ShiftLock vs C4 Now!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ShiftLock
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.
- 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
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Large database of USA, European, and foreign models from 1985 up to the most recent electronic shifts. No more fumbling at the scene of a wreck, or wasted time chasing down customer’s keys. Your PPIs just got easier. With this app, you always have an alternative to dragging. Reduce damage to valuable company equipment and customer's vehicles. Ultra fast learning curve. You'll be comfortable quickly using this app on rotations and TOLs where time really matters. We reduce your time roadside with the ability to save the casualty vehicle's release info for later use, or for use in areas with poor cellular service. Content is updated regularly.
C4 Now!
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.
- Report non-emergency crimes
- Submit anonymous tips
- Access public safety news
- Interactive community features
- Direct connection to law enforcement
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The C4 Now! (TX) mobile application is an interactive app developed to help improve communication with area residents. The Harris County Constable Precinct 4 App allows residents to connect with the Harris County Constable Precinct 4 by reporting crimes, submitting tips, and other interactive features, as well as providing the community the latest public safety news and information. The app is another public outreach effort developed by the Harris County Constable Precinct 4 to improve communication with county residents and visitors. This app is not intended to be used to report emergency situations. Please call 911 in an emergency.
Screenshots
Verdict
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 (#35 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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | ShiftLock | C4 Now! |
|---|---|---|
| Price | $6.99 | Free — better |
| Rating | 3.2 (41 ratings) | 3.6 (54 ratings) — better |
| Positive reviews | 35.1% of reviews — better | 29.2% of reviews |
| Number of ratings | 41 | 54 — better |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Best chart rank | #35 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 55 MB | 69 MB |
| Age rating | 4+ | 12+ |
| Developer | Mark Knowles | Harris County Constable Precinct 4 |
Customer experience
ShiftLock
C4 Now!
In-app purchases
ShiftLock
No in-app purchases
C4 Now!
No in-app purchases
Questions
Is ShiftLock free?
Is C4 Now! free?
Which has better reviews, ShiftLock or C4 Now!?
Do ShiftLock or C4 Now! have ads?
Which is updated more often, ShiftLock or C4 Now!?
Other comparisons
