# Sub vs Shared Couple Diary ~ Futari

The clearest difference is update cadence: Sub at every 3 days against Shared Couple Diary ~ Futari's every 3 weeks. Sub also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sub sells 2 in-app purchases, starting at $3.99 per month and Shared Couple Diary ~ Futari sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Sub ships an update every 3 days, Shared Couple Diary ~ Futari every 3 weeks. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sub | Shared Couple Diary ~ Futari |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shared-couple-diary-futari/id6789121884/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 48 MB | 62 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Berkan ARIKAN](https://appshunter.io/developer/1896728571) | [Kosei Endo](https://appshunter.io/developer/6789014593) |

## What reviewers say

### Sub

[App page](https://appshunter.io/ios/app/sub-couples-journal/id6770263181)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sub Pro Monthly | $3.99 | per month |
| Sub Pro Annual | $34.99 | per year |


### Shared Couple Diary ~ Futari

[App page](https://appshunter.io/ios/app/shared-couple-diary-futari/id6789121884)

This app offers a private space for couples to journal their thoughts and feelings separately, then share them simultaneously. It provides daily prompts, gentle phrasing suggestions for difficult conversations, and features to strengthen your connection.

**Highlights:** Shared private diary entries, Daily relationship prompts, Gentle phrasing suggestions, Simultaneous entry reveal, Days-together counter, Couple quizzes, Anniversary countdowns

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Futari pro | $1.99 | per month |
| Futari Premium | $19.99 | per year |


## Frequently asked questions

### Is Sub free?

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

### Is Shared Couple Diary ~ Futari free?

Shared Couple Diary ~ Futari is free to download, with in-app purchases available.

### Do Sub or Shared Couple Diary ~ Futari have ads?

Neither Sub nor Shared Couple Diary ~ Futari shows ads.

### Which is updated more often, Sub or Shared Couple Diary ~ Futari?

Sub ships an update every 3 days, and Shared Couple Diary ~ Futari every 3 weeks. Most recently, Sub was updated on October 25, 2026 and Shared Couple Diary ~ Futari 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.*