Kaliper vs Locksmith FieldPro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kaliper
Measure key cuts accurately using your device's camera. This utility helps decode keys when a physical caliper is unavailable or difficult to read. Offers predefined systems and custom measurement options for various lock types.
- Measure key cuts with device camera
- Predefined lock systems
- Custom key measurement input
- Ad-free upgrade option
- Supports various lock brands
Read full descriptionHide full description
Out-of-the-shop and out-of-the-van key gauge utility. Have a key you need to decode but no caliper or key gauge nearby? Not 100% confident on your eyesight to read the cuts? Then use your iDevice to measure the key with Kaliper. Kaliper is free to download with a purchase option for upgrading. It is recommended to get accustomed to the app prior to purchasing as with any tool, this app has a learning curve and with practice comes perfection. The free version comes with two predefined systems: Arrow .014" and Schlage .015" (5 pin only). The full version comes with eight predefined systems: Arrow .014" (5/6 pin), Best A2, A3, A4 (6/7 pin), Kwikset .023" (standard/titan), Sargent .020" (5/6 pin), Schlage .015" (5/6 pin), and Yale .019" (5/6 pin). In addition to custom key measurements and of course no ads. Instructions: On the main page begin by selecting your iDevice from the choices on the left, then select either a predefined system or custom. Do not use full screen on iPads. Predefined: Lay your device on a flat surface and place your key on top of the silhouette, using the top shoulder (or bottom tip for best systems) as the primary focus for alignment. If aligned properly each of the cut markers will sit directly above each corresponding cut. If necessary, use the zoom control at the bottom for a better fit. Once the key is aligned, tap on the first down arrow in the upper right hand corner to lower the cut marker. Each tap represents a deeper cut with the depth displayed directly above the arrow. Keep tapping until the marker outlines the cut. If the marker starts to disappear behind the key use the up arrow to raise the marker. Do this for the remaining cuts to finish measuring your key. Custom: The measuring process remains the same as the predefined systems, but as the markers are customizable some measurements need to be supplied before proceeding: Bow to First Cut: The distance from the center of the first cut to the top shoulder. Cut to Cut: The distance between the center of each cut. Shallowest Depth: The distance from the bottom of the blade to the center of the lowest cut in the system (i.e. Zero or One). Depth Increment: The distance between subsequent cuts. These measurements are typically found on pinning kits, however the system you are inputting may be found on the Charts page. From this chart simply tap on the system and all the measurements will be automatically applied. If inputting manually, type the measurements into the 4 boxes and tap Apply. The markers will adjust accordingly and you can begin measuring the key using the shoulder and blade for alignment. If the system uses a One as the shallowest cut, tap on 0 - 9 to reflect a 1 thru 10 cut system. Tap again to switch back. Compatibility (sorted by screen size): iPhone SE2, SE3, 12 mini, 13 mini, 11 Pro, 11, 12, 12 Pro, 13, 13 Pro, 14, 14 Pro, 15, 15 Pro, 16, 16e, 17e, 16 Pro, 17, 17 Pro, Air, 11 Pro Max, 12 Pro Max, 13 Pro Max, 14 Plus, 14 Pro Max, 15 Plus, 15 Pro Max, 16 Plus, 16 Pro Max, 17 Pro Max Found a bug? Something not working? Have a suggestion? Feel free to contact me via email: farren@phoxlocks.com
Locksmith FieldPro
Read full descriptionHide full description
FieldPro is a professional knowledge platform built for automotive locksmiths who need accurate information fast in the field. Stop guessing. Stop searching forums. Get real-world data from technicians who actually perform the work. FieldPro combines vehicle identification tools with crowdsourced field intelligence so you can quickly find the most reliable way to complete the job. Vehicle Identification • VIN decode using NHTSA data • Quick Make, Year, Model selection • Vehicle image confirmation • Save and organize frequently serviced vehicles Key & Remote Intelligence • Smart key, transponder, and mechanical key types • Chip type information • FCC ID lookup and remote details • Stand-alone remote vs integrated smart key identification Tool Compatibility • See which tools work best for each vehicle • Add Key vs All Keys Lost support • OBD, EEPROM, and on-board programming methods • Community success rates and real technician feedback Field-Tested Procedures • Step-by-step instructions • Required tools and conditions • Common failure points and warnings • Time estimates and difficulty indicators Crowdsourced Field Data (What makes FieldPro different) • Real results from working locksmiths • Success / partial / failed reporting • Confidence scoring based on field use • Continuously improving knowledge base Built for Professionals • Fast, simple workflow designed for mobile use • Save notes, photos, and job details • Favorite vehicles for quick access • Designed by locksmiths for locksmiths Whether you're programming keys, diagnosing a remote issue, or handling an All Keys Lost situation, FieldPro gives you the information you need to finish the job with confidence.
Screenshots
Verdict
The clearest difference is in-app purchases: Locksmith FieldPro at none against Kaliper's 1. Locksmith FieldPro also leads on ads (none vs shown). On price, device support and iOS requirement 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. Kaliper sells 1 one-off in-app purchase. Locksmith FieldPro asks for nothing beyond the download.
| Parameter | Kaliper | Locksmith FieldPro |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (8 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 8 months | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 4 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | Farren Domenici | Kyle Barnard |
In-app purchases
Kaliper
- Kaliper Full Version$1.99
Locksmith FieldPro
No in-app purchases
Questions
Is Kaliper free?
Is Locksmith FieldPro free?
Do Kaliper or Locksmith FieldPro have ads?
Other comparisons















