ImmoBase vs Key Defender
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ImmoBase
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ImmoBase Your go-to automotive locksmith reference app - built for professionals and continuously updated. With an ImmoBase subscription, you get direct access to our growing vehicle and parts databases without waiting for traditional app updates. New vehicle coverage, parts, programming information and other database improvements can become available as they are added. What makes ImmoBase tick: Vehicle Programming Reference: * Access vehicle-specific information for Add Key, All Keys Lost, Remote Learning, Tips & Tricks, and more where available. Powerful Parts Database: * Search across 1,800+ parts and growing by, part number, FCC, make, model, year, or button combination. Browse smart keys, remote head keys, flip keys, fobs, transponder keys, and more with available fitments, OEM part numbers, and other relevant specifications. Unique C.I.D. Lookup: * Each supported part includes its own C.I.D. identifier, making it easier to cross-reference parts with your inventory and move between vehicle and parts information. VIN Decoder: * Decode a VIN and continue directly into Vehicle Search with the year, make, and model carried over automatically. Connected Vehicle-to-Parts Search: * Move directly from Vehicle Details into Part Search to quickly narrow down compatible parts for the selected vehicle. Recent Lookup History: * Quickly return to previously viewed vehicles, VINs, and parts without starting your search over. Built-in Notes & Feedback: * Save your own notes and submit corrections, suggestions, or additional information directly through the app. Protected Subscriber Access: * Device binding helps protect professional subscriber access, while built-in expiration reminders help you stay aware of upcoming renewals. Hassle-Free Onboarding: * Apply for professional access, upload verification documents, track your application status, choose a subscription plan, and complete activation directly through the app. Whether you're identifying a key, checking programming requirements, cross-referencing a part number, or preparing for an unfamiliar vehicle, ImmoBase puts useful automotive locksmith information in one place. ImmoBase is primarily focused on USA vehicle and parts coverage. Information for other regions may be available where supported. Stay prepared for the next job with ImmoBase.
Key Defender
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A remote‑control signal jammer that blocks various remote‑control data signals
Screenshots
Verdict
ImmoBase and Key Defender are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | ImmoBase | Key Defender |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 53 MB | 88 MB |
| Age rating | 4+ | 4+ |
| Developer | Ronald Persaud | Shenzhen Ecartek Technology, Ltd. |
In-app purchases
ImmoBase
No in-app purchases
Key Defender
No in-app purchases









