# DryEyeRhythm vs Keraring Planner

The clearest difference is update cadence: Keraring Planner at every 5 weeks against DryEyeRhythm's every 3 months. Keraring Planner also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.

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

DryEyeRhythm ships an update every 3 months, Keraring Planner every 5 weeks. The most recent releases landed on October 16, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | DryEyeRhythm | Keraring Planner |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 5.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 24 MB | 30 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [順天堂大学](https://appshunter.io/developer/1080910962) | [Claudio Curi](https://appshunter.io/developer/1090903198) |

## What reviewers say

### DryEyeRhythm

[App page](https://appshunter.io/ios/app/dryeyerhythm/id1164781008)

Assess your dry eye condition with a quick smartphone check. Track daily changes, lifestyle factors, and contribute to university research. Understand potential links between dry eye, headaches, and stiff shoulders.

**Highlights:** 5-minute dry eye measurement, Lifestyle correlation tracking, Dry eye status map, Contribution to university research, Visual results on graphs and calendars, Privacy-protected data

**Features:** Vision Pro support

**In-app purchases:** none


### Keraring Planner

[App page](https://appshunter.io/ios/app/keraring-planner/id6504206835)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DryEyeRhythm free?

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

### Is Keraring Planner free?

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

### Do DryEyeRhythm or Keraring Planner have ads?

Neither DryEyeRhythm nor Keraring Planner shows ads.

### Which is updated more often, DryEyeRhythm or Keraring Planner?

DryEyeRhythm ships an update every 3 months, and Keraring Planner every 5 weeks. Most recently, DryEyeRhythm was updated on October 16, 2026 and Keraring Planner on October 10, 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.*