NICE DIGI vs Crash Engine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NICE DIGI
Manage your smart door locks remotely. Unlock or lock your doors, share access with family and visitors, and track activity logs. Generate temporary passcodes for guests.
- Remote lock/unlock
- Share access permissions
- Initialize and set lock functions
- Query unlock and operation logs
- Generate timed passcodes
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NICE DIGI smart locks control system 1. Control your locks: unlock or lock your door with this APP 2. Share access permissions: share permanent or timed access permissions to your familys 3. Set your locks: Initialize and set the various functions of your smart door locks 4. Query records: query unlock records and operation logs of locks in APP 5. Generate timed passcode: generate timed passcode for a temporary visitor or Courier
Crash Engine
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Crash Engine streamlines collision documentation with structured reporting, photo capture, and integrated information exchange tools in one efficient mobile workflow. The app helps authorized users generate professional boilerplate collision documentation aligned with commonly used CIM reporting standards for property-damage-only traffic collisions. Users can capture scene details, organize involved party and vehicle information, attach photos directly within the app, and accelerate documentation through a clean, field-focused interface designed for speed, consistency, and clarity. Crash Engine functions solely as a documentation and report-writing utility. The app does not allow users to report crimes, submit incidents to law enforcement agencies, contact emergency services, or communicate with police dispatch systems. Crash Engine is not affiliated with, connected to, or operated by any public safety answering point (PSAP), emergency response center, or law enforcement reporting network. All information entered into Crash Engine is stored locally on the user’s device. The app does not use cloud storage, external AI processing, third-party analytics for report content, or automated data sharing. Users and agencies retain full responsibility and control over all generated documentation and exported materials. Crash Engine is intended to assist trained users with crash documentation workflows and does not replace agency policies, legal reporting requirements, official records systems, or supervisory review processes.
Screenshots
Verdict
The clearest difference is price: NICE DIGI at Free against Crash Engine's $6.99. NICE DIGI also leads on iOS requirement (13.0 vs 26.4). On ads, 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
NICE DIGI is free to download; Crash Engine costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | NICE DIGI | Crash Engine |
|---|---|---|
| Price | Free — better | $6.99 |
| Rating | 2.4 (57 ratings) — better | — |
| Positive reviews | 22.2% of reviews | — |
| Number of ratings | 57 — better | — |
| Update frequency | Every 6 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 26.4 |
| Further details — not scored | ||
| Size | 194 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | 少辉 吴 | Code 3 Coders LLC |
In-app purchases
NICE DIGI
No in-app purchases
Crash Engine
No in-app purchases









