Comparison

Slipstream File Transfer vs Phone Checkup

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

Head to head
About

Slipstream File Transfer

Features
Read full description

Slipstream is technically the fastest way to move big files between iPhone, iPad and Mac. Every other way uses one connection. Slipstream uses a cable and a direct wireless link at the same time, so the two speeds add up. WHY IT'S FAST • Two connections, one transfer. A USB cable and a direct wireless link carry the same file together. • In our tests, a 10 GB file went from iPhone to iPad in 1:23, at about 120 MB/s: 40 MB/s over the cable plus 80 MB/s over wireless. That's about 1.5× faster than wireless alone (AirDrop took 2:05) and about 3× faster than a USB cable alone (4:10). • These are our own measurements. Your speeds will vary with the device model, the condition of the devices, the cable and the wireless surroundings. • Unplug anytime. If one connection drops, the other one finishes the job. EASY TO USE • Open Slipstream on both devices. They find each other automatically. • Plug in a cable for extra speed, or send over wireless alone. • Tap the circle, pick your files and accept on the other side. On a Mac, just drag files onto the circle. • On iPhone and iPad, received files go to the Slipstream folder in the Files app. SAFE, START TO FINISH • Files go straight from one device to the other, never through a server or the cloud. • Every transfer is end-to-end encrypted with a fresh key. • No account, no sign-in, no tracking. Works between iPhone, iPad and Mac, in any direction.

About

Phone Checkup

Features
Read full description

Phone Checkup tests your phone or tablet from top to bottom. It walks you through the screen, touch, sound, cameras, buttons and charging one step at a time, so anyone can finish a full check in about 3 minutes. WHEN TO USE IT - Right after buying a used iPhone or iPad, while the warranty or return period lasts - Before selling, to confirm everything works and attach the results - After a drop, or whenever something feels off FREE CHECKS (8 ITEMS) - Screen (dead pixels, burn-in) - Touch (response all the way to the edges) - Speakers (bottom and earpiece) - Microphone - Cameras (every lens) - Buttons and vibration - Charging - Face ID / Touch ID BEFORE YOU BUY A checklist of what to look for on the price tag (SIM lock, battery maximum capacity, warranty and return rules) and which screens to ask the seller to show you. RESULTS AS ONE IMAGE Save or share one image with the model, OS, storage, date and a pass/fail mark for each item (watermarked in the free version). DETAILED TESTS (one-time purchase, or watch one video ad to use it once) - Clean result image without watermark - Speaker buzz sweep - Heat, throttling and battery drain (5 minutes) - Touch sampling rate (Hz) - Color and brightness uniformity - Sensors (accelerometer, gyroscope, compass, proximity) The one-time purchase unlocks everything with no time limit and removes ads. Use "Restore Purchase" when you change devices. THINGS AN APP CANNOT READ Battery maximum capacity, parts and repair history, and Activation Lock cannot be read by apps. The app shows you where to find them in Settings. Results are stored only on your device and are never sent anywhere. Privacy Policy: https://3810.pro/privacy-policy/kenpin Contact: https://3810.pro/contact

Screenshots

Slipstream File Transfer4 screens
Phone Checkup4 screens

Verdict

The call

The clearest difference is in-app purchases: Slipstream File Transfer at none against Phone Checkup's 1. Slipstream File Transfer also leads on ads (none vs shown). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Phone Checkup sells 1 one-off in-app purchase. Slipstream File Transfer asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

Scorecard2 real differences · 4 level
Slipstream File Transfer versus Phone Checkup: the parameters behind the verdict, then further details
ParameterSlipstream File TransferPhone Checkup
PriceFreeFree
Update frequencyEvery 3 daysEvery 3 days
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size3 MB10 MB
Age rating4+4+
DeveloperSeo Joon Jeon3810 Production

In-app purchases

None

Slipstream File Transfer

No in-app purchases

1 purchases

Phone Checkup

One-time1
  • Detailed Tests$2.99

Questions

Is Slipstream File Transfer free?
Slipstream File Transfer is free to download, with no in-app purchases.
Is Phone Checkup free?
Phone Checkup is free to download, with in-app purchases available.
Do Slipstream File Transfer or Phone Checkup have ads?
Phone Checkup shows ads; Slipstream File Transfer does not.
Which is updated more often, Slipstream File Transfer or Phone Checkup?
Slipstream File Transfer ships an update every 3 days, and Phone Checkup every 3 days. Most recently, Slipstream File Transfer was updated on October 29, 2026 and Phone Checkup on October 26, 2026.

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