# 3 Second vs ＋Syncro

The clearest difference is in-app purchases: ＋Syncro at none against 3 Second's 5. ＋Syncro also leads on iOS requirement (12.0 vs 18.6). 3 Second's advantage is update cadence (daily vs every 4 weeks). On price, ads and device support there is nothing between them.

Both are free to download. 3 Second sells 5 in-app purchases, starting at $3.99 per month. ＋Syncro asks for nothing beyond the download.

3 Second ships an update daily, ＋Syncro every 4 weeks. The most recent releases landed on September 1, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | 3 Second | ＋Syncro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/3-second-diary-short-form/id6740769130/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 94.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 4 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 266 MB | 54 MB |
| Requires iOS | 18.6 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Cheol Kim](https://appshunter.io/developer/1252540990) | [TETSUTARO YASUDA](https://appshunter.io/developer/1834295775) |

## What reviewers say

### 3 Second

[App page](https://appshunter.io/ios/app/3-second-diary-short-form/id6740769130)

Easily capture and organize daily moments with short video clips. This app simplifies journaling by focusing on brief recordings, offering features like automatic sorting, mood filters, and time-lapse views to help you revisit memories and track your personal growth.

**Highlights:** Quick 3-second video recording, Automatic calendar view, Mood-enhancing filters, Monthly & yearly timelapse, Time Machine for past dates

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| YesToDay Premium | $3.99 | per month |
| YesToDay Premium | $19.99 | per year |
| Yearly Special Price | $19.99 | per year |
| Upgrade Lifetime | $19.99 | one-time |
| Upgrade Lifetime | $29.99 | one-time |


### ＋Syncro

[App page](https://appshunter.io/ios/app/syncro/id6751253639)

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

**In-app purchases:** none


## Frequently asked questions

### Is 3 Second free?

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

### Is ＋Syncro free?

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

### Do 3 Second or ＋Syncro have ads?

Neither 3 Second nor ＋Syncro shows ads.

### Which is updated more often, 3 Second or ＋Syncro?

3 Second ships an update daily, and ＋Syncro every 4 weeks. Most recently, 3 Second was updated on September 1, 2026 and ＋Syncro on September 22, 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.*