# SANDISK vs 3Sign Documents

The clearest difference is update cadence: 3Sign Documents at every 4 days against SANDISK's every 3 weeks. SANDISK's advantage is chart position (#146 vs unranked). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SANDISK ships an update every 3 weeks, 3Sign Documents every 4 days. The most recent releases landed on October 22, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | SANDISK | 3Sign Documents |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (24K ratings)](https://appshunter.io/ios/app/sandisk/id6504174888/reviews)** | — |
| Number of ratings | **24K** | — |
| Positive reviews | 21.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free | — |
| Best chart rank | **#146** | — |
| Size | 80 MB | 21 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [SanDisk](https://appshunter.io/developer/646153887) | [giovanni vaccalluzzo](https://appshunter.io/developer/1352731211) |

## What reviewers say

### SANDISK

[App page](https://appshunter.io/ios/app/sandisk/id6504174888)

**Currently charting:** #146 Top Free · Productivity (US App Store)

Easily back up, manage, and protect your digital content. Organize files, free up space by transferring to compatible storage, and secure important memories with password protection.

**Highlights:** Organize files with an intuitive interface, Browse photos and videos in timeline or grid views, Free up space by transferring files, Automatic backup of photos, videos, and contacts, Secure files with encryption and password protection, View storage insights for connected devices

**In-app purchases:** none

**What reviewers like**

- 🚀 Great for photo backups
- 🚀 Seamless experience
- 👍 Intuitive and user-friendly
- 👍 Helpful for managing storage
- 💡 Explore feature with partner integrations

**What reviewers complain about**

- 🐛 Doesn't recognize USB drives on newer iPhones
- 🐛 Buggy and glitchy
- 🐛 Unstable and disconnects during backups
- 👎 Lacks key features from previous app
- 👎 Complicated and confusing to use

**Reported bugs**

- App doesn't recognize iXpand drives on iPhone 16
- Frequent error messages and failed backups
- Incompatible with older iOS versions and devices
- Photos and videos not displaying properly

**Requested features**

- Allow manual selection of files to transfer
- Bring back date-based photo organization
- Add option to delete photos from phone after backup
- Improve search and sorting capabilities
- Restore private/secure folder functionality


### 3Sign Documents

[App page](https://appshunter.io/ios/app/3sign-documents/id6781716969)

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

**In-app purchases:** none


## Frequently asked questions

### Is SANDISK free?

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

### Is 3Sign Documents free?

3Sign Documents is free to download, with no in-app purchases.

### Do SANDISK or 3Sign Documents have ads?

Neither SANDISK nor 3Sign Documents shows ads.

### Which is updated more often, SANDISK or 3Sign Documents?

SANDISK ships an update every 3 weeks, and 3Sign Documents every 4 days. Most recently, SANDISK was updated on October 22, 2026 and 3Sign Documents on October 11, 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.*