# Cycle vs Selfletter

The clearest difference is ads: Cycle at none against Selfletter's shown. Selfletter's advantage is update cadence (every 4 days vs fortnightly). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Cycle sells 2 in-app purchases, starting at $1.99 per month and Selfletter sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

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

Cycle ships an update fortnightly, Selfletter every 4 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Cycle | Selfletter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/cycle-period-tracker/id6748954495/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/selfletter-time-capsule-diary/id6768904497/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 58 MB | 17 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lightli LTD](https://appshunter.io/developer/1677809408) | [Amar Labs Inc.](https://appshunter.io/developer/1886277806) |

## What reviewers say

### Cycle

[App page](https://appshunter.io/ios/app/cycle-period-tracker/id6748954495)

This app helps you track your menstrual cycle and pregnancy journey with a calm, weather-inspired interface. It offers predictions for periods and ovulation, symptom logging, and pregnancy milestones. Plan your life around your body's rhythms with helpful insights and reminders.

**Highlights:** Period and ovulation tracking, Pregnancy journey companion, Symptom and mood logging, Customizable reminders, Cloud sync across devices, Data export

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium · Monthly | $1.99 | per month |
| Premium · Yearly | $14.99 | per year |


### Selfletter

[App page](https://appshunter.io/ios/app/selfletter-time-capsule-diary/id6768904497)

This app allows you to write letters to your future self, to be delivered the next day, week, month, or even years later. It functions as a private diary that reflects on your present and anticipates your future.

**Highlights:** Write letters to your future self, Time capsule feature for delayed delivery, Daily letter delivery, Private storage on device and iCloud, Searchable letter archive, Customizable paper styles

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Selfletter Premium · Monthly | $4.99 | per month |
| Selfletter Premium · Yearly | $29.99 | per year |
| Selfletter Premium · Lifetime | $89.99 | one-time |


## Frequently asked questions

### Is Cycle free?

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

### Is Selfletter free?

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

### Which has better reviews, Cycle or Selfletter?

Cycle and Selfletter are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Cycle or Selfletter have ads?

Selfletter shows ads; Cycle does not.

### Which is updated more often, Cycle or Selfletter?

Cycle ships an update fortnightly, and Selfletter every 4 days. Most recently, Cycle was updated on October 30, 2026 and Selfletter 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.*