Serenity Smart vs Calibrated Risk
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Serenity Smart
This secure group messaging app connects caregivers for older adults on one platform. It facilitates communication and collaboration to enhance the quality of care and life for seniors.
- Secure group messaging
- Caregiver collaboration
- Improved care quality
- Enhanced quality of life
- Single communication platform
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Serenity Smart is a secure group messaging application that brings everyone providing care to an older adult together on a single platform to communicate and collaborate, thereby improving quality of care and quality of life.
Calibrated Risk
This app replaces guesswork in Job Hazard Analyses with data-driven risk scores. It identifies hazards, maps them to specific standards, and scores risk using real citation rates and injury outcomes for your industry. Get hierarchy-of-controls recommendations and residual risk scoring.
- Hazard identification from task description
- Map hazards to CFR standards
- Citation rates per CFR and NAICS code
- Fatality and hospitalization rates
- Risk level scoring
- Hierarchy-of-controls recommendations
- Residual risk scoring
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Calibrated Risk replaces guesswork in Job Hazard Analyses with risk scores grounded in real OSHA enforcement data. Describe a task in plain language. Calibrated Risk identifies the hazards, maps each one to the specific CFR standard that governs it, and scores the risk using actual citation rates and injury outcomes for your industry — not estimates, not ranges, not someone's recollection. DISCLAIMER: Calibrated Risk is an independent, privately developed tool. It is not affiliated with, endorsed by, or authorized by OSHA, the U.S. Department of Labor, the U.S. Census Bureau, or any government agency, and it does not represent any government entity or provide official government services. It analyzes publicly available government data; official sources are listed below. WHAT YOU GET • Hazard identification from a plain-language task description • Every hazard mapped to a specific 29 CFR 1910 or 1926 standard • Citation rates calculated per CFR standard, per NAICS code • Fatality and hospitalization rates from investigated OSHA injury records • Risk levels from Critical to Negligible, with Aggregate Priority Numbers • Hierarchy-of-controls recommendations tied to enforcement data • Residual risk scoring after controls are applied BUILT ON REAL DATA 13.2 million OSHA violation records. 5.1 million inspections. 231,000 investigated injury outcomes. Every score traces back to enforcement history for your specific standard and industry — so when someone asks why a hazard is rated Critical, you have an answer. GOVERNMENT DATA SOURCES All government data is sourced from official U.S. government records: • OSHA inspection & violation records — OSHA Establishment Search: https://www.osha.gov/ords/imis/establishment.html • OSHA enforcement data (bulk downloads) — U.S. Dept. of Labor: https://enforcedata.dol.gov • Severe injury & hospitalization reports — OSHA Severe Injury Reports: https://www.osha.gov/severe-injury-reports • 29 CFR 1910 & 1926 standards — OSHA Law & Regulations: https://www.osha.gov/laws-regs/regulations/standardnumber • Official regulation text — eCFR Title 29: https://www.ecfr.gov/current/title-29 • NAICS industry codes — U.S. Census Bureau: https://www.census.gov/naics FOR SAFETY PROFESSIONALS • Save JHAs to your library and reopen them anytime • Export a complete PDF report with controls, residual risk, and citations • Offline access to your saved JHAs in the field FREE TO TRY Run your first JHA free. No credit card required. Subscriptions are billed through Apple. Pro is $49.99/month. Subscriptions renew automatically until cancelled in Settings > Apple Account > Subscriptions. PRO SUBSCRIPTION Calibrated Risk is free to use, including one job hazard analysis per month. Calibrated Risk Pro is an optional auto-renewable subscription for a single user. What Calibrated Risk Pro includes: • Unlimited job hazard analyses (the free plan includes one per month) • Save analyses to your account and reopen them on any device, including offline • Export a complete PDF report with the controls hierarchy, residual risk levels, and CFR citations • Collect signature sign-offs on a saved JHA Subscription: Calibrated Risk Pro Length: 1 month, auto-renewing Price: US$49.99 per month Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically for the same period at the same price unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the end of the current period. Manage or cancel your subscription in Settings > [your name] > Subscriptions. Deleting the app or your Calibrated Risk account does not cancel the subscription. Terms of Use (EULA): https://calibratedrisk.io/terms Privacy Policy: https://calibratedrisk.io/privacy
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Verdict
The clearest difference is rating: Calibrated Risk at 5.0 against Serenity Smart's 4.2. Serenity Smart's advantage is in-app purchases (none vs 1) and ratings volume (9 vs 1). On price, update cadence, ads 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
Both are free to download. Calibrated Risk sells 1 in-app purchase, starting at $49.99 per month. Serenity Smart asks for nothing beyond the download.
Calibrated Risk holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Serenity Smart has 9 ratings behind it against 1, so its average is the more settled of the two.
Serenity Smart ships an update fortnightly, Calibrated Risk every 8 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Serenity Smart | Calibrated Risk |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (9 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 9 — better | 1 |
| Update frequency | Fortnightly | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 74 MB | 2 MB |
| Age rating | 12+ | 4+ |
| Developer | Serenity App, Inc. | Mile High Compliance LLC |
Customer experience
Serenity Smart
Calibrated Risk
In-app purchases
Serenity Smart
No in-app purchases
Calibrated Risk
- Calibrated Risk Pro$49.991 Month








