# Sleep Tracker App WellSleep vs CalmAnchor

The clearest difference is in-app purchases: CalmAnchor at none against Sleep Tracker App WellSleep's 3. Sleep Tracker App WellSleep's advantage is device support (3 vs 1) and iOS requirement (15.2 vs 18.0). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. Sleep Tracker App WellSleep sells 3 in-app purchases, starting at $9.99 per 7 days. CalmAnchor asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 20, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Sleep Tracker App WellSleep | CalmAnchor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calmanchor-panic-attack-help/id6761788508/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Freemium | Free with in-app purchases |
| Size | 378 MB | 78 MB |
| Requires iOS | **15.2** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hong Kong Zhufeng Technology Co., Limited](https://appshunter.io/developer/1747248515) | [GW Capital Partners LLC](https://appshunter.io/developer/951886331) |

## What reviewers say

### Sleep Tracker App WellSleep

[App page](https://appshunter.io/ios/app/sleep-tracker-app-wellsleep/id6759694103)

This app helps you understand and improve your sleep using your iPhone's sensors and sound analysis. It provides insights into sleep patterns, detects sounds, and offers a smart alarm to help you wake up refreshed. Access advanced features with a premium subscription.

**Highlights:** Phone-based sleep tracking, Sleep stage insights, Daily sleep score, Snore and sound detection, Sleep debt tracking, Smart wake alarm, Sleep sound library

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Pass | $9.99 | per 7 days |
| Annual Premium Pass | $59.99 | per year |
| Lifetime Unlimited Access | $69.99 | one-time |


### CalmAnchor

[App page](https://appshunter.io/ios/app/calmanchor-panic-attack-help/id6761788508)

This app provides immediate, practical tools for managing anxiety and building lasting calm. It offers evidence-based techniques, a personalized healing journey, and features like Panic SOS and guided journaling.

**Highlights:** Panic SOS for instant relief, Personalized 30-day healing plan, Guided daily journal entries, Mood and anxiety analytics, Healing streaks for motivation, Private journaling, no account needed

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

**In-app purchases:** none


## Frequently asked questions

### Is Sleep Tracker App WellSleep free?

Sleep Tracker App WellSleep is free to download, with in-app purchases available.

### Is CalmAnchor free?

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

### Do Sleep Tracker App WellSleep or CalmAnchor have ads?

Neither Sleep Tracker App WellSleep nor CalmAnchor shows ads.

### Which is updated more often, Sleep Tracker App WellSleep or CalmAnchor?

Sleep Tracker App WellSleep ships an update every 3 weeks, and CalmAnchor every 3 weeks. Most recently, Sleep Tracker App WellSleep was updated on October 20, 2026 and CalmAnchor on October 7, 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.*