# Orbit vs LunaDay

The clearest difference is in-app purchases: Orbit at none against LunaDay's 1. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. LunaDay sells 1 one-off in-app purchase. Orbit asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Orbit against 5.0 for LunaDay. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Orbit ships an update every 3 weeks, LunaDay every 2 weeks. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Orbit | LunaDay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/orbit-period-tracker/id6757743456/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/lunaday/id6757979349/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 5 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [Mingkai Zhang](https://appshunter.io/developer/1868623449) | [想 李](https://appshunter.io/developer/1867214616) |

## What reviewers say

### Orbit

[App page](https://appshunter.io/ios/app/orbit-period-tracker/id6757743456)

A minimalist period tracker focused on user privacy, storing all data locally or via iCloud. It offers smart predictions for your next period and clear charts to understand cycle trends, with seamless integration with Apple Health.

**Highlights:** Privacy-focused data storage, Smart period prediction algorithm, Cycle trend analysis charts, Apple HealthKit integration, No account registration required, Offline capable tracking

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

**In-app purchases:** none


### LunaDay

[App page](https://appshunter.io/ios/app/lunaday/id6757979349)

A private, offline period tracker focused on digital minimalism. It offers a clean interface, smart predictions, and gentle reminders, with all data stored locally on your device. Enjoy a permanently ad-free experience with a one-time purchase for lifetime access.

**Highlights:** Absolute privacy with local data storage, Ultra-lightweight and fast performance, Permanently ad-free interface, Minimalist calendar view, Smart period prediction, Gentle reminders, iCloud sync for Apple devices

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 永久会员权益 | $0.99 | one-time |


## Frequently asked questions

### Is Orbit free?

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

### Is LunaDay free?

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

### Which has better reviews, Orbit or LunaDay?

Orbit and LunaDay are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Orbit or LunaDay have ads?

Neither Orbit nor LunaDay shows ads.

### Which is updated more often, Orbit or LunaDay?

Orbit ships an update every 3 weeks, and LunaDay every 2 weeks. Most recently, Orbit was updated on October 24, 2026 and LunaDay on October 14, 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.*