# CANImmunize vs SeamlessMD

CANImmunize and SeamlessMD both sit at 4.6 stars, but that hides the real split: 90% of SeamlessMD's written reviews are positive against 29% of CANImmunize's. SeamlessMD also leads on monetization model (free vs ad-supported). CANImmunize's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (12.0 vs 16.4). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CANImmunize holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 46 and 109 respectively. Written reviews complicate that: 29% of CANImmunize's written reviews are positive against 90% of SeamlessMD's, so the app with the better star average is not the one people write more warmly about.

CANImmunize ships an update every 3 weeks, SeamlessMD every 2 months. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | CANImmunize | SeamlessMD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (46 ratings)](https://appshunter.io/ios/app/canimmunize/id574951915/reviews)** | [4.4 (109 ratings)](https://appshunter.io/ios/app/seamlessmd/id696595041/reviews) |
| Number of ratings | 46 | **109** |
| Positive reviews | 28.9% of reviews | **89.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Ad-supported | **Free** |
| Size | 81 MB | 69 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [CANImmunize Inc.](https://appshunter.io/developer/1494349120) | [Seamless Mobile Health Inc.](https://appshunter.io/developer/696595044) |

## What reviewers say

### CANImmunize

[App page](https://appshunter.io/ios/app/canimmunize/id574951915)

Securely store and manage your Canadian vaccination records digitally. Receive timely reminders for upcoming immunizations and stay informed about provincial schedules and disease outbreaks. Access trusted health resources and educational content.

**Highlights:** Digital immunization record storage, Vaccination reminders, Provincial schedule updates, Customized vaccination schedules, Outbreak information, Trusted health resources, Educational games and comics

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Great for tracking vaccines
- 👍 Keeps all records organized
- 👍 Handy for reminders
- 👍 Provides reliable health info
- 👍 Useful for family records

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 Data loss issues
- 🐛 Login problems
- 🐛 App not opening
- 🐛 Records disappear

**Reported bugs**

- App crashes when opening records
- App crashes on startup
- App crashes after update
- Cannot open app on older iPhones (iOS 12)
- Login errors

**Requested features**

- Option to add medical conditions
- Ability to upload PDFs
- Transfer adult child's data to their account
- Sync with Apple HealthKit
- Option to add documentation (medical exemptions)


### SeamlessMD

[App page](https://appshunter.io/ios/app/seamlessmd/id696595041)

This app provides an interactive, step-by-step guide to help you manage your healthcare journey. Receive real-time reminders for tasks like medication, diet, and appointments. Track your progress and get personalized advice based on your health checks.

**Highlights:** Interactive step-by-step guidance, Real-time task reminders, Customizable health checks, Personalized health advice, Progress tracking, Communication with healthcare team

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use and navigate
- 🤝 Reassuring and supportive during recovery
- 💡 Provides excellent information and resources
- 📞 Prompt nurse/care team follow-up
- ✅ Helps users stay on track with recovery

**What reviewers complain about**

- 🐛 App crashes and won't load
- 🐛 Technical issues and errors
- 🐛 Data not syncing with hospital records
- 🐛 Limited answer options
- 🐛 Generic surveys not tailored to specific procedures

**Reported bugs**

- App constantly crashes
- App won't load
- Error messages and things won't load
- Information not sent to doctor
- Task list doesn't carry over

**Requested features**

- Add steps tracking alongside walking minutes
- To do list refreshed daily with current day tasks
- Include specific tools to track rehabilitation exercises
- Program active and accessible three weeks prior to surgery with exercise plan
- Auto-refill for pain medication for 6-8 weeks


## Frequently asked questions

### Is CANImmunize free?

CANImmunize is free to download, with no in-app purchases.

### Is SeamlessMD free?

SeamlessMD is free to download, with no in-app purchases.

### Which has better reviews, CANImmunize or SeamlessMD?

CANImmunize is rated higher. CANImmunize averages 4.6 out of 5 from 46 ratings, while SeamlessMD averages 4.4 from 109 ratings.

### Do CANImmunize or SeamlessMD have ads?

Neither CANImmunize nor SeamlessMD shows ads.

### Which is updated more often, CANImmunize or SeamlessMD?

CANImmunize ships an update every 3 weeks, and SeamlessMD every 2 months. Most recently, CANImmunize was updated on September 23, 2026 and SeamlessMD on September 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*