Comparison

Zeus vs REC Disk Speed Test

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Zeus

Read full description

Main functions: Device information: name, model, system information Memory information: used memory, total memory, used storage, total storage Battery information: battery status, battery level etc.

About

REC Disk Speed Test

This utility app tests the write speed of your USB-C external drives on compatible iPhones. It provides a clear verdict on whether your drive can handle demanding video formats like ProRes, ensuring smooth recordings.

Highlights
  • Real write speed measurement (MB/s)
  • Color-coded drive readiness verdict
  • Format-by-format compatibility breakdown
  • File system support check
  • Drive details (name, capacity, free space)
Read full description

Never lose a shot to a slow drive. Recording ProRes to an external SSD is one of the best things you can do with your iPhone Pro, until the drive can't keep up and your footage stutters, drops frames or stops recording. REC Disk Speed Test tells you whether your drive is up to the job before you hit record. Plug in your USB-C drive, tap Start, and get a clear answer in seconds. WHAT YOU GET • Real write speed: See exactly how fast your drive writes, in MB/s, measured on your own iPhone. • A clear verdict: Color-coded results tell you at a glance whether your drive is ready for everything, most things, or only lighter formats. • Format-by-format breakdown: Check marks for HEVC 4K60, HEVC HDR, and ProRes 10-bit HDR at 1080p30, 4K30 and the demanding 4K60. • File system check: Find out right away whether your drive's format is supported for video capture, so you don't discover a problem on set. • Drive details: Name, capacity and free space, all on one screen. PERFECT FOR • Filmmakers and content creators shooting ProRes on iPhone • Testing a new SSD before a shoot, or before you buy more • Comparing drives, cables and enclosures to find the fastest setup • Peace of mind before an important recording Free, simple, and built by the team behind REC and Photon Camera. FROM LATENITESOFT Pair your tested drive with REC to record cinematic video in any format straight to external storage, or with Photon Camera to shoot stunning photos directly to your drive. Requires iPhone 15 Pro or a later Pro model with USB-C external storage support.

Screenshots

Zeus3 screens
REC Disk Speed Test4 screens

Verdict

The call

The clearest difference is price: REC Disk Speed Test at Free against Zeus's $0.59. Zeus's advantage is update cadence (monthly vs every 37 months) and iOS requirement (16.6 vs 18.0). On ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

REC Disk Speed Test is free to download; Zeus costs $0.59 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Zeus ships an update monthly, REC Disk Speed Test every 37 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 7 level
Zeus versus REC Disk Speed Test: the parameters behind the verdict, then further details
ParameterZeusREC Disk Speed Test
Price$0.59Free — better
Rating—3.3 (6 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—6 — better
Update frequencyMonthly — betterEvery 37 months
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad — betteriPhone
Requires iOS16.6 — better18.0
Further details — not scored
Size4 MB1 MB
Age rating4+17+
Developer道锋 刘LateNiteSoft S.L.

In-app purchases

None

Zeus

No in-app purchases

None

REC Disk Speed Test

No in-app purchases

Questions

Is Zeus free?
Zeus costs $0.59, with no in-app purchases.
Is REC Disk Speed Test free?
REC Disk Speed Test is free to download, with no in-app purchases.
Do Zeus or REC Disk Speed Test have ads?
Neither Zeus nor REC Disk Speed Test shows ads.
Which is updated more often, Zeus or REC Disk Speed Test?
Zeus ships an update monthly, and REC Disk Speed Test every 37 months. Most recently, Zeus was updated on November 7, 2026 and REC Disk Speed Test on November 3, 2026.

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