SENTRY AI Helicopter vs Dr. CheckOff
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
SENTRY AI Helicopter
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The SENTRY AI remote control Helicopter brings flying pleasure to you
Dr. CheckOff
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Work as a Set Dresser? Or in Wardrobe? Have you ever looked at a pile of paperwork and thought "Maybe coal mining IS for me"? Simply Input pdf files from the major rental prop and costume houses, (they can email these when you pick up) and use your camera to check off the items. You can also add a note about an item, or manually toggle the check status. Note-The pdfs have to be very square. Scans of physical paperwork will work, if they are square. The originals as emailed by production will always work perfect, scans may miss an item or two. I work as a set dresser, and I made sure this thing works for US at every level. If your phone dies, or it crashes mid check? The Dr writes each check each time, so you pick up where you left off. You doing a wrap off grid? The Dr is all offline, just make sure you get the paperwork imported and the Dr will Check it off. That what he does.
Screenshots
Verdict
The clearest difference is update cadence: Dr. CheckOff at every 2 weeks against SENTRY AI Helicopter's every 2 months. SENTRY AI Helicopter's advantage is iOS requirement (11.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SENTRY AI Helicopter ships an update every 2 months, Dr. CheckOff every 2 weeks. The most recent releases landed on September 27, 2026 and October 8, 2026 respectively.
| Parameter | SENTRY AI Helicopter | Dr. CheckOff |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 weeks โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 11.0 โ better | 16.6 |
| Further details โ not scored | ||
| Size | 144 MB | 97 MB |
| Age rating | 4+ | 4+ |
| Developer | Le Wei Technology(HK) Limited | Trevor Rogers |
In-app purchases
SENTRY AI Helicopter
No in-app purchases
Dr. CheckOff
No in-app purchases
Questions
Is SENTRY AI Helicopter free?
Is Dr. CheckOff free?
Do SENTRY AI Helicopter or Dr. CheckOff have ads?
Which is updated more often, SENTRY AI Helicopter or Dr. CheckOff?
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