# Selene vs Periodically

The clearest difference is update cadence: Periodically at fortnightly against Selene's monthly. Periodically also leads on iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Selene sells 1 one-off in-app purchase and Periodically sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Selene ships an update monthly, Periodically fortnightly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Selene | Periodically |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/periodically/id6761598562/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 41 MB | 25 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Aiofeffect LLC](https://appshunter.io/developer/1833105894) | [Danna Alexandra Garcia Lamas](https://appshunter.io/developer/1890376940) |

## What reviewers say

### Selene

[App page](https://appshunter.io/ios/app/selene-period-tracker/id6757160714)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Selene Lifetime | $1.99 | one-time |


### Periodically

[App page](https://appshunter.io/ios/app/periodically/id6761598562)

Track your menstrual cycle with a simple, private, and focused experience. Log periods, moods, and symptoms, and view historical data. An optional one-time upgrade unlocks advanced statistics and customization.

**Highlights:** Cycle tracking, Mood and symptom logging, History view, Next cycle estimate, Advanced statistics, PDF export, Custom themes

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Periodically Premium | $5.99 | one-time |


## Frequently asked questions

### Is Selene free?

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

### Is Periodically free?

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

### Do Selene or Periodically have ads?

Neither Selene nor Periodically shows ads.

### Which is updated more often, Selene or Periodically?

Selene ships an update monthly, and Periodically fortnightly. Most recently, Selene was updated on October 31, 2026 and Periodically on October 31, 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.*