# Kello vs PFremote2

The clearest difference is price: PFremote2 at Free against Kello's $9.99. PFremote2 also leads on update cadence (every 5 weeks vs every 3 months) and iOS requirement (9.0 vs 13.0). Kello's advantage is rating (2.8 vs 1.7) and review sentiment (37% vs 0%). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

PFremote2 is free to download; Kello costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Kello holds the better App Store score, 2.8 against 1.7. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews point the same way: 37% of Kello's written reviews are positive against 0% of PFremote2's.

Kello ships an update every 3 months, PFremote2 every 5 weeks. The most recent releases landed on October 10, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Kello | PFremote2 |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[2.8 (5 ratings)](https://appshunter.io/ios/app/kello/id380539253/reviews)** | [1.7 (3 ratings)](https://appshunter.io/ios/app/pfremote2/id1113031077/reviews) |
| Number of ratings | **5** | 3 |
| Positive reviews | **37.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 4 MB | 7 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Coldflower Design Corp.](https://appshunter.io/developer/380539256) | [Pianoforce](https://appshunter.io/developer/1021236407) |

## What reviewers say

### Kello

[App page](https://appshunter.io/ios/app/kello/id380539253)

This app analyzes the accuracy of mechanical watches by listening to their ticking sounds through your device's microphone. It compares the watch's rhythm to the precise system clock to reveal timekeeping differences. Supports a wide range of watch frequencies and offers guidance on identifying mechanical timepieces.

**Highlights:** Microphone-based watch sound analysis, Comparison to iOS system clock, Automatic detection of 8 common watch frequencies, Guidance on identifying mechanical watches, Displays timekeeping differences

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 💡 Innovative watch timing solution at affordable price
- ✅ Accurate readings when properly configured
- 🎯 Correctly identifies beat frequency (BPH)
- ⚙️ Useful for watch regulation and adjustment
- 📱 Portable alternative to expensive timing machines

**What reviewers complain about**

- 🎙️ Highly sensitive to microphone quality and placement
- 🔇 Requires extremely quiet environment to function
- 📊 Inconsistent readings even in same position
- ⚠️ Frequent signal detection failures
- 🔄 High variability in results between measurements

**Reported bugs**

- App crashes on iPhone 5 and iOS 6
- Signal detection fails inconsistently
- Frequency auto-detection varies wildly on same watch
- Unstable signal readings despite strong initial signal
- App hangs on 'determine frequency' step

**Requested features**

- History log and data storage for watches
- Graphical representation of timing data over time
- Average readings over longer time periods
- Watch profile saving functionality
- Beat error measurement capability


### PFremote2

[App page](https://appshunter.io/ios/app/pfremote2/id1113031077)

Control your acoustic player piano's playback, volume, and all other functions remotely. Connects automatically via Wi-Fi to your Pianoforce Performance Player. An offline view is available to demonstrate functionality.

**Highlights:** Remote playback control, Volume level adjustment, Control all player piano functions, Automatic Wi-Fi connection, Offline demonstration mode

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kello free?

Kello costs $9.99, with no in-app purchases.

### Is PFremote2 free?

PFremote2 is free to download, with no in-app purchases.

### Which has better reviews, Kello or PFremote2?

Kello is rated higher. Kello averages 2.8 out of 5 from 5 ratings, while PFremote2 averages 1.7 from 3 ratings.

### Do Kello or PFremote2 have ads?

Neither Kello nor PFremote2 shows ads.

### Which is updated more often, Kello or PFremote2?

Kello ships an update every 3 months, and PFremote2 every 5 weeks. Most recently, Kello was updated on October 10, 2026 and PFremote2 on September 24, 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.*