# ShiftLock vs C4 Now!

The clearest difference is price: C4 Now! at Free against ShiftLock's $6.99. C4 Now! also leads on ads (none vs shown) and rating (3.6 vs 3.2). ShiftLock's advantage is chart position (#47 vs unranked) and iOS requirement (15.0 vs 17.0). On review sentiment, ratings volume, in-app purchases and device support there is nothing between them.

C4 Now! is free to download; ShiftLock costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

C4 Now! holds the better App Store score, 3.6 against 3.2. Both are backed by a comparable volume of ratings — 41 and 54 respectively. Written reviews complicate that: 35% of ShiftLock's written reviews are positive against 29% of C4 Now!'s, so the app with the better star average is not the one people write more warmly about.

ShiftLock ships an update every 5 months, C4 Now! every 3 weeks. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | ShiftLock | C4 Now! |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | [3.2 (41 ratings)](https://appshunter.io/ios/app/shiftlock/id1080928307/reviews) | **[3.6 (54 ratings)](https://appshunter.io/ios/app/c4-now/id1535968429/reviews)** |
| Number of ratings | 41 | **54** |
| Positive reviews | **35.1% of reviews** | 29.2% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Ad-supported | **Free** |
| Best chart rank | **#47** | — |
| Size | 55 MB | 69 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Mark Knowles](https://appshunter.io/developer/1080928306) | [Harris County Constable Precinct 4](https://appshunter.io/developer/1535968431) |

## What reviewers say

### ShiftLock

[App page](https://appshunter.io/ios/app/shiftlock/id1080928307)

**Currently charting:** #47 Top Paid · Reference (US App Store)

Access a vast database of vehicle electronic shift information for models from 1985 to the present. Quickly find solutions to avoid towing, reduce vehicle damage, and save time roadside. Content is updated regularly for accuracy.

**Highlights:** Extensive vehicle model database, USA, European, and foreign models, 1985 to current electronic shifts, Reduce towing and vehicle damage, Save release information offline, Fast learning curve

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

**In-app purchases:** none


### C4 Now!

[App page](https://appshunter.io/ios/app/c4-now/id1535968429)

This app enhances communication between residents and law enforcement. It allows users to report non-emergency crimes, submit anonymous tips, and access public safety news. It serves as a public outreach tool for improved community engagement.

**Highlights:** Report non-emergency crimes, Submit anonymous tips, Access public safety news, Interactive community features, Direct connection to law enforcement

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ShiftLock free?

ShiftLock costs $6.99, with no in-app purchases.

### Is C4 Now! free?

C4 Now! is free to download, with no in-app purchases.

### Which has better reviews, ShiftLock or C4 Now!?

C4 Now! is rated higher. ShiftLock averages 3.2 out of 5 from 41 ratings, while C4 Now! averages 3.6 from 54 ratings.

### Do ShiftLock or C4 Now! have ads?

ShiftLock shows ads; C4 Now! does not.

### Which is updated more often, ShiftLock or C4 Now!?

ShiftLock ships an update every 5 months, and C4 Now! every 3 weeks. Most recently, ShiftLock was updated on October 13, 2026 and C4 Now! on October 7, 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.*