Comparison

CalmAnchor vs RX

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

Head to head
About

CalmAnchor

Read full description

When panic strikes, your brain needs a simple, calm guide. Not a wall of text. Millions of people experience panic attacks and anxiety every year. In the moment, your heart races, your breathing tightens, and your thoughts spiral. You need something that works right now, not a meditation app that takes 20 minutes to get to the point. CalmAnchor is built for the acute panic moment. One tap opens the SOS flow, a structured step-by-step protocol that activates your parasympathetic nervous system and brings you back to calm in under 2 minutes. It works on a plane, in a meeting, or alone at home. FEATURES: • SOS Panic Button — Tap when a panic attack hits. Choose your approach (gentle or face-it head-on), then follow breathing and grounding prompts proven to reduce acute anxiety. • Breathing Exercises — 6 techniques including Box Breathing, 4-7-8, Diaphragmatic, Coherent, and Resonance Breathing. Each with a real-time animated guide. • AI Breathing Coach — Tell the AI how anxious you feel (1–10) and it recommends the right technique for your intensity level, with a personalised message to get you started. • 8 Science-Backed Lessons — Understand what panic attacks are, why your body reacts the way it does, how to identify your triggers, and how to build long-term resilience. • Panic Journal — Log episodes with intensity, triggers, and how you coped. Premium members get AI-powered insights that identify patterns and suggest coping strategies personalised to your entries. • Sleep & Ambient Sounds — Rain, white noise, forest, ocean, fireplace, and thunderstorm. Designed to reduce background anxiety and improve sleep. • Streak Tracking & Daily Tips — Build a consistent practice with session streaks and evidence-based daily reminders. HOW IT WORKS: During a panic attack, your thinking brain slows down and your alarm system takes over. CalmAnchor bypasses the need to think. Every step is obvious, immediate, and effective. Breathing activates the vagus nerve. The 5-4-3-2-1 grounding exercise pulls your focus into the present. The affirmations remind you that you are safe. Within 2 minutes, most users feel significantly calmer. The app's core SOS feature is always free, always available, and always works offline. PREMIUM MEMBERSHIP: Unlock the full CalmAnchor experience with a 7-day free trial: • All 8 anxiety lessons • AI breathing coach and AI journal insights • All 6 ambient sleep sounds • Coherent, resonance, and energising breathing techniques SUBSCRIPTION TERMS: CalmAnchor Premium is available as a monthly ($4.99/month) or annual ($29.99/year) subscription. Your subscription automatically renews unless cancelled at least 24 hours before the end of the current period. You can manage and cancel your subscription in your App Store account settings. A 7-day free trial is available for new subscribers — if you don't cancel before the trial ends, you will be charged. Privacy Policy: https://glidenova.com/CalmAnchor/privacy.html Terms of Service: https://glidenova.com/CalmAnchor/terms.html

About

RX

This app provides a versatile workout timer designed for functional fitness. It supports various training formats like AMRAP, EMOM, and Tabata with customizable durations and clear visual cues. The app offers offline functionality, a high-contrast display, and the ability to stream to external screens.

Highlights
  • Multiple workout formats (AMRAP, EMOM, Tabata, RFT)
  • Customizable work/rest intervals
  • Large, high-contrast display
  • Landscape full-screen mode
  • Work/rest color coding
  • Stream timer to TV via AirPlay
  • Offline functionality
Features
Read full description

A WOD timer in your pocket, always ready when you are. No hunting for the gym clock. No dead remote batteries. No digging through menus before a workout. RX-Timer is built for one job: start training fast, see the clock clearly, and stay focused on the work. 100% free. No account. No ads. No subscription. Just a timer that does everything you need, without getting in the way. Every workout format • Count up for AMRAP and For Time • Count down for timed efforts, with optional pre-start countdown (3, 2, 1) • Intervals with work/rest rounds for EMOM, Tabata, RFT, and chipper-style sessions • Adjust any duration down to the second. Built for the gym • Huge digits you can read from across the room. • High contrast display • Landscape full-screen mode. Tap to start, pause, or resume • Work/rest colour coding. Red and green cues like the clock at your box • Clear beeps and haptics at starts, transitions, and finish • Sound works alongside your music Stream to a TV • Mirror the timer to AirPlay displays. • Perfect when your phone is propped up or you want the whole gym to see the clock. Track your training • See how many timers you have completed and view your activity on a heat map. • Built in, on your device, with no login. Zero friction • Works offline • No sign-up required • All settings and stats stay on your phone • Sound can be turned off anytime Whether you are hitting a WOD at the box, training in the garage, or travelling without a gym clock, RX-Timer is the timer you will actually want to open every session. RX-Timer is a workout timer for functional fitness. It is not a medical device, medication reminder, or prescription app.

Screenshots

RX4 screens

Verdict

The call

The clearest difference is in-app purchases: RX at none against CalmAnchor's 2. On price and iOS requirement 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. CalmAnchor sells 2 in-app purchases, starting at $4.99 per month. RX asks for nothing beyond the download.

Scorecard1 real difference · 9 level
CalmAnchor versus RX: the parameters behind the verdict, then further details
ParameterCalmAnchorRX
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequency—Every 3 weeks
Ads—No
In-app purchasesYesNo — better
Monetization—Free
Devices—iPhone — better
Requires iOS17.017.0
Further details — not scored
Size14 MB4 MB
Age rating4+4+
DeveloperJoseph De Santa ClaraDaniel Thrnaholm

In-app purchases

2 purchases

CalmAnchor

Subscriptions2
  • Monthly Premium7 Days trial$4.991 Month
  • Annual Premium7 Days trial$29.991 Year
None

RX

No in-app purchases

Questions

Is CalmAnchor free?
CalmAnchor is free to download, with in-app purchases available.
Is RX free?
RX is free to download, with no in-app purchases.

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