# Chart2020 Connect vs K

The clearest difference is update cadence: Chart2020 Connect at fortnightly against K's every 32 months. K's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Chart2020 Connect sells 4 one-off in-app purchases and K sells 1 in-app purchase, starting at $51.99 per year. Whichever you choose, the download price is not the number that matters.

Chart2020 Connect ships an update fortnightly, K every 32 months. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Chart2020 Connect | K |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/k-d-color-contrast-sensitivity/id1530827184/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 32 months |
| Monetization | — | Free with in-app purchases |
| Size | 62 MB | 64 MB |
| Requires iOS | 8.0 | 8.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Shemesh Health Solutions PTY Ltd](https://appshunter.io/developer/578849338) | [King-Devick Test, LLC](https://appshunter.io/developer/424793545) |

## What reviewers say

### Chart2020 Connect

[App page](https://appshunter.io/ios/app/chart2020-connect/id1122000561)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 emails | $9.99 | one-time |
| 25 emails | $21.99 | one-time |
| 50 emails | $44.99 | one-time |
| 100 emails | $84.99 | one-time |


### K

[App page](https://appshunter.io/ios/app/k-d-color-contrast-sensitivity/id1530827184)

This application helps clinicians monitor and track the progression of Age-Related Macular Degeneration (AMD). It can be used by patients for home screening, with results remotely monitored by clinical staff. Early detection of wet AMD is crucial for timely treatment.

**Highlights:** Monitor AMD progression, Track dry to wet AMD, Home screening tool, Remote monitoring by clinicians, Early detection of wet AMD

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription | $51.99 | per year |


## Frequently asked questions

### Is Chart2020 Connect free?

Chart2020 Connect is free to download, with in-app purchases available.

### Is K free?

K is free to download, with in-app purchases available.

### Do Chart2020 Connect or K have ads?

Neither Chart2020 Connect nor K shows ads.

### Which is updated more often, Chart2020 Connect or K?

Chart2020 Connect ships an update fortnightly, and K every 32 months. Most recently, Chart2020 Connect was updated on October 26, 2026 and K on November 3, 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.*