Anggle vs panic.btn
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Anggle
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The Easiest Way to Track Your Joint Health Recovery Consistency is key when recovering from a joint injury. Use your iPhone to easily measure your joint's range of motion and monitor your recovery progress at a glance. Effortless Movement Measurement - Automatic Knee Extension/Flexion Calculation: Automatically calculates your knee's extension/flexion angle. Progress at a Glance - Visualized Trends: View your knee extension/flexion angle records visualized in a graph. - Track Changes: Easily check the changes in your knee's range of motion over time. - Discomfort Level Tracking: Monitor changes in your recorded discomfort levels. Smart Condition Logging - 0-10 Discomfort Scale: Record your level of discomfort on a simple 0-10 scale. - Progress Notifications: Receive messages when improvements or significant changes are detected. How to Use 1. Sit down and place your device on your thigh. 2. The angle will be measured automatically. 3. Record the discomfort level you felt during the measurement. 4. Check your results and compare them with previous records. Recommended For: - Individuals experiencing discomfort in knee movement. - Anyone recovering from a knee injury with rehabilitation exercises. - Those looking to improve their knee's range of motion. - Users who want to quantitatively track their exercise effectiveness. - Anyone who needs to perform regular knee condition check-ups. Privacy - On-Device Storage: All data is stored exclusively on your device. - No Server Uploads: Your data is never transmitted to any external servers. Disclaimer - This app is not a medical device and is not intended to replace professional medical advice, diagnosis, or treatment. - Use the measurement results for your own reference. Always consult with a healthcare professional for medical judgments.
panic.btn
Provides immediate physiological intervention for panic attacks and overwhelming anxiety. Features a one-tap rescue button with guided grounding sequences, clinical breathing exercises, and haptic feedback for discreet use. Content is verified by a Licensed Professional Counselor.
- One-tap rescue button
- Guided grounding sequences
- Clinical breathing tools (4-7-8, Box Breathing)
- Vagus nerve resets
- Haptic feedback for discreet use
- CBT and physiological science-based content
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STOP THE SPIRAL IN SECONDS. When a panic attack hits, you don't have time to navigate complex menus or watch a 10-minute meditation. You need a rescue tool that works now. panic.btn is a "digital first aid kit" built by Eric (Franz) Richers, a Licensed Professional Counselor (LPC) and addiction specialist. It is specifically designed to provide immediate physiological intervention when your nervous system is overwhelmed. WHY PANIC.BTN? Unlike "zen" lifestyle apps, panic.btn focuses on the science of the "Physiological Sigh" and grounding techniques used in clinical therapy to lower your heart rate and cortisol levels instantly. KEY FEATURES: The Rescue Button: One tap launches a guided grounding sequence. Clinical Breathing Tools: 4-7-8, Box Breathing, and Vagus Nerve resets. Haptic Feedback: Feel the rhythm of the breath—perfect for public situations where you can't use audio. LPC-Verified Content: Every exercise is rooted in CBT (Cognitive Behavioral Therapy) and physiological science. Privacy First: No data leaves your device. No sign-ups. No subscriptions. FROM THE FOUNDER: "I built this app for my clients to use between sessions. In a moment of crisis, you don't need a coach—you need a tool. panic.btn is that tool." — Eric Richers, LPC, MA, CADC III. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Anggle at none against panic.btn's 3. Anggle also leads on update cadence (every 4 days vs every 2 weeks). panic.btn's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17). On price and ads 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. panic.btn sells 3 in-app purchases, starting at $0.99 per month. Anggle asks for nothing beyond the download.
Anggle ships an update every 4 days, panic.btn every 2 weeks. The most recent releases landed on September 14, 2026 and June 7, 2026 respectively.
| Parameter | Anggle | panic.btn |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17 | 15.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 61 MB |
| Age rating | 4+ | 12+ |
| Developer | YUJIN JEON | Franz Richers |
In-app purchases
Anggle
No in-app purchases
panic.btn
- Monthly Pro Access$0.991 Month
- Yearly Premium Access$4.991 Year
- panic.btn Pro Lifetime Access$9.99





