# Kudukey vs BunTracker

The clearest difference is update cadence: BunTracker at weekly against Kudukey's every 4 months. Kudukey's advantage is iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Kudukey ships an update every 4 months, BunTracker weekly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Kudukey | BunTracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Size | 29 MB | 6 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [The Sapient Advisory Trust](https://appshunter.io/developer/1685858339) | [Ryan Nacker](https://appshunter.io/developer/1305387838) |

## What reviewers say

### Kudukey

[App page](https://appshunter.io/ios/app/kudukey/id6443833265)

**Features:** macOS Compatibility

**In-app purchases:** none


### BunTracker

[App page](https://appshunter.io/ios/app/buntracker-pregnancy-tracking/id6758260498)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kudukey free?

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

### Is BunTracker free?

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

### Do Kudukey or BunTracker have ads?

Neither Kudukey nor BunTracker shows ads.

### Which is updated more often, Kudukey or BunTracker?

Kudukey ships an update every 4 months, and BunTracker weekly. Most recently, Kudukey was updated on October 25, 2026 and BunTracker on October 25, 2026.

---

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