# Jargon vs Justdown

The clearest difference is update cadence: Justdown at every 2 days against Jargon's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

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

Jargon ships an update fortnightly, Justdown every 2 days. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Jargon | Justdown |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Size | 2 MB | 31 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Mathew Brown](https://appshunter.io/developer/6796435386) | [Hyungwon Jang](https://appshunter.io/developer/1879254690) |

## What reviewers say

### Jargon

[App page](https://appshunter.io/ios/app/jargon-hacker-dictionary/id6796777990)

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

**In-app purchases:** none


### Justdown

[App page](https://appshunter.io/ios/app/justdown-furigana-notes/id6805135080)

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

**In-app purchases:** none


## Frequently asked questions

### Is Jargon free?

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

### Is Justdown free?

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

### Do Jargon or Justdown have ads?

Neither Jargon nor Justdown shows ads.

### Which is updated more often, Jargon or Justdown?

Jargon ships an update fortnightly, and Justdown every 2 days. Most recently, Jargon was updated on October 25, 2026 and Justdown on October 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*