# Thinktankquiz vs Harmony

The clearest difference is iOS requirement: Thinktankquiz at 13.4 against Harmony's 16.4. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Thinktankquiz sells 3 one-off in-app purchases and Harmony sells 13 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Thinktankquiz | Harmony |
| --- | --- | --- |
| 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 | Yes |
| Ads | Yes | Yes |
| Update frequency | — | Every 6 days |
| Monetization | — | Free with in-app purchases |
| Size | 33 MB | 180 MB |
| Requires iOS | **13.4** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dimitar Kurtev](https://appshunter.io/developer/1575915826) | [Rocapine](https://appshunter.io/developer/1755706866) |

## What reviewers say

### Thinktankquiz

[App page](https://appshunter.io/ios/app/thinktankquiz/id6608971721)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thinktank App | $0.49 | one-time |
| Thinktank App | $0.79 | one-time |
| Thinktank App | $1.29 | one-time |


### 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


## Frequently asked questions

### Is Thinktankquiz free?

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

### Is Harmony free?

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

### Do Thinktankquiz or Harmony have ads?

Both Thinktankquiz and Harmony show 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.*