Comparison

Trailer Sentry vs Lockii

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Trailer Sentry

Features
Read full description

The Trailer Sentry is an anti-theft device that is capable of locking trailer and tractor brakes preventing assets from being moved or stolen. The optional Cargo Guard hardware also enables the locking and unlocking of cargo doors via the app. Dispatch may grant or remove access via web-based software to specific drivers to control specific assets using the app from any Bluetooth-enabled iOS phone or tablet.

About

Lockii

Features
Read full description

Lockii - Run a fully automated rental business. Lockii is the all-in-one platform for contactless rentals. Manage bookings, automate pickups & returns, track items with GPS, and automate customer communication - all from one system. With Lockii, rental businesses can operate 24/7 self-service hire locations without needing staff onsite, or staff intervention with bookings. From trailers and vehicles to bikes, equipment, and outdoor gear, Lockii powers modern rental companies around the world. Automate Your Entire Rental Workflow Lockii handles the entire rental lifecycle: • Customers book online • Identity verification confirms the renter • Access codes are generated and sent to unlock the item • Automated messaging guides the hire • Returns are confirmed with photos and GPS Over 95% of bookings run without human involvement at all, allowing businesses to scale faster and reduce labour costs. Who Lockii Is For Lockii is designed for rental businesses of all types: • Trailer hire • Car rentals • Bike and scooter rentals • Equipment hire • Outdoor gear rentals • Self-service vending rentals Why Businesses Choose Lockii • Operate rental locations without staff • Reduce operational costs • Expand to new locations faster • Increase asset utilisation • Deliver a modern self-service experience Lockii integrates bookings, payments, access control, and tracking into a single platform designed specifically for contactless rental businesses.

Screenshots

Trailer Sentry3 screens
Lockii4 screens

Verdict

The call

The clearest difference is update cadence: Lockii at every 3 weeks against Trailer Sentry's every 5 months. Trailer Sentry's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Trailer Sentry ships an update every 5 months, Lockii every 3 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Trailer Sentry versus Lockii: the parameters behind the verdict, then further details
ParameterTrailer SentryLockii
PriceFreeFree
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better17.0
Further details — not scored
Size2 MB75 MB
Age rating4+4+
Developer7PSolutions, LLCBodhi Hawken

In-app purchases

None

Trailer Sentry

No in-app purchases

None

Lockii

No in-app purchases

Questions

Is Trailer Sentry free?
Trailer Sentry is free to download, with no in-app purchases.
Is Lockii free?
Lockii is free to download, with no in-app purchases.
Do Trailer Sentry or Lockii have ads?
Neither Trailer Sentry nor Lockii shows ads.
Which is updated more often, Trailer Sentry or Lockii?
Trailer Sentry ships an update every 5 months, and Lockii every 3 weeks. Most recently, Trailer Sentry was updated on October 26, 2026 and Lockii on October 24, 2026.

Other comparisons