# DaysyDay Partner vs KoderRun

The clearest difference is in-app purchases: DaysyDay Partner at none against KoderRun's 2. DaysyDay Partner also leads on iOS requirement (12.0 vs 15.1). KoderRun's advantage is update cadence (every 8 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. KoderRun sells 2 in-app purchases, starting at $3.99 per month. DaysyDay Partner asks for nothing beyond the download.

DaysyDay Partner ships an update every 2 months, KoderRun every 8 days. Both last shipped on October 3, 2026.

## The numbers

| Metric | DaysyDay Partner | KoderRun |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (8 ratings)](https://appshunter.io/ios/app/daysyday-partner/id1533070954/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | Free | — |
| Size | 56 MB | 56 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Valley Electronics](https://appshunter.io/developer/811106694) | [Peter Engelhard](https://appshunter.io/developer/1884123156) |

## What reviewers say

### DaysyDay Partner

[App page](https://appshunter.io/ios/app/daysyday-partner/id1533070954)

This application allows users to view a partner's fertility data from another app. It displays past, present, and predicted fertility statuses, along with temperature curves and shared cycle details like menstruation and ovulation.

**Highlights:** View partner's fertility data, Calendar view of fertility status, Temperature curve overview, Share menstruation and ovulation data, Add personal notes, Comprehensive cycle understanding

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

**In-app purchases:** none


### KoderRun

[App page](https://appshunter.io/ios/app/koderrun/id6760363375)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KoderRun Pro – monthly | $3.99 | per month |
| KoderRun Pro – yearly | $44.99 | per year |


## Frequently asked questions

### Is DaysyDay Partner free?

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

### Is KoderRun free?

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

### Do DaysyDay Partner or KoderRun have ads?

Neither DaysyDay Partner nor KoderRun shows ads.

### Which is updated more often, DaysyDay Partner or KoderRun?

DaysyDay Partner ships an update every 2 months, and KoderRun every 8 days. Most recently, DaysyDay Partner was updated on October 3, 2026 and KoderRun on October 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.*