Sterile Processing vs Surgical Instrument Learning
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sterile Processing
Prepare for the CRCST exam with practice questions, instrument identification drills, and study guides. Plan your study routine, track progress, and review core sterile processing topics. Offers a free experience with optional monthly, annual, or lifetime subscriptions for full access.
- 320 practice questions
- Instrument identification drill
- Daily study tasks
- Five study guides
- 24 flashcards
- Progress tracking
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Build a focused study routine for the CRCST exam with Sterile Prep. PRACTICE AND UNDERSTAND Work through 320 practice questions covering sterile processing topics. Review answer explanations, bookmark questions and return to your saved practice session. LEARN YOUR INSTRUMENTS Use the interactive instrument-identification drill to review surgical instruments and their uses. PLAN YOUR STUDY Set an exam date, follow daily study tasks and review progress across the app's study areas. These indicators reflect your in-app activity, not a predicted exam score. REVIEW THE FUNDAMENTALS Explore five study guides and 24 flashcards covering core sterile processing topics. Use the wrapping guide, tray assembly checklists and sterilization reference as educational aids. CHOOSE YOUR ACCESS Try the free experience before purchasing Pro. Monthly and annual subscriptions and a lifetime purchase are offered in the app. Apple displays your local price and any eligible introductory offer before you confirm. Subscriptions renew automatically unless canceled through your Apple Account. Restore eligible purchases from Settings. This release focuses on CRCST study. It does not provide separate CIS, CER, CSIS or CSPDT question banks. Study questions, instrument names and reference material are in English; selected app controls also support Spanish. EDUCATION ONLY This app is an independent study aid, not clinical guidance, a sterilizer controller or a validated quality-management system. Always follow the device manufacturer's current instructions for use and your facility's policies. It is not affiliated with or endorsed by HSPA, CBSPD, AAMI or any healthcare facility. CRCST is a trademark of HSPA. No exam result is guaranteed. Support: https://www.voltexam.com/support Privacy: https://www.voltexam.com/privacy Terms: https://www.voltexam.com/terms
Surgical Instrument Learning
Master surgical instruments with flashcards and exams based on real photographs. Practice identifying instruments for specific surgeries and trays, track your progress, and even add custom instruments. Pro members get access to interactive 3D models.
- 3,300+ instruments with photos
- Flashcards, practice tests, timed exams
- 3D instrument models (Pro)
- Tray and surgery practice
- Progress tracking
- Custom instrument addition
- Instrument of the Day
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Learn every surgical instrument by sight, then prove it under exam conditions. Built for surgical technologists, scrub techs and students who have to name an instrument the moment it's asked for. Every question comes from a real photograph, so you study the way you're tested in the field. WHAT'S INSIDE: 3,300+ instruments with photographs, uses and the details that matter at the back table. Flashcards, practice tests and timed exams by class or specialty. Pro members can turn, zoom and open real 3D models, and every instrument page now shows sizes, care and reprocessing, and the trays or sets it belongs to. Look-alike drills for the pairs that actually cost people points. An Instrument of the Day to keep your eye sharp. Read aloud on any name. EVERY TRAY AND SURGERY: Practice all 31 standard trays and build each one from memory by spotting which instruments are missing. The instruments for 280+ surgeries are here too, ready to practice. KNOW WHERE YOU STAND: Progress tracks every instrument you've met, solid, still learning, or never seen. BUILD YOUR OWN: Add your own instruments and setup lists for what your facility actually runs. ONE SUBSCRIPTION: CSTSetup Pro works here, in CSTSetup, and on cstsetup.com.
Screenshots
Verdict
The clearest difference is update cadence: Surgical Instrument Learning at every 4 days against Sterile Processing's every 4 months. Surgical Instrument Learning also leads on rating (5.0 vs 4.8). On price, ratings volume, ads 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. Sterile Processing sells 3 in-app purchases, starting at $9.99 per month and Surgical Instrument Learning sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.
Surgical Instrument Learning holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively.
Sterile Processing ships an update every 4 months, Surgical Instrument Learning every 4 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.
| Parameter | Sterile Processing | Surgical Instrument Learning |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 4 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 8 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Deeun Inc. | CSTSetup |
Customer experience
Sterile Processing
Surgical Instrument Learning
In-app purchases
Sterile Processing
- Pro - Monthly3 Days trial$9.991 Month
- Prep Pro Annual$29.991 Year
- Pro - Lifetime Access$59.99
Surgical Instrument Learning
- CSTSetup Monthly Pro$12.991 Month
- CSTSetup Yearly Pro$155.991 Year
Questions
Is Sterile Processing free?
Is Surgical Instrument Learning free?
Which has better reviews, Sterile Processing or Surgical Instrument Learning?
Do Sterile Processing or Surgical Instrument Learning have ads?
Which is updated more often, Sterile Processing or Surgical Instrument Learning?
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