# 15그램 vs 77F

The clearest difference is ads: 77F at none against 15그램's shown. 77F also leads on update cadence (monthly vs every 4 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

15그램 ships an update every 4 months, 77F monthly. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 15그램 | 77F |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Monthly** |
| Size | 11 MB | 61 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [15GRAM Co., Ltd.](https://appshunter.io/developer/1607634922) | [(주)반티룩스](https://appshunter.io/developer/1883637016) |

## What reviewers say

### 15그램

[App page](https://appshunter.io/ios/app/15/id1607634920)

**Features:** macOS Compatibility

**In-app purchases:** none


### 77F

[App page](https://appshunter.io/ios/app/77f/id6760285959)

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

**In-app purchases:** none


## Frequently asked questions

### Is 15그램 free?

15그램 is free to download, with no in-app purchases.

### Is 77F free?

77F is free to download, with no in-app purchases.

### Do 15그램 or 77F have ads?

15그램 shows ads; 77F does not.

### Which is updated more often, 15그램 or 77F?

15그램 ships an update every 4 months, and 77F monthly. Most recently, 15그램 was updated on October 11, 2026 and 77F on October 7, 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.*