# lo vs PulseKey Tuner

The clearest difference is price: PulseKey Tuner at Free against lo's $9.99. lo's advantage is update cadence (fortnightly vs every 2 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

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

lo ships an update fortnightly, PulseKey Tuner every 2 months. The most recent releases landed on October 6, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | lo | PulseKey Tuner |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[5.0 (29 ratings)](https://appshunter.io/ios/app/lo-fi-af/id6444068732/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Paid | — |
| Size | 17 MB | 3 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Unfiltered Audio](https://appshunter.io/developer/1638381375) | [Erkan Erdogan](https://appshunter.io/developer/1896291556) |

## What reviewers say

### lo

[App page](https://appshunter.io/ios/app/lo-fi-af/id6444068732)

This app offers a versatile toolkit for manipulating audio with a variety of lo-fi effects. Explore historical audio degradation, modern digital artifacts, and analog warmth to transform your sound.

**Highlights:** Convolution reverb with unique impulse responses, Spectral processing for MP3 simulation and pitch shifting, Digital section with bitcrusher and CD stutter, Analog section with tape saturation and noise generation, Rearrangeable processing sections, Dozens of presets for sound warping

**Features:** Vision Pro support

**In-app purchases:** none


### PulseKey Tuner

[App page](https://appshunter.io/ios/app/pulsekey-tuner/id6767927461)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is lo free?

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

### Is PulseKey Tuner free?

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

### Do lo or PulseKey Tuner have ads?

Neither lo nor PulseKey Tuner shows ads.

### Which is updated more often, lo or PulseKey Tuner?

lo ships an update fortnightly, and PulseKey Tuner every 2 months. Most recently, lo was updated on October 6, 2026 and PulseKey Tuner on October 20, 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.*