# one sec | screen time + focus vs ChalkTimerPRO

The clearest difference is price: one sec | screen time + focus at Free against ChalkTimerPRO's $5.99. one sec | screen time + focus also leads on ratings volume (24K vs 4) and device support (4 vs 2). ChalkTimerPRO's advantage is in-app purchases (none vs 6) and review sentiment (100% vs 76%). On update cadence and ads there is nothing between them.

one sec | screen time + focus is free to download; ChalkTimerPRO costs $5.99 up front. one sec | screen time + focus sells 6 in-app purchases, starting at $2.99 per month. ChalkTimerPRO asks for nothing beyond the download.

ChalkTimerPRO holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: one sec | screen time + focus has 24K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 76% of one sec | screen time + focus's written reviews are positive against 100% of ChalkTimerPRO's.

one sec | screen time + focus ships an update every 2 weeks, ChalkTimerPRO every 10 days. The most recent releases landed on September 28, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | one sec | screen time + focus | ChalkTimerPRO |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | [4.8 (24K ratings)](https://appshunter.io/ios/app/one-sec-screen-time-plus-focus/id1532875441/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/chalktimerpro/id6754783505/reviews)** |
| Number of ratings | **24K** | 4 |
| Positive reviews | 75.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Monetization | **Freemium** | Paid |
| Size | 368 MB | 19 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [riedel.wtf apps S.L.](https://appshunter.io/developer/517545753) | [Kristo Designs LLC (US)](https://appshunter.io/developer/480588450) |

## What reviewers say

### one sec | screen time + focus

[App page](https://appshunter.io/ios/app/one-sec-screen-time-plus-focus/id1532875441)

This app introduces intentional friction to distracting apps and websites, helping users reduce screen time and improve focus. It delays access rather than blocking, promoting long-term behavioral change. Integrates with other apps for enhanced productivity.

**Highlights:** Adds friction to distracting apps, Delays app access instead of blocking, Reduces app usage significantly, Doom Scroll Emergency Brake (Re-Intervention), Free Safari extension for websites, Integrates with other productivity apps

**Features:** Safari Extension, Family Sharing

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| one sec pro (1 Month) | $2.99 | per month |
| one sec pro \| Family Plan (1 Month) | $4.99 | per month |
| one sec pro (1 Year) | $19.99 | per year |
| one sec pro \| Family Plan (1 Year) | $29.99 | per year |
| one sec pro \| Lifetime | $99.99 | one-time |
| one sec pro \| Family Lifetime | $149.00 | one-time |

**What reviewers like**

- 🚀 Saves time
- 👍 Helps reduce screen time
- 💡 Customizable interventions
- 👍 Effective at curbing habits
- 👍 Intuitive and easy to use

**What reviewers complain about**

- 🐛 Buggy at times
- 💰 Premium features behind paywall
- 🔒 Concerns about privacy/data collection
- 🔒 Inability to fully disable the app
- 🐛 Inconsistent behavior across apps

**Reported bugs**

- App switching issues
- Interventions not triggering properly
- Inconsistent behavior with shortcuts
- Crashes and freezes on certain devices

**Requested features**

- Ability to block more apps for free
- Customizable intervention timers
- Scheduled app blocking/access
- Passcode protection for settings
- Sync settings across devices


### ChalkTimerPRO

[App page](https://appshunter.io/ios/app/chalktimerpro/id6754783505)

This app provides precision timing for gymnastics competitions, adhering to USA Gymnastics rules. It automates warm-up and competition timing, including fall and bump timers, reducing stress for coaches and meet directors. Features include dynamic time calculation, audio/visual cues, and offline functionality.

**Highlights:** USAG Rules-Based Warm-Up Timing, Competition Timing Suite, Fall and Bump Timers, Dynamic Time Calculation, Audio and Visual Cues, Offline Reliability (PRO version)

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

**In-app purchases:** none


## Frequently asked questions

### Is one sec | screen time + focus free?

one sec | screen time + focus is free to download, with in-app purchases available.

### Is ChalkTimerPRO free?

ChalkTimerPRO costs $5.99, with no in-app purchases.

### Which has better reviews, one sec | screen time + focus or ChalkTimerPRO?

ChalkTimerPRO is rated higher. one sec | screen time + focus averages 4.8 out of 5 from 24K ratings, while ChalkTimerPRO averages 5.0 from 4 ratings.

### Do one sec | screen time + focus or ChalkTimerPRO have ads?

Neither one sec | screen time + focus nor ChalkTimerPRO shows ads.

### Which is updated more often, one sec | screen time + focus or ChalkTimerPRO?

one sec | screen time + focus ships an update every 2 weeks, and ChalkTimerPRO every 10 days. Most recently, one sec | screen time + focus was updated on September 28, 2026 and ChalkTimerPRO on September 16, 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.*