# Keelin vs PH

The clearest difference is update cadence: PH at fortnightly against Keelin's every 3 months. Keelin's advantage is iOS requirement (13.0 vs 15.6). 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.

Keelin ships an update every 3 months, PH fortnightly. The most recent releases landed on September 13, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Keelin | PH |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Size | 7 MB | 46 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [佳喜 肖](https://appshunter.io/developer/791981887) | [Suzhou zhongchupuhua Electric Technology Co., Ltd](https://appshunter.io/developer/1673675965) |

## What reviewers say

### Keelin

[App page](https://appshunter.io/ios/app/keelin-beacon/id1463471003)

**Features:** macOS Compatibility

**In-app purchases:** none


### PH

[App page](https://appshunter.io/ios/app/ph-solar/id6445969426)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Keelin free?

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

### Is PH free?

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

### Do Keelin or PH have ads?

Neither Keelin nor PH shows ads.

### Which is updated more often, Keelin or PH?

Keelin ships an update every 3 months, and PH fortnightly. Most recently, Keelin was updated on September 13, 2026 and PH on October 25, 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.*