# Zerolight Steps vs Spy Hearing

The clearest difference is in-app purchases: Zerolight Steps at none against Spy Hearing's 2. Zerolight Steps also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). Spy Hearing's advantage is update cadence (monthly vs every 6 months). On price and ads there is nothing between them.

Both are free to download. Spy Hearing sells 2 in-app purchases, starting at $3.99 per 7 days. Zerolight Steps asks for nothing beyond the download.

Zerolight Steps ships an update every 6 months, Spy Hearing monthly. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Zerolight Steps | Spy Hearing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (13 ratings)](https://appshunter.io/ios/app/spy-hearing-sound-amplifier/id6756632119/reviews)** |
| Number of ratings | — | **13** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | — | Subscription |
| Size | 99 MB | 19 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | +4 |
| Developer | [Burckaan Gurgun](https://appshunter.io/developer/1593734693) | [Hina Batool](https://appshunter.io/developer/1787073141) |

## What reviewers say

### Zerolight Steps

[App page](https://appshunter.io/ios/app/zerolight-steps/id6747674625)

**Features:** macOS Compatibility

**In-app purchases:** none


### Spy Hearing

[App page](https://appshunter.io/ios/app/spy-hearing-sound-amplifier/id6756632119)

Amplify sounds up to 200x with this app, turning your device into a powerful hearing aid. Enhance conversations, lectures, or recordings with real-time audio boosting and fine-tune frequencies using a built-in equalizer. It also offers background recording capabilities for uninterrupted capture.

**Highlights:** Sound amplification up to 200x, Live microphone monitoring, Built-in sound equalizer, Background recording, Noise canceling filters, External microphone support

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Lifetime Access | $17.99 | one-time |


## Frequently asked questions

### Is Zerolight Steps free?

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

### Is Spy Hearing free?

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

### Do Zerolight Steps or Spy Hearing have ads?

Neither Zerolight Steps nor Spy Hearing shows ads.

### Which is updated more often, Zerolight Steps or Spy Hearing?

Zerolight Steps ships an update every 6 months, and Spy Hearing monthly. Most recently, Zerolight Steps was updated on November 8, 2026 and Spy Hearing on November 5, 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.*