Kaliper vs Identikey.ai
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
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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
Identikey.ai
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Identikey is your self-sovereign digital identity. Your identity, fully under your control. Securely store your personal data on your device, decide who can access it, and revoke access at any time — all from one place. What you can do with Identikey • Create a wallet that holds your verified identity on your device — private keys never leave your phone. • Share specific pieces of your profile (name, email, age, nationality, address…) with businesses you trust, using end-to-end encryption. • Approve or deny each data request from the businesses you interact with. • Revoke any active access from the businesses you previously approved. • Manage your bookings and check-ins by simply scanning a QR code. • Track the history of every data-sharing event from one inbox. How it works Your data is stored locally and encrypted with your private key. When a business asks for information, Identikey signs and encrypts only the fields you approve, using industry-standard cryptography (ECDSA on secp256k1 + ECDH + Salsa20). The recipient can verify the data is genuinely yours — without needing to host or store it on their own servers. Privacy by design • No central server holds your personal data. • Your decentralised identifier (DID) is published on the Polygon blockchain — but your personal information is not. • GDPR-compliant: every access you grant is logged, revocable, and auditable. • No advertising, no profiling, no third-party trackers. Who is Identikey for? • Travellers checking into hotels or short-stay properties. • Visitors at events, venues, and experiences that require verified guest information. • Anyone tired of filling in the same registration form on every website. Built by Dengun. Learn more at https://identikey.ai.
Screenshots
Verdict
The clearest difference is in-app purchases: Identikey.ai at none against Kaliper's 1. Identikey.ai also leads on ads (none vs shown). Kaliper's advantage is iOS requirement (14.0 vs 16.6). On price 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
Both are free to download. Kaliper sells 1 one-off in-app purchase. Identikey.ai asks for nothing beyond the download.
| Parameter | Kaliper | Identikey.ai |
|---|---|---|
| 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, iPad |
| Requires iOS | 14.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 4 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Farren Domenici | Dengun |
In-app purchases
Kaliper
- Kaliper Full Version$1.99
Identikey.ai
No in-app purchases









