# Lightning Sync vs ApprovalSignSec

The clearest difference is in-app purchases: ApprovalSignSec at none against Lightning Sync's 3. Lightning Sync's advantage is update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Lightning Sync sells 3 in-app purchases, starting at $3.99 per 3 months. ApprovalSignSec asks for nothing beyond the download.

Lightning Sync ships an update every 2 days, ApprovalSignSec every 2 months. The most recent releases landed on June 4, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Lightning Sync | ApprovalSignSec |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/lightning-sync/id6742749461/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 months |
| Monetization | Freemium | — |
| Size | 4 MB | 24 MB |
| Requires iOS | 15.6 | **14** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [振强 劳](https://appshunter.io/developer/1515679559) | [Kyler Chew](https://appshunter.io/developer/1842634886) |

## What reviewers say

### Lightning Sync

[App page](https://appshunter.io/ios/app/lightning-sync/id6742749461)

Access your iOS device's photos from your PC's web browser. Easily browse, convert images to JPG/PNG, and download them in batches. Unlock premium features with a subscription for enhanced functionality.

**Highlights:** Access photos from PC web browser, Convert images to PNG/JPG, Batch download photos/videos, Preview photos/videos, Setup web server on iOS device

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Months Premium Access | $3.99 | per 3 months |
| 6 Months Premium Access | $4.99 | per 6 months |
| Yearly Premium Access | $9.99 | per year |


### ApprovalSignSec

[App page](https://appshunter.io/ios/app/approvalsignsec/id6755142808)

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

**In-app purchases:** none


## Frequently asked questions

### Is Lightning Sync free?

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

### Is ApprovalSignSec free?

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

### Do Lightning Sync or ApprovalSignSec have ads?

Neither Lightning Sync nor ApprovalSignSec shows ads.

### Which is updated more often, Lightning Sync or ApprovalSignSec?

Lightning Sync ships an update every 2 days, and ApprovalSignSec every 2 months. Most recently, Lightning Sync was updated on June 4, 2026 and ApprovalSignSec on September 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.*