# +507Safe vs Sonic Wave

The clearest difference is in-app purchases: +507Safe at none against Sonic Wave's 2. Sonic Wave's advantage is update cadence (fortnightly vs every 28 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sonic Wave sells 2 in-app purchases, starting at $6.99 per 7 days. +507Safe asks for nothing beyond the download.

+507Safe ships an update every 28 months, Sonic Wave fortnightly. The most recent releases landed on October 3, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | +507Safe | Sonic Wave |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (27 ratings)](https://appshunter.io/ios/app/sonic-wave-speaker-test/id6449284521/reviews)** |
| Number of ratings | — | **27** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 84 MB | 34 MB |
| Requires iOS | **12.3** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SoftGuard Technologies LLC](https://appshunter.io/developer/1646125906) | [佳伟 薛](https://appshunter.io/developer/1628251392) |

## What reviewers say

### +507Safe

[App page](https://appshunter.io/ios/app/plus-507safe/id1469931145)

**In-app purchases:** none


### Sonic Wave

[App page](https://appshunter.io/ios/app/sonic-wave-speaker-test/id6449284521)

Test your device's speakers by adjusting tone frequency and choosing clean sounds. Measure decibels and hertz with a single click. Offers weekly and monthly subscription options for full access.

**Highlights:** Speaker tone adjustment, Clean sound selection, Decibel and Hertz measurement, Stereo testing, Frequency control

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sonic Wave Subscription Week | $6.99 | per 7 days |
| Sonic Wave Subscription Month | $12.99 | per month |


## Frequently asked questions

### Is +507Safe free?

+507Safe is free to download, with no in-app purchases.

### Is Sonic Wave free?

Sonic Wave is free to download, with in-app purchases available.

### Do +507Safe or Sonic Wave have ads?

Neither +507Safe nor Sonic Wave shows ads.

### Which is updated more often, +507Safe or Sonic Wave?

+507Safe ships an update every 28 months, and Sonic Wave fortnightly. Most recently, +507Safe was updated on October 3, 2026 and Sonic Wave on October 13, 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.*