Comparison

SAI Chart vs Previa

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SAI Chart

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SAI Chart is an AI-powered medical assistant that uses advanced intelligence to create accurate, high-quality clinical notes and reduce clinician documentation burnout. SAI transforms natural patient conversations into structured, reliable, and EHR ready clinical documentation, allowing clinicians to stay fully present with their patients instead of their keyboards. Record your visit once, speak naturally, and let SAI generate complete clinical notes in real time eliminating hours of after-hours charting. SAI Chart Key Features: 1. AI-Powered Real-Time Transcription & Documentation: Scribe Runner AI listens to patient encounters and instantly converts spoken language into accurate written text using ASR technology into structured, compliant medical notes. 2. Multi-Language Support: Supports language & transcription in multiple languages, catering to diverse user bases and enabling global applicability. 3. Telehealth Visit Recording: Seamlessly start a telehealth session with screen-sharing and automatic recording. 4. Customizable & Specialty-Specific Templates: Tailor templates to your specialty to match your clinical workflow and documentation needs. 5. Advanced Dictation: Dictate directly into notes. The system recognizes your voice, placing or replacing text intelligently. 6. Code & Suggestion Generation: Automatically suggests ICD-10 and CPT codes. Also assist the user to add code manually from the code directory. 7. SAI Co-Pilot: Summarize notes, answer clinical questions, suggest diagnoses, generate patient education content, and more all based on note context. 8. Secure & Compliant: Built with robust security SOC2 & HIPAA-compliant protocols to protect patient data. 9. EHR Integration: Sync notes directly to your EHR with one tap. SAI integrates with popular EHRs like eCW, EPIC, Dr Chrono & Cerner.

About

Previa

Prepare for doctor's appointments by describing your symptoms. This AI-powered tool identifies potential overlooked symptoms and suggests relevant tests to discuss with your physician. It prioritizes your health information for more productive consultations, keeping all data private on your device.

Highlights
  • AI symptom analysis
  • Prioritized test recommendations
  • Session history
  • Report translation
  • Recipient tracking
  • Profile-aware analysis
  • Multi-language support
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Previa helps you get more out of every doctor's appointment. Describe how you're feeling, and Previa's AI identifies related symptoms you may have overlooked and suggests tests worth discussing with your doctor. Already have results? Import a lab or imaging report and Previa explains it in plain language. No diagnoses. No prescriptions. Just better preparation. WHY PREVIA * Most people forget symptoms under pressure, struggle to describe them clearly, or leave appointments wondering if they asked the right questions. Previa gives you a structured, AI-assisted way to organize your health picture before you walk in - so you and your doctor can make the most of your time together. * Reviewed by an experienced MD advisor to keep Previa's information clear, safe, and appropriately scoped. * Lab and imaging reports are written for clinicians, not patients. Import a photo or PDF of your report and Previa explains what it means in plain language, along with the questions worth raising at your appointment. HOW IT WORKS * AI Symptom Analysis: Step 1 - Describe your symptoms. When they started, how severe they are, what makes them better or worse. The more detail you provide, the better the analysis. Previa identifies what you reported and suggests related symptoms you may not have considered. Anything it can't interpret is shown separately. Step 2 - Review AI suggestions and select any additional symptoms that apply. Add your own if something is missing. Step 3 - Receive a prioritized list of 4 to 8 tests to discuss with your doctor, each with a plain-language explanation of why it may be relevant. * Understand your test results - in plain language, with a list of things to discuss with your doctor. KEY FEATURES * AI symptom analysis powered by Anthropic's Claude * Prioritized tests to discuss with your doctor (high, medium, low) * Plain-language explanations of your lab and imaging results, with what to ask your doctor * Full support for 8 languages: English, Spanish, French, German, Italian, Polish, Russian, and Ukrainian * One credit covers a symptom session or a test explanation - your first two credits are free * iCloud sync - your sessions, results, reports, and profile follow you across your devices * Session history to track symptoms and past analyses * Report translation into 46 languages, including Arabic, Japanese, and Georgian * Recipient tracking - record which doctors received your results and when * Profile-aware analysis - age, biological sex, known conditions, and medications PRIVACY FIRST Previa requires no account, no email, and no sign-up. Your data is stored on your devices and syncs only through your own private iCloud - we never receive a copy. Face ID or Touch ID is required on every launch. No advertising. No analytics. No tracking. You can delete all your data at any time from Settings, and deletions reach your other devices. For better symptom analysis tailored to your situation, symptom text is sent along with Profile context you've filled in - age, biological sex, known conditions, and medications - through a secure proxy server, to the AI. Your name is never sent, and any Profile field you leave blank is simply omitted. When you use Test Results, the report you import is sent to be read and explained. You can hide any sensitive information on the report before importing - the explanation doesn't depend on it. Our proxy server keeps nothing after the request is processed. Anthropic deletes requests within 30 days and never uses them to train its models. IMPORTANT Previa is a health preparation tool, not a medical diagnostic tool. It does not provide diagnoses or medical advice, and does not prescribe treatments. Always consult a licensed healthcare provider for medical decisions.

Screenshots

SAI Chart4 screens
Previa4 screens

Verdict

The call

The clearest difference is in-app purchases: SAI Chart at none against Previa's 3. SAI Chart also leads on update cadence (every 10 days vs every 2 months) and iOS requirement (15.6 vs 17.6). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Previa sells 3 one-off in-app purchases. SAI Chart asks for nothing beyond the download.

UpkeepUpdate frequency

SAI Chart ships an update every 10 days, Previa every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
SAI Chart versus Previa: the parameters behind the verdict, then further details
ParameterSAI ChartPrevia
PriceFreeFree
Rating—5.0 (6 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—6 — better
Update frequencyEvery 10 days — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.6
Further details — not scored
Size68 MB9 MB
Age rating17+17+
DeveloperSCRIBERUNNER LLCDmitriy Kourtchikov

In-app purchases

None

SAI Chart

No in-app purchases

3 purchases

Previa

One-time3
  • Previa Basic Pack$0.99
  • Previa Standard Pack$1.99
  • Previa Value Pack$3.49

Questions

Is SAI Chart free?
SAI Chart is free to download, with no in-app purchases.
Is Previa free?
Previa is free to download, with in-app purchases available.
Do SAI Chart or Previa have ads?
Neither SAI Chart nor Previa shows ads.
Which is updated more often, SAI Chart or Previa?
SAI Chart ships an update every 10 days, and Previa every 2 months. Most recently, SAI Chart was updated on October 24, 2026 and Previa on October 25, 2026.

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