# Coherence vs Sun Day Tracker

The clearest difference is in-app purchases: Sun Day Tracker at none against Coherence's 6. Coherence's advantage is update cadence (every 4 days vs monthly) and ratings volume (566 vs 26). On price, review sentiment and ads there is nothing between them.

Both are free to download. Coherence sells 6 in-app purchases, starting at $14.99 per month. Sun Day Tracker asks for nothing beyond the download.

Coherence holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Coherence has 566 ratings behind it against 26, so its average is the more settled of the two. Written reviews split almost evenly too, at 84% and 83% positive.

Coherence ships an update every 4 days, Sun Day Tracker monthly. The most recent releases landed on September 27, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Coherence | Sun Day Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (566 ratings)](https://appshunter.io/ios/app/coherence-breathwork/id6740344645/reviews)** | [4.6 (26 ratings)](https://appshunter.io/ios/app/sun-day-tracker/id6748545544/reviews) |
| Number of ratings | **566** | 26 |
| Positive reviews | **84.0% of reviews** | 83.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Monthly |
| Monetization | Subscription | **Free** |
| Size | 176 MB | 1 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [John Sweeney](https://appshunter.io/developer/1789596075) | [permissionless tech, llc](https://appshunter.io/developer/1824145893) |

## What reviewers say

### Coherence

[App page](https://appshunter.io/ios/app/coherence-breathwork/id6740344645)

Master your nervous system through guided breathwork. Access over 500 breathing patterns to shift your state, from calm and focus to energy and sleep. Connect with a global community in live sessions and create custom routines.

**Highlights:** Nervous system interface via breath, Shift states: calm, focus, energy, sleep, Daily global live breathing sessions, 500+ research-backed breathing patterns, Custom breathing sequence creator, Progress tracking and stats, Community features and leaderboards

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coherence Monthly Membership | $14.99 | per month |
| Coherence Membership | $69.99 | per year |
| Coherence Friend Pass | $69.99 | per year |
| Coherence Membership | $69.99 | per year |
| Coherence Membership | $69.99 | per year |
| Coherence | $69.99 | per year |

**What reviewers like**

- 👍 Excellent accessibility and interface
- 🚀 Great integration into daily routine
- 👍 Amazing experience and awesome sequences
- 👍 Breathwork is one of the best things for health
- 👍 Helps cut down on vices, boost vibes, and be a smooth operator


### Sun Day Tracker

[App page](https://appshunter.io/ios/app/sun-day-tracker/id6748545544)

Monitor your daily vitamin D absorption from sunlight exposure. This straightforward application helps you keep track of your sun-related vitamin D intake.

**Highlights:** Track daily vitamin D intake, Sunlight exposure monitoring, Simple interface, Daily tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Coherence free?

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

### Is Sun Day Tracker free?

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

### Which has better reviews, Coherence or Sun Day Tracker?

Coherence is rated higher. Coherence averages 4.8 out of 5 from 566 ratings, while Sun Day Tracker averages 4.6 from 26 ratings.

### Do Coherence or Sun Day Tracker have ads?

Neither Coherence nor Sun Day Tracker shows ads.

### Which is updated more often, Coherence or Sun Day Tracker?

Coherence ships an update every 4 days, and Sun Day Tracker monthly. Most recently, Coherence was updated on September 27, 2026 and Sun Day Tracker on September 19, 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.*