OsteoGauge vs E Sentry Systems
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OsteoGauge
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Features: Measuring for: - Anatomical or mechanical axis in frontal or sagittal plane, ex: MPTA, LDFA, LDTA, PPTA, TBVA, JLCA... etc - The percentage of weight bearing line - Length - Tibial slope - Patellar height
E Sentry Systems
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Activate and manage your E Sentry System assets. Users with an NFC compatible device can inspect asset tags to view and submit information, updating its history with the cloud. Activated users can view their assigned routes and designate their current route as needed, showing them which assets require an inspection and cataloging their progress through the route. All check-in information is synched with the cloud service allowing admins to review completed and assigned routes, create new routes, and review inspection history on each asset tag. Historical information is converted into trends and can be exported into an excel compatible document for review and maintenance.
Screenshots
Verdict
The clearest difference is price: E Sentry Systems at Free against OsteoGauge's $2.99. OsteoGauge's advantage is update cadence (daily vs every 3 weeks) and iOS requirement (10.0 vs 16.0). On ads, in-app purchases 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
E Sentry Systems is free to download; OsteoGauge costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
OsteoGauge ships an update daily, E Sentry Systems every 3 weeks. The most recent releases landed on September 14, 2026 and September 9, 2026 respectively.
| Parameter | OsteoGauge | E Sentry Systems |
|---|---|---|
| Price | $2.99 | Free — better |
| Update frequency | Daily — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 112 MB | 54 MB |
| Age rating | +4 | 4+ |
| Developer | Chu An Luo | IRISS Inc, |
In-app purchases
OsteoGauge
No in-app purchases
E Sentry Systems
No in-app purchases
Questions
Is OsteoGauge free?
Is E Sentry Systems free?
Do OsteoGauge or E Sentry Systems have ads?
Which is updated more often, OsteoGauge or E Sentry Systems?
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