MOSDAC vs DUO LINK 4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MOSDAC
This app helps users stay spiritually connected by providing daily Bible texts, a prayer wall, and information on church events. It aims to make spiritual study accessible for busy individuals on the go.
- Daily Bible text
- Prayer wall
- Upcoming events and gatherings
- Spiritual satisfaction on the go
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We understand how busy your life may be and how difficult it may be to take the time to study the Bible daily. Here at Mount Olivet Seventh-day Adventist Church, we do our best to share god’s word with all people no matter their circumstances. With our app, you have the ability to participate through our prayer wall, see upcoming events and gatherings and even learn a new bible text everyday. Our goal is that you will remain spiritually satisfied throughout the day and on the go.
DUO LINK 4
Manage and transfer files between your iOS device and a USB flash drive. Free up storage, back up data, and even charge your device. Supports a wide range of file formats for seamless integration.
- Free up iPhone/iPad space
- Charge iOS devices
- Back up contacts
- Transfer photos and videos
- Store photos directly
- Manage files
- Music and video playback
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PNY DUO LINK 4 app, designed to work with DUO LINK OTG USB 3.0 Flash Drive brings you the ability to do more when it comes to file transfer, saving, sharing, accessing and streaming. Simply connect the DUO LINK OTG USB 3.0 Flash Drive to your iPhone and iPad and start syncing, transferring, sharing files, photos, videos and more with ease. DUO LINK OTG USB 3.0 is a flash drive designed for iPhone and iPad that enables you to free up space on your iOS device, save and protrect your contents into DUO LINK and even transfer then to your computer. DUO LINK OTG USB 3.0 also provides the ability for you to charge your iPhone and iPad. Features and Benefits: - Free up space on your iPhone or iPad. - Charge your iOS device. - Back-up your contacts. - Transfer and share your videos, photos and more. - Store photos directly into DUO LINK and save space on your iPhone or iPad. - Manage files on your iPhone, iPad and on DUO LINK. - Supports independent music and video playback. - Automatically back up your photos and videos so that you don't have to. Support: Please visit PNY Support at www.pny.com/support/technical-support Supported file formats: - video: M4V/MP4/MOV - Audio: M4A, CAF, AIFF, ASF, AAC, mp3, wav - Picture: TIFF, JPEG,JPG,PNG,GIF,BMP - Document: DOC, DOCX, PAGES, RTF, TXT , PPT, PPTX, PDF, XLS, XLSX, NUMBERS, KEY, HTML PNY takes no responsibility or liability with respect to the download or usage of DUO-LINK 4 app. By downloading this app you agree to the end user license agreement from PNY, also available at http://www.pny.com/File%20Library/Unassigned/PNY--On-the-Go-End-User-License-Agreement.pdf .
Screenshots
Verdict
The clearest difference is rating: MOSDAC at 5.0 against DUO LINK 4's 2.1. DUO LINK 4's advantage is ads (none vs shown) and update cadence (every 2 months vs every 24 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
MOSDAC holds the better App Store score, 5.0 against 2.1. That said, the two scores are not equally well evidenced: DUO LINK 4 has 498 ratings behind it against 4, so its average is the more settled of the two.
MOSDAC ships an update every 24 months, DUO LINK 4 every 2 months. The most recent releases landed on September 18, 2026 and October 13, 2026 respectively.
| Parameter | MOSDAC | DUO LINK 4 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | 2.1 (498 ratings) |
| Positive reviews | — | 19.8% of reviews |
| Number of ratings | 4 | 498 — better |
| Update frequency | Every 24 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 | 11.0 |
| Further details — not scored | ||
| Size | 30 MB | 123 MB |
| Age rating | 4+ | 4+ |
| Developer | Allegheny East Conference of Seventh-Day Adventists | PNY |
Customer experience
MOSDAC
DUO LINK 4
Bugs and requests
MOSDAC
Not enough reviews yet to summarise bugs or requests.
DUO LINK 4
Reported bugs
3 issues- App fails to detect connected device
- Transferred files not visible or accessible
- Inconsistent behavior when renaming folders
Requested features
4 requests- Add 'select all' option for photos/files
- Support for more file formats
- Improve iPad app experience
- Integrate with native Files app
In-app purchases
MOSDAC
No in-app purchases
DUO LINK 4
No in-app purchases
