nControl vs Under The Hood
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
nControl
This application enables users to connect to and send commands to specific display devices via Bluetooth. It facilitates remote control of SB600 display units from Cardinal Scales.
- Bluetooth connectivity
- Send commands to SB600 display
- Control Cardinal Scales devices
- Remote device management
Read full descriptionHide full description
Cardinal Scale's nControl app configures the model 195 and 225 weight indicators and the SB600 remote display from your iPhone or iPad, no cables, no laptop, no extra software. nControl connects directly over Bluetooth and presents every setting in the same menu structure shown on the device's own front panel, so a technician who knows the indicator already knows the app. Connections to a 195/225 are protected by the six-digit nControl password set at the indicator, and a built-in search finds any setting by name or value across the entire menu. Settings templates capture a configured unit every setting into a single file that can be applied to as many units as needed, so a row of identical scales is set up once and copied to the rest. Templates can also be built with no unit present by choosing the scale card and the cards fitted in both option slots. Before writing anything, nControl checks the template against the unit in front of it and warns when the scale card, option cards, or firmware menu version don't match. Every value written is read back from the device to confirm it, and anything the indicator refused or adjusted is reported. Templates are shared by Mail, AirDrop, or Files and open directly in nControl on another iPhone or iPad. The built-in ticket designer creates custom print layouts and sends them over Bluetooth to any of the indicator's three ticket slots, using the same file format as Cardinal's desktop nControl software. Command sets for Epson, Star, and Eltron/EPL printers are included. For the SB600 remote display, nControl edits the message slots: text, color, speed, and effects and configures display, communication, and serial settings, with the same template capture and upload used by the indicators. Recently used units stay one tap from the home screen and can be pinned in whatever order suits the job.
Under The Hood
This app uses AI to instantly translate complex vehicle service documents into plain English. It breaks down each line item, identifies urgent repairs, and compares labor rates to your local area. It also helps diagnose warning lights and provides negotiation guidance.
- AI-powered service document translation
- Plain-English explanation of repairs
- Urgency classification for repairs
- Labor rate comparison by region
- Warning light and OBD-II code diagnosis
- Negotiation guidance
Read full descriptionHide full description
Under The Hood uses advanced AI to read your car's problems in seconds: on paper, on the dashboard, or on the part itself. Point your camera at a service invoice, dealer estimate, or handwritten work order and get an instant plain-English breakdown of every line item: what the work involves, whether it needs to happen now, and how the labor rate compares to your area. No automotive knowledge required. Built to use in under 60 seconds. SCAN A SERVICE DOCUMENT Plain-English explanation of every line item. Urgency classification and "can wait" flag per item so you know what actually needs attention now. Labor rate benchmark by region so you understand where each line stands. Real parts pricing pulled from live marketplace listings. Confidence score per line item reflecting image clarity, repair commonality, and data availability. Negotiation guidance with specific language to use at the counter. Overall assessment of the full invoice. Share a clean one-page PDF summary with a spouse, a friend, or a second shop. SCAN YOUR DASHBOARD Photograph your instrument cluster and find out what that light actually means: the likely causes, cheapest first, whether it's safe to keep driving, and the single next step to take. A flashing check engine light and a steady one mean very different things, and the app tells you which you're looking at. CHECK YOUR TIRES Photograph the tread and get an estimated tread depth plus what the wear pattern is telling you: center wear from overinflation, edge wear from underinflation, one-sided wear from alignment. Know where you stand before someone tells you that you need four new tires. CHECK A WORN PART Photograph a belt, hose, brake pad, or battery terminal and find out whether it genuinely needs replacing now or has life left in it. DIAGNOSE MODE Not sure what that noise or warning means? Enter an OBD-II code or describe what you're noticing. Under The Hood explains the likely cause, urgency level, estimated service range, and whether it's safe to keep driving before you ever walk into a shop. BUILT FOR REAL SITUATIONS Works on typed invoices, handwritten estimates, dealer service orders, and multi-page documents. Handles blurry or partial images. Warns you before a large upload on cellular data. No account required. Your data is never sold. Terms of Use (EULA): https://drewspagna1.github.io/Under_The_Hood_Support/terms.html
Screenshots
Verdict
The clearest difference is in-app purchases: nControl at none against Under The Hood's 2. nControl also leads on ratings volume (3 vs 1). On price, rating, update cadence and ads 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
Both are free to download. Under The Hood sells 2 in-app purchases, starting at $19.99 per year. nControl asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for nControl against 5.0 for Under The Hood. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
nControl ships an update weekly, Under The Hood every 5 days. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.
| Parameter | nControl | Under The Hood |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (1 ratings) |
| Number of ratings | 3 — better | 1 |
| Update frequency | Weekly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 24 MB | 32 MB |
| Age rating | 17+ | 4+ |
| Developer | Cardinal Scale manufacturing company | Robin Spagna |
Customer experience
nControl
Under The Hood
In-app purchases
nControl
No in-app purchases
Under The Hood
- Annual Unlimited$19.991 Year
- Single Scan$2.99
Questions
Is nControl free?
Is Under The Hood free?
Which has better reviews, nControl or Under The Hood?
Do nControl or Under The Hood have ads?
Which is updated more often, nControl or Under The Hood?
Other comparisons















