# Sero. vs Judy

The clearest difference is in-app purchases: Sero. at none against Judy's 1. Judy's advantage is update cadence (every 3 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Judy sells 1 in-app purchase, starting at $14.99 per month. Sero. asks for nothing beyond the download.

Sero. ships an update every 2 months, Judy every 3 days. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Sero. | Judy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 35 MB | 81 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Maayan Bar Noy](https://appshunter.io/developer/1743170985) | [withjudy, LLC](https://appshunter.io/developer/1895605054) |

## What reviewers say

### Sero.

[App page](https://appshunter.io/ios/app/sero/id6499319326)

**In-app purchases:** none


### Judy

[App page](https://appshunter.io/ios/app/judy/id6764029536)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Judy Premium | $14.99 | per month |


## Frequently asked questions

### Is Sero. free?

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

### Is Judy free?

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

### Do Sero. or Judy have ads?

Neither Sero. nor Judy shows ads.

### Which is updated more often, Sero. or Judy?

Sero. ships an update every 2 months, and Judy every 3 days. Most recently, Sero. was updated on October 7, 2026 and Judy on October 11, 2026.

---

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