RFF Index vs SIMPL
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RFF Index
This app helps healthcare professionals quickly assess the baseline frailty of older adults admitted with traumatic rib fractures. It provides a risk score and estimates potential outcomes based on frailty levels. The tool is intended to supplement clinical judgment, not replace it.
- Frailty assessment for older adults
- Rib fracture patient characterization
- RFF score calculation
- Risk of frailty identification
- Population-level outcome estimates
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The Rib Fracture Frailty Index was developed to rapidly characterize baseline frailty of older adults (age ≥65 years) admitted with traumatic rib fractures. Users will be provided with a RFF score, risk of frailty (low, medium, high), and population-level estimates of rib fracture-specific outcomes based on baseline frailty. Disclaimer: Predicted risk should supplement, not replace, management decisions, which should be provider and hospital-specific. Please seek a doctor's advice before making any medical decisions.
SIMPL
This app facilitates workplace-based assessments for medical professionals, enabling the evaluation of entrustable professional activities within medical education settings.
- Workplace-based assessments
- Entrustable professional activities
- Medical education implementation
- Professional development tracking
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SIMPL: Society for Improving Medical Professional Learning makes it feasible to implement workplace-based assessments, including assessment of entrustable professional activities, across medical education.
Screenshots
Verdict
The clearest difference is rating: RFF Index at 5.0 against SIMPL's 4.1. SIMPL's advantage is update cadence (every 2 weeks vs every 3 months) and ratings volume (16 vs 2). 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.
RFF Index holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: SIMPL has 16 ratings behind it against 2, so its average is the more settled of the two.
RFF Index ships an update every 3 months, SIMPL every 2 weeks. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.
| Parameter | RFF Index | SIMPL |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.1 (16 ratings) |
| Positive reviews | — | 40.0% of reviews |
| Number of ratings | 2 | 16 — better |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 37 MB |
| Age rating | 12+ | 4+ |
| Developer | Edward Vendrow | Procedural Learning and Safety Collaborative, Inc |
Customer experience
RFF Index
SIMPL
In-app purchases
RFF Index
No in-app purchases
SIMPL
No in-app purchases
