# XLocker vs RadBioCalc

The clearest difference is in-app purchases: RadBioCalc at none against XLocker's 12. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. XLocker sells 12 in-app purchases, starting at $3.99 per 7 days. RadBioCalc asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | XLocker | RadBioCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (1.3K ratings)](https://appshunter.io/ios/app/xlocker-control-screen-time/id6447595893/reviews)** | — |
| Number of ratings | **1.3K** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 96 MB | 41 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Nanjing Mairui Software Development Co., Ltd.](https://appshunter.io/developer/6783239280) | [Joe Chang](https://appshunter.io/developer/6806730010) |

## What reviewers say

### XLocker

[App page](https://appshunter.io/ios/app/xlocker-control-screen-time/id6447595893)

This app helps you regain control over your digital habits by managing distracting applications. You can lock or hide specific apps and set daily goals to dedicate more time to your priorities. It encourages a gradual approach to reducing app usage and fostering presence.

**Highlights:** Lock selected apps, Hide selected apps, Set daily protection goals, Track time set aside, Gradual approach to usage reduction

**Features:** Family Sharing

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to VIP | $3.99 | per 7 days |
| Upgrade to VIP | $5.99 | per month |
| Upgrade to VIP(3-day trial) | $9.99 | per 7 days |
| Upgrade to VIP | $9.99 | per 7 days |
| Upgrade to VIP | $11.99 | per month |
| Upgrade to VIP(3-day trial) | $15.99 | per 7 days |
| Upgrade to VIP | $19.99 | per year |
| Upgrade to VIP | $34.99 | per year |
| Upgrade to VIP(3-day trial) | $39.99 | per year |
| Upgrade to VIP | $69.99 | per year |
| Upgrade to lifetime VIP | $19.99 | one-time |
| Upgrade to lifetime VIP | $39.99 | one-time |

**What reviewers like**

- 👍 Nice
- 👍 This app is amazing
- 💯 Best screen time app
- 🙌 Thanks for dear developer

**What reviewers complain about**

- 🐛 Doesn't work on Facebook
- 🐛 Not Reliable
- 🐛 Not working
- 🐛 Glitchy and useless
- 🐛 Apps are missing on my phone

**Reported bugs**

- Occasional breaks where it gets stuck when typing password
- Unstable on iOS 16.5
- Search doesn't work well

**Requested features**

- Add Face ID
- 一键隐藏所有受保护的应用
- Advanced settings?


### RadBioCalc

[App page](https://appshunter.io/ios/app/radbiocalc-eqd2-calculator/id6806730008)

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

**In-app purchases:** none


## Frequently asked questions

### Is XLocker free?

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

### Is RadBioCalc free?

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

### Do XLocker or RadBioCalc have ads?

Neither XLocker nor RadBioCalc shows ads.

### Which is updated more often, XLocker or RadBioCalc?

XLocker ships an update weekly, and RadBioCalc weekly. Most recently, XLocker was updated on October 30, 2026 and RadBioCalc on October 31, 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.*