Comparison

Juno vs Cardiogram

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

Head to head
About

Juno

This app provides a non-judgmental companion for individuals living with chronic illnesses. It offers a safe space to discuss symptoms, track health data, and gain insights without unsolicited advice. Designed by those who understand, it offers personalized support for daily challenges.

Highlights
  • AI-powered chronic illness companion
  • Symptom and energy level logging
  • Pattern and trigger identification
  • Health diary and insights
  • Voice or text conversations
  • Personalized condition support
Features
Read full description

Meet Juno, your personal health assistant for life with chronic illness - trusted by over 250,000 users globally. Text Juno the same way you would message a friend. Say, “My migraine is 7 out of 10 and started after lunch,” and Juno can log the symptom, severity, and context for you. Prefer talking? Use voice instead. Juno brings compassionate support, symptom tracking, medication management, energy pacing, health insights, and community into one place—without making you complete another exhausting form. LOG SYMPTOMS BY TEXT OR VOICE Too tired for forms? Simply describe what is happening in your own words. Use Juno to: - Log symptoms, pain, mood, energy, and health notes through conversation - Record symptom severity and useful context without navigating long forms - Talk through a difficult symptom day or 3 AM flare - Remember details from your health journey - Prepare questions and talking points for medical appointments Juno personalizes support using the conditions, symptoms, and routines you choose to share, so you don’t have to explain everything again each time. No toxic positivity. No judgment. No pressure to “push through.” Juno meets you where your energy is today. TRACK SYMPTOMS AND SPOT PATTERNS Build a simple health diary that works even through fatigue, pain, and brain fog. - Review your symptom history and explore trends - Compare symptoms with activities, medication, and cycle information - See how symptoms change across days and weeks - Create PDF symptom reports to share with your care team MANAGE MEDICATIONS Keep your medication routine in one place. - Add scheduled and as-needed medications - Set medication reminders and mark doses as taken - Review your medication history and consistency - Share an organized medication list when needed PACE YOUR ENERGY Juno understands spoon theory and the reality of post-exertional crashes. - Set your energy level - Plan tasks around your available spoons - Estimate the energy cost of activities - Build routines that respect your changing capacity CONNECT YOUR HEALTH DATA Bring supported health and wearable data including Apple Health, Oura, Garmin, Bearable, Visible and CareClinic into Juno for a more complete view of your day. Review sleep, steps, heart rate, and activity alongside the symptoms and context you record. FIND PEOPLE WHO GET IT Join a chronic illness community shaped around real lived experience. - Discover posts from people with similar conditions - Join condition-based groups - Share experiences, questions, and photos - Connect through replies, profiles, and private messages BUILT FOR CHRONIC AND INVISIBLE ILLNESS Juno supports people living with fibromyalgia, POTS and dysautonomia, ME/CFS, Long COVID, endometriosis, EDS and hypermobility, MCAS, FND, lupus, arthritis, migraine, IBS, MS, chronic pain, chronic fatigue, autoimmune conditions, neurological conditions, rare disease, and other chronic or invisible illnesses. PRIVATE, SECURE, AND IN YOUR CONTROL Your health data is private and secure. We take privacy seriously and do not sell your personal health information. Juno is a supportive health and wellness assistant, not a doctor or medical service. It does not diagnose, treat, or replace professional medical advice. If you may be experiencing an emergency, contact local emergency services. Join over 200,000 people using Juno to feel more understood, more organized, and less alone. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/](https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://junocompanion.com

About

Cardiogram

Monitor your heart rate and key cardio signals in real time with a clear, scrolling graph. Designed for continuous feedback, it offers insights into energy burn and breathing rate without the need to manage workout sessions.

Highlights
  • Live heart rate monitoring
  • Scrolling cardio signal graph
  • Energy burn insights
  • Breathing rate tracking
  • Heart variability data
  • Continuous monitoring
Features
Read full description

Track your heart in real time, right from your wrist. This app requires an Apple Watch, and includes the watch app free. This app shows live heart rate with a smooth scrolling graph, along with key cardio signals like energy burn, breathing rate, and variability, designed for clarity at a glance. Built for Apple Watch first, it focuses on continuous monitoring, not workouts. No clutter, no sessions to manage — just instant feedback on how your body is responding moment to moment. An optional iPhone companion mirrors your data on a larger screen. Perfect for casual fitness, stress awareness, or simple curiosity about your heart throughout the day. The app comes with a companion watch app you need to run at the same time.

Screenshots

Juno4 screens
Cardiogram3 screens

Verdict

The call

The clearest difference is review sentiment: Juno at 70% against Cardiogram's 0%. Juno also leads on price (Free vs $0.99) and rating (4.8 vs 1.3). Cardiogram's advantage is in-app purchases (none vs 11). On ads, chart position, device support 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

Juno is free to download; Cardiogram costs $0.99 up front. Juno sells 10 in-app purchases, starting at $4.99 per 7 days. Cardiogram asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Juno holds the better App Store score, 4.8 against 1.3. That said, the two scores are not equally well evidenced: Juno has 10K ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 70% of Juno's written reviews are positive against 0% of Cardiogram's.

UpkeepUpdate frequency

Juno ships an update weekly, Cardiogram every 3 weeks. The most recent releases landed on October 21, 2026 and October 10, 2026 respectively.

Scorecard7 real differences · 4 level
Juno versus Cardiogram: the parameters behind the verdict, then further details
ParameterJunoCardiogram
PriceFree — better$0.99
Rating4.8 (10K ratings) — better1.3 (6 ratings)
Positive reviews70.0% of reviews — better0.0% of reviews
Number of ratings10K — better6
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#139 — better#187
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS16.4 — better16.6
Further details — not scored
Size244 MB1 MB
Age rating17+4+
DeveloperMarshall GouldJOhn Lyons

Customer experience

Juno

All ratings10,337 ratings
Positive95.7%
Neutral2.8%
Negative1.5%
Written reviews390 reviews
Positive70.0%
Neutral6.4%
Negative23.6%

Cardiogram

All ratings6 ratings
Positive0.0%
Neutral16.7%
Negative83.3%
Written reviews9 reviews
Positive0.0%
Neutral11.1%
Negative88.9%

Bugs and requests

Juno

Reported bugs

2 issues
  • Inability to save profile details
  • Paid features not working as expected

Requested features

2 requests
  • Improve free access and pricing model
  • Fix bugs and stability issues

Cardiogram

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Juno

Subscriptions9
  • Juno Pro Weekly$4.997 Days
  • Juno Pro Weekly$6.997 Days
  • Juno Pro Monthly Discounted$9.991 Month
Show 6 more
  • Juno Pro Monthly2 variants$14.991 Month
  • Juno Pro Monthly$19.991 Month
  • Juno Pro Yearly Discounted7 Days trial$39.991 Year
  • Quarterly3 Days trial$44.993 Months
  • Juno Pro Yearly3 Days trial$99.991 Year
  • Juno Pro Yearly7 Days trial$99.991 Year
One-time1
  • Juno Pro - Yearly Special$59.99
None

Cardiogram

No in-app purchases

Questions

Is Juno free?
Juno is free to download, with in-app purchases available.
Is Cardiogram free?
Cardiogram costs $0.99, with no in-app purchases.
Which has better reviews, Juno or Cardiogram?
Juno is rated higher. Juno averages 4.8 out of 5 from 10K ratings, while Cardiogram averages 1.3 from 6 ratings.
Do Juno or Cardiogram have ads?
Neither Juno nor Cardiogram shows ads.
Which is updated more often, Juno or Cardiogram?
Juno ships an update weekly, and Cardiogram every 3 weeks. Most recently, Juno was updated on October 21, 2026 and Cardiogram on October 10, 2026.
Which is more popular, Juno or Cardiogram?
Juno currently peaks at #139 in the App Store charts, and Cardiogram at #187. Chart position reflects recent download velocity rather than total install base.

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