# Harmony vs Red Calm

The clearest difference is in-app purchases: Red Calm at none against Harmony's 18. Red Calm also leads on ads (none vs shown) and iOS requirement (12.0 vs 16.4). Harmony's advantage is update cadence (every 6 days vs monthly). On price and device support there is nothing between them.

Both are free to download. Harmony sells 13 in-app purchases, starting at $4.99 per 7 days. Red Calm asks for nothing beyond the download.

Harmony ships an update every 6 days, Red Calm monthly. The most recent releases landed on October 25, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Harmony | Red Calm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (10K ratings)](https://appshunter.io/ios/app/harmony-cycle-syncing-period/id6736703227/reviews)** | — |
| Number of ratings | **10K** | — |
| Positive reviews | 35.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 180 MB | 33 MB |
| Requires iOS | 16.4 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Rocapine](https://appshunter.io/developer/1755706866) | [Shenzhen Jiechenxin Technology Co., Ltd](https://appshunter.io/developer/1450224562) |

## What reviewers say

### Harmony

[App page](https://appshunter.io/ios/app/harmony-cycle-syncing-period/id6736703227)

This app helps you understand and sync your lifestyle with your natural body rhythms. It offers personalized guidance for energy, meals, movement, and mindset based on your cycle phase. It also includes smart tracking, daily insights, and an AI assistant for daily organization and self-awareness.

**Highlights:** Cycle Syncing Guidance, Smart Cycle Tracking, Daily Insights & Rituals, AI Lifestyle Assistant, Partner Connection, Privacy-Focused Data

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $4.99 | per 7 days |
| Harmony Monthly Plan | $9.99 | per month |
| Monthly Subscription | $14.99 | per month |
| Harmony Premium Pan | $14.99 | per month |
| Harmony Yearly Plan | $34.99 | per year |
| Yearly Premium | $34.99 | per year |
| Harmony Yearly Plan | $34.99 | per year |
| Harmony Premium | $39.99 | per 3 months |
| Premium Subscription | $39.99 | per 6 months |
| Yearly Subscription | $49.99 | per year |
| Yearly Subscription | $59.99 | per year |
| Harmony Yearly Plan | $79.99 | per year |
| Harmony Yearly Plan | $89.99 | per year |

**What reviewers like**

- 👍 Empowering experience
- 🚀 Easy to use
- 💡 Personalized insights
- 👍 Helpful for managing cycle
- 👍 Informative and useful

**What reviewers complain about**

- 🐛 Inaccurate calendar and period tracking
- 💰 Paid subscription required
- 🔧 Needs more customization options
- 👎 Issues with selecting period dates

**Reported bugs**

- Calendar issues with incorrect period dates
- Inability to select accurate period dates

**Requested features**

- More community features
- Longer meditation exercises
- Additional recipes and meal plans


### Red Calm

[App page](https://appshunter.io/ios/app/red-calm/id6746784444)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Harmony free?

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

### Is Red Calm free?

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

### Do Harmony or Red Calm have ads?

Harmony shows ads; Red Calm does not.

### Which is updated more often, Harmony or Red Calm?

Harmony ships an update every 6 days, and Red Calm monthly. Most recently, Harmony was updated on October 25, 2026 and Red Calm on October 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*