# Limit Screen Time | Focus Lock vs Diplopia Simulator

The clearest difference is price: Limit Screen Time | Focus Lock at Free against Diplopia Simulator's $6.99. Diplopia Simulator's advantage is in-app purchases (none vs 2) and update cadence (every 10 days vs every 6 weeks). On ads, device support and iOS requirement there is nothing between them.

Limit Screen Time | Focus Lock is free to download; Diplopia Simulator costs $6.99 up front. Limit Screen Time | Focus Lock sells 2 in-app purchases, starting at $3.99 per 7 days. Diplopia Simulator asks for nothing beyond the download.

Limit Screen Time | Focus Lock ships an update every 6 weeks, Diplopia Simulator every 10 days. The most recent releases landed on October 14, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Limit Screen Time | Focus Lock | Diplopia Simulator |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | **[4.4 (1.7K ratings)](https://appshunter.io/ios/app/limit-screen-time-focus-lock/id1368396053/reviews)** | — |
| Number of ratings | **1.7K** | — |
| Positive reviews | 85.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 10 days** |
| Monetization | Free | — |
| Best chart rank | — | **#196** |
| Size | 135 MB | 17 MB |
| Requires iOS | 16.6 | 16.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [My Media and Entertainment](https://appshunter.io/developer/1833250028) | [Wicher B Donga](https://appshunter.io/developer/1758903333) |

## What reviewers say

### Limit Screen Time | Focus Lock

[App page](https://appshunter.io/ios/app/limit-screen-time-focus-lock/id1368396053)

Take back control of your time and boost productivity with this app. Block distracting social media, games, and websites by schedule or location. Utilize focus sessions with background music to enhance concentration and achieve digital balance.

**Highlights:** Block social media, games, and websites, Schedule restrictions by time or location, Focus sessions with timer and background music, Detailed usage statistics, Automatic blocking based on rules, Customizable block types

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $3.99 | per 7 days |
| Monthly Access | $10.99 | per month |

**What reviewers like**

- 👍 Easy to use
- 🚀 Quick and simple test
- 💡 Helpful for monitoring hearing health
- 🔍 Provides detailed results
- 📊 Compares to age group

**What reviewers complain about**

- 🐛 Inconsistent results compared to professional tests
- 🔊 Volume levels too high during test
- 🤔 Requires review before using
- 🔒 Accessibility issues for visually impaired users

**Reported bugs**

- Test freezes or doesn't respond when trying to retake
- Audiogram results display incorrectly (e.g. reversed dB scale)

**Requested features**

- Ability to save and track test results over time
- Option to test with device speakers, not just headphones
- More detailed instructions and guidance during the test


### Diplopia Simulator

[App page](https://appshunter.io/ios/app/diplopia-simulator/id6759217130)

**Currently charting:** #196 Top Paid · Health & Fitness (US App Store)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Limit Screen Time | Focus Lock free?

Limit Screen Time | Focus Lock is free to download, with in-app purchases available.

### Is Diplopia Simulator free?

Diplopia Simulator costs $6.99, with no in-app purchases.

### Do Limit Screen Time | Focus Lock or Diplopia Simulator have ads?

Neither Limit Screen Time | Focus Lock nor Diplopia Simulator shows ads.

### Which is updated more often, Limit Screen Time | Focus Lock or Diplopia Simulator?

Limit Screen Time | Focus Lock ships an update every 6 weeks, and Diplopia Simulator every 10 days. Most recently, Limit Screen Time | Focus Lock was updated on October 14, 2026 and Diplopia Simulator on October 1, 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.*