer holds the better App Store score, 5.0 against 2.6. That said, the two scores are not equally well evidenced: Four Days has 8 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Four Days | Yin Timer |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [2.6 (8 ratings)](https://appshunter.io/ios/app/four-days/id1467531634/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/yin-timer/id1537454832/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Paid | **Free** |
| Size | 23 MB | 4 MB |
| Requires iOS | **13.4** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sergio Gutierrez Mota](https://appshunter.io/developer/1467531633) | [Kodare](https://appshunter.io/developer/357998997) |

## What reviewers say

### Four Days

[App page](https://appshunter.io/ios/app/four-days/id1467531634)

This app helps manage food allergies by tracking your diet. It guides you through a rotation diet to avoid repetitive food consumption and prevent new intolerances. Maintain dietary diversity and support gut health.

**Highlights:** Rotation diet tracking, Avoid food repetition, Prevent new intolerances, Enhance nutrient diversity, Support gut healing

**Features:** macOS Compatibility

**In-app purchases:** none


### Yin Timer

[App page](https://appshunter.io/ios/app/yin-timer/id1537454832)

A discreet timer designed for calm activities like yoga or meditation. Set your desired duration, and the analog face completes one turn, providing a peaceful timekeeping experience without distracting ticking.

**Highlights:** Calm and discreet timer, Ideal for yoga and meditation, Analog face timekeeping, Customizable duration, No distracting ticking

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

**In-app purchases:** none


## Frequently asked questions

### Is Four Days free?

Four Days costs $1.99, with no in-app purchases.

### Is Yin Timer free?

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

### Which has better reviews, Four Days or Yin Timer?

Yin Timer is rated higher. Four Days averages 2.6 out of 5 from 8 ratings, while Yin Timer averages 5.0 from 1 ratings.

### Do Four Days or Yin Timer have ads?

Neither Four Days nor Yin Timer shows ads.

### Which is updated more often, Four Days or Yin Timer?

Four Days ships an update every 4 months, and Yin Timer every 4 months. Most recently, Four Days was updated on October 1, 2026 and Yin Timer on October 6, 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.*