Drillstring Toolbox vs KY UFO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Drillstring Toolbox
This utility app calculates drill-stem load capacities based on API connections and sizes. It also provides makeup torque and tensile capacity, as well as tensile and torsion capacities for drill pipe tubes.
- Drill-stem load capacity calculation
- API connection selection
- Makeup torque calculation
- Tensile capacity calculation
- Drill pipe tube capacities
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Drillstring Toolbox is a free calculator from Standard DS-1 that gives you the drill-stem load capacities you need! You can choose an API connection (along with the size you're interested in) to find its recommended makeup torque and tensile capacity. Tap the "Tube" tab to find the tensile and torsion capacities for drill pipe tubes as well!
KY UFO
Control toy unmanned aerial vehicles and view captured images. Offers a variety of innovative gameplay modes for enhanced user experience.
- Toy UAV control
- Picture display
- Multiple gameplay modes
- Innovative play options
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This software provides toy UAV control and picture display functions, and innovatively provides a variety of ways to play.
Screenshots
Verdict
The clearest difference is review sentiment: Drillstring Toolbox at 100% against KY UFO's 25%. Drillstring Toolbox also leads on rating (3.3 vs 2.5). KY UFO's advantage is update cadence (monthly vs every 39 months) and ratings volume (205 vs 3). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
Drillstring Toolbox holds the better App Store score, 3.3 against 2.5. That said, the two scores are not equally well evidenced: KY UFO has 205 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of Drillstring Toolbox's written reviews are positive against 25% of KY UFO's.
Drillstring Toolbox ships an update every 39 months, KY UFO monthly. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.
| Parameter | Drillstring Toolbox | KY UFO |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (3 ratings) — better | 2.5 (205 ratings) |
| Positive reviews | 100.0% of reviews — better | 25.0% of reviews |
| Number of ratings | 3 | 205 — better |
| Update frequency | Every 39 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 133 MB |
| Age rating | 4+ | 4+ |
| Developer | Bureau Veritas North America, Inc. | shenzhen cooingdv technology co.,ltd. |
Customer experience
Drillstring Toolbox
KY UFO
Bugs and requests
Drillstring Toolbox
Not enough reviews yet to summarise bugs or requests.
KY UFO
Reported bugs
3 issues- App doesn't connect to phone
- Drone flies away uncontrollably
- Buttons and controls don't work
Requested features
3 requests- Update app for latest iOS versions
- Improve camera quality
- Add more control options
In-app purchases
Drillstring Toolbox
No in-app purchases
KY UFO
No in-app purchases
Questions
Is Drillstring Toolbox free?
Is KY UFO free?
Which has better reviews, Drillstring Toolbox or KY UFO?
Do Drillstring Toolbox or KY UFO have ads?
Which is updated more often, Drillstring Toolbox or KY UFO?
Other comparisons
