# Euki vs Stardust Period Tracker

The clearest difference is rating: Stardust Period Tracker at 4.8 against Euki's 4.1. Stardust Period Tracker also leads on ratings volume (117K vs 116) and chart position (#40 vs unranked). Euki's advantage is in-app purchases (none vs 21) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Stardust Period Tracker sells 20 in-app purchases, starting at $2.99 per 7 days. Euki asks for nothing beyond the download.

Stardust Period Tracker holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: Stardust Period Tracker has 117K ratings behind it against 116, so its average is the more settled of the two. Written reviews complicate that: 70% of Euki's written reviews are positive against 55% of Stardust Period Tracker's, so the app with the better star average is not the one people write more warmly about.

Euki ships an update every 3 weeks, Stardust Period Tracker every 2 weeks. Both last shipped on September 28, 2026.

## The numbers

| Metric | Euki | Stardust Period Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (116 ratings)](https://appshunter.io/ios/app/euki/id1469213846/reviews) | **[4.8 (117K ratings)](https://appshunter.io/ios/app/stardust-period-tracker/id1495829322/reviews)** |
| Number of ratings | 116 | **117K** |
| Positive reviews | **70.2% of reviews** | 55.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#40** |
| Size | 51 MB | 188 MB |
| Requires iOS | **13.4** | 15.2 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Euki, Inc.](https://appshunter.io/developer/1749121306) | [Stardust App LLC (New York)](https://appshunter.io/developer/1495829321) |

## What reviewers say

### Euki

[App page](https://appshunter.io/ios/app/euki/id1469213846)

This app offers comprehensive sexual health information and tracking tools with a strong emphasis on user privacy. It allows for customizable health tracking, period predictions, and access to a content library vetted by experts. Additionally, it features a care navigator to find reproductive health services.

**Highlights:** Customizable health tracking, Period and cycle predictions, Content library on sexual health, Care Navigator for health services, PIN protection for data, Anonymous data storage

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🔒 Strong privacy protection and data security
- 💰 Completely free with no paywalls or premium features
- 📱 User-friendly and intuitive interface
- 🎓 Comprehensive reproductive health education resources
- 🔐 PIN protection with fake password decoy feature

**What reviewers complain about**

- 🐛 Frequent app crashes and glitches
- ❌ No dark mode option
- 📤 Cannot export or transfer data between devices
- ⏰ Lacks notification/reminder features for upcoming periods
- 🎨 Unappealing graphics and design aesthetic (subjective)

**Reported bugs**

- App crashes when accessing certain features
- Calendar display missing days
- Randomly added contraceptive shot entries to all logged days
- App crashes when editing past bleeding logs
- Cycle length recalculation not updating after new data

**Requested features**

- Dark mode support
- Data export/import functionality
- Period and ovulation notifications/reminders
- Additional symptom tracking options (back pain, leg cramps, sleep changes, bowel changes, memory issues)
- Basal body temperature tracking


### Stardust Period Tracker

[App page](https://appshunter.io/ios/app/stardust-period-tracker/id1495829322)

**Currently charting:** #40 Top Free · Health & Fitness, #81 Top Grossing · Health & Fitness (US App Store)

This health app helps you understand and track your menstrual cycle, ovulation, and pregnancy. It combines scientific data with ancient wisdom and astronomy to provide personalized insights and goal manifestation tools. Features include period predictions, symptom tracking, and lunar synchronicity.

**Highlights:** Period and ovulation prediction, Pregnancy tracking with AR, Daily personalized insights, Symptom and mood tracking, Lunar cycle synchronization, Goal manifestation tools

**Features:** Vision Pro support

**In-app purchases (20)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access | $2.99 | per 7 days |
| All Access | $3.99 | per month |
| All Access | $4.99 | per month |
| Monthly Plan | $6.99 | per month |
| Monthly plan with 7 day trial | $6.99 | per month |
| All Access | $24.99 | per year |
| Annual plan with 7-days trial | $24.99 | per year |
| $24.99/year with 3-days trial | $24.99 | per year |
| Annual Plan | $29.99 | per year |
| Annual Plan with 1 month trial | $29.99 | per year |
| Annual Plan with 3-days trial | $29.99 | per year |
| Stardust All Access | $29.99 | per year |
| All Access | $39.99 | per year |
| Annual Plan with 7-days trial | $39.99 | per year |
| Stardust All Access | $39.99 | per year |
| Annual Plan with 3-days trial | $39.99 | per year |
| Annual plan with 7-days trial | $49.99 | per year |
| $49.99/year | $49.99 | per year |
| $89.99/year with 7-day trial | $89.99 | per year |
| $89.99/year | $89.99 | per year |

**What reviewers like**

- 💕 Beautiful, aesthetically pleasing design
- 🌙 Syncs with moon cycles
- 🌟 Cute, quirky messages and notifications
- 🤝 Owned and run by women
- 🔒 Protects user privacy and data

**What reviewers complain about**

- 🐛 Frequent glitches, bugs, and crashes
- 🔁 Resets/deletes user data after updates
- 🕰️ Inaccurate period predictions and cycle tracking
- 🔒 Concerns about data privacy and sharing
- 🤔 Confusing or unintuitive interface

**Reported bugs**

- Logging out and losing all user data
- Inability to update or adjust cycle information
- Calendar and cycle predictions not syncing correctly
- Notifications not working as expected
- Certain features/sections not loading properly

**Requested features**

- Add more symptom and mood tracking options
- Implement graph/chart view to visualize cycle data
- Allow custom notes and reminders
- Provide more personalized insights and recommendations
- Improve sync and data backup functionality


## Frequently asked questions

### Is Euki free?

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

### Is Stardust Period Tracker free?

Stardust Period Tracker is free to download, with in-app purchases available.

### Which has better reviews, Euki or Stardust Period Tracker?

Stardust Period Tracker is rated higher. Euki averages 4.1 out of 5 from 116 ratings, while Stardust Period Tracker averages 4.8 from 117K ratings.

### Do Euki or Stardust Period Tracker have ads?

Stardust Period Tracker shows ads; Euki does not.

### Which is updated more often, Euki or Stardust Period Tracker?

Euki ships an update every 3 weeks, and Stardust Period Tracker every 2 weeks. Most recently, Euki was updated on September 28, 2026 and Stardust Period Tracker on September 28, 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.*