Published · Written by Long Road Software LLC. AI writes this guide and checks it against the app and manual; Mike does not review each one. How we write these guides.
MediaFlowSwift vs Silverstack and Offload Manager: Which One Fits You?
Pomfort makes two tools here. Offload Manager copies camera cards to several drives and checks every copy. Silverstack XT adds a full clip library, playback and quality control for a DIT on a film set. MediaFlowSwift also proves every copy, but it is made for people who shoot and edit their own footage: it sorts, reviews, archives and helps publish it.
What does each app actually verify?
MediaFlowSwift computes a SHA-256 checksum of every file it imports from a card, drive or folder. It then reads the whole copy back from the drive and compares the two. SHA-256 is the hash function set out in the US government’s Secure Hash Standard. Right before Clear Card deletes anything from the card, it checks again from scratch.
Pomfort says Offload Manager copies “securely using common checksum methods like xxHash, MD5, SHA1”. It can write manifest files in the latest ASC MHL format, kept by the American Society of Cinematographers’ ASC Media Hash List project. Silverstack XT does the same, per its product page, and adds a cascading copy that fills the fastest drive first.
What do Offload Manager and Silverstack do better?
They are built for a DIT working on a professional set. Offload Manager backs up to several destinations at once, runs jobs in parallel, and writes offload reports with one click. Silverstack XT adds a clip library with more than 100 metadata fields per clip and playback on SDI monitors. It also has scopes, exposure tools and QC notes, plus customizable PDF reports and CSV, ALE and XML exports for editorial, color and VFX. Pomfort says Silverstack XT runs natively on Apple silicon.
What does MediaFlowSwift do better?
Silverstack XT can sort, rate, label and search clips too, so the difference here is who each one is for. Silverstack serves a production with a DIT. MediaFlowSwift is for a creator who shoots and edits their own footage:
- Categorize and review. It gives each clip a category, files it into Category and Camera folders, and offers frame-accurate review with star ratings, tags and selects. See how to review and pick selects on a Mac.
- Free up space only after a proved copy. Clear Card and Free Up Space delete nothing until every clip is proved copied. See how to check footage copied before erasing a card.
- Search by what was said. It transcribes speech on your Mac, so you can find a clip by a word someone said in it. Pomfort’s pages don’t list speech transcripts. See how to find a clip by what was said.
- Archive to numbered drives. It records which clip went to which numbered drive. See how to label and catalog archive drives.
- YouTube drafting. Studio Pro drafts the title, description, chapters and tags from the finished video. See how to write a YouTube title, description, chapters and tags.
What are the limits on each side?
- MediaFlowSwift writes no MHL file and no DIT-style transfer report, and it has no SDI playback, scopes or ALE export. If a production needs those, Pomfort covers them.
- MediaFlowSwift copies each import to one destination. Its second copy comes later, when you archive the project to another drive. See how to keep two checked copies of a card.
- MediaFlowSwift needs an Apple silicon Mac running macOS 13 or later. Versions for Intel Macs and for Windows are not out yet.
- Pomfort’s licences end. After a timed licence or a subscription ends, Pomfort gives you read-only access to your projects.
How is each one priced?
| What you can do | MediaFlowSwift | Pomfort |
|---|---|---|
| Proving the copy | ||
| Checksum verification on every card copy | ✓ | ✓ |
| ASC MHL file and offload report | — | ✓ |
| Several destinations in one job | — | ✓ |
| On set | ||
| SDI playback, scopes, ALE export (Silverstack XT) | — | ✓ |
| After the copy | ||
| Clip library with ratings and search | ✓ | ✓ |
| Search clips by what was said | ✓ | — |
| Archive to numbered drives with a record of what went where | ✓ | — |
| Drafts YouTube titles, descriptions, chapters and tags (Studio Pro) | ✓ | — |
A dash means the feature is not offered, or is not listed on that app’s own pages.
MediaFlowSwift’s Studio plan is $49.99 a year, and Studio Pro is $99.99 a year. Both are also sold monthly, at $4.99 and $9.99. The full app runs free for 14 days, with no card needed. One key covers up to three Macs.
In US dollars, as listed in Pomfort’s store on 5 November 2026, before any tax:
- Offload Manager: $49 for 14 days, $75 for a month, or $199 for a year with that year’s updates. Each is paid once and is not renewed automatically. There is a free 10-day trial and no free tier.
- Silverstack XT: $899 a year as a subscription that renews unless you cancel. It is also sold for $109 for 10 days, $199 for a month or $359 for two months. There is a free trial and no free tier.
Which one should you pick?
Pick Offload Manager or Silverstack XT if you are a DIT, or you hand media to a production that wants ASC MHL, offload reports and a full clip library on set. Pick MediaFlowSwift if you shoot and edit your own footage on an Apple silicon Mac and want one card to become one sorted, reviewed and archived project. Try MediaFlowSwift free for 14 days, with no card, and see which one fits how you work.
Sources
- Offload Manager product page, Pomfort
- Silverstack XT product page, Pomfort
- Offload Manager licences, Pomfort store (prices checked 5 November 2026)
- Silverstack XT licences, Pomfort store (prices checked 5 November 2026)
- ASC Media Hash List, American Society of Cinematographers
- Secure Hash Standard (FIPS 180-4), NIST
- How MediaFlow verifies copies, MediaFlowSwift manual
All guides · Hedge and OffShoot alternatives for Mac · MediaFlowSwift vs OffShoot · MediaFlowSwift vs ShotPut Pro · MediaFlowSwift vs Kyno