# MOON vs Vow Prep

The clearest difference is ads: Vow Prep at none against MOON's shown. MOON's advantage is update cadence (every 2 days vs every 3 weeks) and iOS requirement (12.0 vs 18.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. MOON sells 1 in-app purchase, starting at $29.99 per year and Vow Prep sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

MOON ships an update every 2 days, Vow Prep every 3 weeks. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | MOON | Vow Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vow-prep-before-you-commit/id6793473280/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 129 MB | 85 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [淞阁 于](https://appshunter.io/developer/1717419442) | [Thanh My DUONG](https://appshunter.io/developer/1882647935) |

## What reviewers say

### MOON

[App page](https://appshunter.io/ios/app/moon-and/id6476828985)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 年度会员 | $29.99 | per year |


### Vow Prep

[App page](https://appshunter.io/ios/app/vow-prep-before-you-commit/id6793473280)

This app helps couples about to commit to a life together have essential conversations about their future. It offers guided discussions across various life topics, allowing partners to answer privately and then compare responses to foster open communication.

**Highlights:** Guided conversation cards, 9 topic decks, Private answering, Side-by-side answer comparison, One-time purchase, No subscription required

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vow Prep Premium | $6.99 | one-time |


## Frequently asked questions

### Is MOON free?

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

### Is Vow Prep free?

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

### Do MOON or Vow Prep have ads?

MOON shows ads; Vow Prep does not.

### Which is updated more often, MOON or Vow Prep?

MOON ships an update every 2 days, and Vow Prep every 3 weeks. Most recently, MOON was updated on November 8, 2026 and Vow Prep 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.*