# FondFont · System Font Setup vs KERONG Lock

The clearest difference is price: KERONG Lock at Free against FondFont · System Font Setup's $0.99. KERONG Lock also leads on update cadence (weekly vs every 2 months) and iOS requirement (12.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

KERONG Lock is free to download; FondFont · System Font Setup costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

FondFont · System Font Setup ships an update every 2 months, KERONG Lock weekly. The most recent releases landed on September 24, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | FondFont · System Font Setup | KERONG Lock |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 53.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 5 MB | 131 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [贤安 陈](https://appshunter.io/developer/318015371) | [深圳市科荣实业有限公司](https://appshunter.io/developer/1475870198) |

## What reviewers say

### FondFont · System Font Setup

[App page](https://appshunter.io/ios/app/fondfont-system-font-setup/id842109099)

Install custom fonts for system-wide use on your iPad, iPhone, or iPod touch. Ensure your documents display correctly across various applications, including Office and Apple's productivity suites, by supporting common font file formats.

**Highlights:** System-wide font installation, Works with Office and Apple apps, Prevents font replacement in documents, Supports TTF, TTC, and OTF formats

**Features:** Vision Pro support

**In-app purchases:** none


### KERONG Lock

[App page](https://appshunter.io/ios/app/kerong-lock/id6578424967)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FondFont · System Font Setup free?

FondFont · System Font Setup costs $0.99, with no in-app purchases.

### Is KERONG Lock free?

KERONG Lock is free to download, with no in-app purchases.

### Do FondFont · System Font Setup or KERONG Lock have ads?

Neither FondFont · System Font Setup nor KERONG Lock shows ads.

### Which is updated more often, FondFont · System Font Setup or KERONG Lock?

FondFont · System Font Setup ships an update every 2 months, and KERONG Lock weekly. Most recently, FondFont · System Font Setup was updated on September 24, 2026 and KERONG Lock on June 11, 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.*