NxGen Peak Flow vs RTB2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NxGen Peak Flow
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The NxGen Peak Flow App helps you conduct lung tests seamlessly and conveniently at home. Jurisdiction statement:- This app connects with NxGen Peak Flow Meter(powered by Safey) which are approved by US FDA department for use in USA. Medical Disclaimer - The NxGen Peak Flow Meter device is used for respiratory diagnosis. A layman user should not make any medical decisions based on the output from the Device and the App. Only a licensed healthcare professional can make medical decisions based on the data from the Device and the App.
RTB2
This medical reference app provides respiratory therapists and students with essential clinical tools. It features ventilator mode guides, therapy calculators, and oxygen guidance in a clean, organized format for quick access in critical care settings.
- Ventilator mode reference guides
- Respiratory therapy clinical calculators
- Oxygen device guidance
- Structured respiratory care information
- Fast clinical review format
- Advanced calculators (Pro)
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RTβ₂ (RTB2) is a Respiratory Therapy reference and clinical toolset designed for Respiratory Therapists, respiratory therapy students, and healthcare professionals working in ICU and critical care environments. The app provides ventilator mode references, respiratory therapy calculators, oxygen therapy guidance, and structured respiratory care information in a clean, organized format designed for fast clinical review. The app provides organized access to commonly used Respiratory Therapy references, calculators, and ventilator information in a clean, structured format designed for quick navigation. RTB2 is built to help respiratory professionals review respiratory care concepts, ventilator modes, oxygen therapy guidance, and clinical calculations in one centralized resource. CORE FEATURES • Ventilator mode reference guides • Respiratory therapy clinical calculators • Oxygen device guidance and oxygen therapy reference • Organized respiratory care reference material • Clean layouts designed for fast navigation in clinical environments RTB2 PRO (Subscription) RTB2 Pro unlocks the full RTB2 toolset including advanced calculators, expanded Respiratory Therapy references, and ongoing clinical content updates. Pro features include: • Expanded ventilator mode explanations • Advanced respiratory therapy calculators • Expanded respiratory care reference material • Continuous updates and additional features as the platform evolves Designed for: • Respiratory Therapists • ICU and critical care clinicians • Healthcare professionals working with respiratory care • Students studying Respiratory Therapy RTB2 is intended for educational and informational purposes only. The content provided in this application is not intended to replace institutional protocols, physician orders, professional training, or clinical judgment. SUBSCRIPTION DETAILS RTB2 Pro is available as a monthly auto-renewable subscription. Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current billing period. You can manage or cancel your subscription in your Apple ID account settings at any time. Privacy Policy https://rtb2.com/privacy Terms of Service https://rtb2.com/terms
Screenshots
Verdict
The clearest difference is in-app purchases: NxGen Peak Flow at none against RTB2's 1. NxGen Peak Flow also leads on iOS requirement (12.0 vs 15.1). 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
Both are free to download. RTB2 sells 1 in-app purchase, starting at $2.99 per month. NxGen Peak Flow asks for nothing beyond the download.
| Parameter | NxGen Peak Flow | RTB2 |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | — | Every 5 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 55 MB | 46 MB |
| Age rating | 17+ | 4+ |
| Developer | Safey Medical Devices Ltd | Bbytetechworks LLC |
In-app purchases
NxGen Peak Flow
No in-app purchases
RTB2
- RTB2 Pro$2.991 Month




