# The Knot vs Biosim

The clearest difference is review sentiment: The Knot at 43% against Biosim's 0%. The Knot also leads on rating (4.9 vs 2.3) and update cadence (weekly vs every 5 months). Biosim's advantage is iOS requirement (12.1 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

The Knot holds the better App Store score, 4.9 against 2.3. That said, the two scores are not equally well evidenced: The Knot has 223K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 43% of The Knot's written reviews are positive against 0% of Biosim's.

The Knot ships an update weekly, Biosim every 5 months. The most recent releases landed on October 30, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | The Knot | Biosim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (223K ratings)](https://appshunter.io/ios/app/the-knot-wedding-planner-app/id457941553/reviews)** | [2.3 (3 ratings)](https://appshunter.io/ios/app/biosim/id622776961/reviews) |
| Number of ratings | **223K** | 3 |
| Positive reviews | **43.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 months |
| Monetization | Free | Free |
| Best chart rank | **#172** | — |
| Size | 455 MB | 51 MB |
| Requires iOS | 18.0 | **12.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [The Knot Inc.](https://appshunter.io/developer/321839277) | [Touch Bionics, Inc.](https://appshunter.io/developer/622776964) |

## What reviewers say

### The Knot

[App page](https://appshunter.io/ios/app/the-knot-wedding-planner-app/id457941553)

**Currently charting:** #172 Top Free · Lifestyle (US App Store)

This app helps couples plan their entire wedding from engagement to the big day. It offers tools for guest list management, vendor discovery, budget tracking, and creating a personalized wedding website. It also includes a countdown and registry features to streamline the process.

**Highlights:** Wedding countdown, Registry management, Guest list and RSVP tracking, Vendor discovery and messaging, Budget and seating chart tools, Customizable wedding website, Inspiration boards

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Helpful planning tools
- 📚 Comprehensive wedding planning resources
- 💻 Customizable wedding website
- 📋 Detailed checklists and timelines
- 💰 Budget tracking

**What reviewers complain about**

- 🇨🇦 Limited features for non-US users
- 🐛 Glitchy app and website
- 🤖 Lack of personalization options
- 🕰️ Outdated vendor information
- 🔗 Disconnected between app and website

**Reported bugs**

- Guest list data disappearing
- Formatting issues on wedding website
- Registry tab not syncing properly
- Checklist items not saving correctly

**Requested features**

- Ability to share planning with partner
- More customization for wedding website
- Improved guest list management
- Seamless integration between app and website
- Expanded vendor options for non-US locations


### Biosim

[App page](https://appshunter.io/ios/app/biosim/id622776961)

This application allows clinicians to customize prosthetic devices for clients on the go. It offers various grip options, favorite lists, hand health checks, and real-time muscle signal viewing.

**Highlights:** Customize prosthesis on the move, Access 24 quick grips and 12 customizable grips, Create favorite lists and triggers, Activate hand health check, View real-time muscle signals, Apply firmware updates

**In-app purchases:** none


## Frequently asked questions

### Is The Knot free?

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

### Is Biosim free?

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

### Which has better reviews, The Knot or Biosim?

The Knot is rated higher. The Knot averages 4.9 out of 5 from 223K ratings, while Biosim averages 2.3 from 3 ratings.

### Do The Knot or Biosim have ads?

Neither The Knot nor Biosim shows ads.

### Which is updated more often, The Knot or Biosim?

The Knot ships an update weekly, and Biosim every 5 months. Most recently, The Knot was updated on October 30, 2026 and Biosim on October 23, 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.*