# Blue Box vs SnapSilo

The clearest difference is price: SnapSilo at Free against Blue Box's $4.99. SnapSilo also leads on update cadence (every 4 days vs every 7 months). Blue Box's advantage is in-app purchases (none vs 1) and iOS requirement (15.0 vs 17.0). On ads and device support there is nothing between them.

SnapSilo is free to download; Blue Box costs $4.99 up front. SnapSilo sells 1 one-off in-app purchase. Blue Box asks for nothing beyond the download.

Blue Box ships an update every 7 months, SnapSilo every 4 days. The most recent releases landed on November 6, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Blue Box | SnapSilo |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.5 (4 ratings)](https://appshunter.io/ios/app/blue-box/id391832739/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 days** |
| Monetization | Paid | — |
| Size | 2 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sunshine Valley Systems](https://appshunter.io/developer/327149814) | [JAKUB PILCH](https://appshunter.io/developer/1865888226) |

## What reviewers say

### Blue Box

[App page](https://appshunter.io/ios/app/blue-box/id391832739)

Encode and decode DTMF signals using your device's microphone or keypad. Play back tone sequences with adjustable settings, and save them for easy recall. Explore various tone systems, including trunk control and coin signals, for educational and utility purposes.

**Highlights:** Encode/decode DTMF signals, Adjustable tone, delay, and volume, US, UK, and European tone systems, Multi-frequency and trunk control tones, Coin tone sequences (Red Box mode), Custom tone creation, Save and organize sequences

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

**In-app purchases:** none


### SnapSilo

[App page](https://appshunter.io/ios/app/snapsilo-screenshot-saver/id6762257240)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SnapSilo Pro | $3.99 | one-time |


## Frequently asked questions

### Is Blue Box free?

Blue Box costs $4.99, with no in-app purchases.

### Is SnapSilo free?

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

### Do Blue Box or SnapSilo have ads?

Neither Blue Box nor SnapSilo shows ads.

### Which is updated more often, Blue Box or SnapSilo?

Blue Box ships an update every 7 months, and SnapSilo every 4 days. Most recently, Blue Box was updated on November 6, 2026 and SnapSilo on November 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.*