# Let's Sync vs BoltBox

The clearest difference is ads: Let's Sync at none against BoltBox's shown. Let's Sync also leads on iOS requirement (13.0 vs 17.0). BoltBox's advantage is review sentiment (100% vs 67%). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Let's Sync sells 10 one-off in-app purchases and BoltBox sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 10, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Let's Sync | BoltBox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/boltbox-calculator-and-tools/id6740825077/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 92 MB | 36 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Terra Virgo Corporation](https://appshunter.io/developer/906339963) | [Senol Cagir](https://appshunter.io/developer/1240140029) |

## What reviewers say

### Let's Sync

[App page](https://appshunter.io/ios/app/lets-sync/id1350450913)

Synchronize audio across multiple smartphones for shared listening experiences. Create events for silent dances, interactive stories, group workouts, and more. It's a versatile platform for personal and business use, supporting thousands of concurrent participants.

**Highlights:** Synchronizes audio across multiple smartphones, Creates shared listening events, Supports silent dances and interactive stories, Enables group workouts and worldwide events, Platform for unique business ventures, Supports up to 7,000 concurrent participants

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add 5 credits to wallet | $4.99 | one-time |
| Add 21 credits to wallet | $20.99 | one-time |
| Add 22 credits to wallet | $21.99 | one-time |
| Add 23 credits to wallet | $22.99 | one-time |
| Add 24 credits to wallet | $23.99 | one-time |
| Add 25 credits to wallet | $24.99 | one-time |
| Add 26 credits to wallet | $25.99 | one-time |
| Add 27 credits to wallet | $26.99 | one-time |
| Add 28 credits to wallet | $27.99 | one-time |
| Add 29 credits to wallet | $28.99 | one-time |


### BoltBox

[App page](https://appshunter.io/ios/app/boltbox-calculator-and-tools/id6740825077)

This utility app provides a comprehensive suite of tools for daily and professional tasks. It includes calculators, text editors, QR code functions, audio tools, and more, all within a user-friendly interface to enhance efficiency.

**Highlights:** Calculation & Conversion Tools, Text Editing & Analysis, QR Code Generation & Scanning, Audio Recording & Text-to-Speech, Password & Random Number Generation, Pomodoro Timer & White Noise

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Annual | $24.99 | per year |


## Frequently asked questions

### Is Let's Sync free?

Let's Sync is free to download, with in-app purchases available.

### Is BoltBox free?

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

### Do Let's Sync or BoltBox have ads?

BoltBox shows ads; Let's Sync does not.

### Which is updated more often, Let's Sync or BoltBox?

Let's Sync ships an update monthly, and BoltBox monthly. Most recently, Let's Sync was updated on October 10, 2026 and BoltBox on October 16, 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.*