SIMPL OR vs Behind the Knife
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SIMPL OR
This app helps medical professionals evaluate residents after procedures. It collects feedback and aggregates data for faculty to track resident experience and tailor supervision. The system is designed for efficiency and provides meaningful evaluation insights.
- Procedure evaluation for residents
- Formative feedback dictation
- Aggregated resident experience data
- Faculty access to evaluation data
- Individualized teaching and supervision insights
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SIMPL: System for Improving and Measuring Procedural Learning makes it feasible to evaluate residents after every procedure they perform. The SIMPL app, used by residents and faculty, is designed from the ground up for efficiency and ease of use while still providing meaningful evaluation data. Each evaluation consists of 3 questions plus the option to dictate formative feedback. Aggregated evaluation data is accessible to faculty who can use it to see how much experience a resident has with any given procedure or with a group of procedures. This knowledge can, in turn, serve to inform a conversation with the resident prior to each operation so as to better individualize both teaching and supervision in the operating room.
Behind the Knife
This platform offers surgical education with high-yield topics and interviews with field leaders. It provides timely, relevant, and engaging content to help users succeed in their medical studies and careers.
- Surgical education platform
- High-yield educational topics
- Interviews with field leaders
- Timely and relevant content
- Engaging learning experience
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Behind the Knife is the world’s #1 surgical education platform. From high-yield educational topics to interviews with leaders in the field, Behind the Knife delivers the information you need to know. Enjoy timely, relevant, and engaging content designed to help you DOMINATE THE DAY!
Screenshots
Verdict
The clearest difference is rating: Behind the Knife at 4.0 against SIMPL OR's 3.5. Behind the Knife also leads on ads (none vs shown) and monetization model (free vs ad-supported). SIMPL OR's advantage is iOS requirement (10.0 vs 15.0). On price, ratings volume, update cadence and in-app purchases 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.
Behind the Knife holds the better App Store score, 4.0 against 3.5. Both are backed by a comparable volume of ratings — 12 and 19 respectively. Written reviews point the same way: 50% of SIMPL OR's written reviews are positive against 58% of Behind the Knife's.
SIMPL OR ships an update every 2 months, Behind the Knife every 5 weeks. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.
| Parameter | SIMPL OR | Behind the Knife |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (12 ratings) | 4.0 (19 ratings) — better |
| Positive reviews | 50.0% of reviews | 58.3% of reviews — better |
| Number of ratings | 12 | 19 — better |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 21 MB | 168 MB |
| Age rating | 12+ | 17+ |
| Developer | Procedural Learning and Safety Collaborative, Inc | Behind the Knife |
Customer experience
SIMPL OR
Behind the Knife
In-app purchases
SIMPL OR
No in-app purchases
Behind the Knife
No in-app purchases
