Disk Speed: SD & Storage Test
Disk Speed: SD & Storage Test Summary
Disk Speed: SD & Storage Test is a free, ad-supported, with in-app purchases Android app in Tools by SUNSHINE SOFTWARE LABS. Released in May 2021 (5 years ago). It has about 64K+ installs and 857 ratings with a 3.46★ (mixed) average. Based on AppGoblin estimates, it reaches roughly 2.4K monthly active users and generates around $<10K monthly revenue (32% IAP / 68% ads). Store last updated Sep 25, 2026
Recent activity: 114 installs this week (402 over 4 weeks) showing below average growth , and 5.00 new ratings this week View trends →
SDK intelligence: AppGoblin detected 7 development tools(e.g. Google), 1 ad networks, 1 analytics: product,and 1 business tools integrated into Disk Speed: SD & Storage Test. View full SDK list →
Data tracking: The app's network data flows (API traffic to/from the app and its SDKs) were last crawled on Aug 15, 2026.
Disk Speed: SD & Storage Test SDKs Summary
Disk Speed: SD & Storage Test was last scanned for SDKs on 2026-05-10. Below is the overview of third-party companies detected in the app. The full list of SDKs, permissions and unknowns is available here.
Google
Square
Airbnb Engineering
Kotlin
Firebase
RevenueCat3.46★
Ratings: 857
Screenshots
App Description
Test SD card, USB and phone storage speed. Benchmark and fake SD card check.
Disk Speed measures the real read and write speed of your phone storage, SD card and USB drive. Tests use Direct I/O to bypass the cache, so you see true performance instead of inflated numbers.
KEY FEATURES
• Sequential and random 4K read/write tests at QD1, QD8 and QD32
• DiskSpeed Score with a grade and ranking against popular phones
• See what your storage can handle: 4K/8K video, RAW capture, app launches and game loading
• SQLite database and mixed 70/30 workload benchmarks
• 7 test profiles: Quick, Standard, Extended, Sustained write, Thermal stability, Fake card check and Custom
• Fake SD card check that verifies real capacity and data integrity
• Sustained write test that finds where the SLC cache runs out
• Test internal storage, microSD cards, USB OTG drives or any folder
• Detects storage type (UFS / eMMC) and shows file system and chip details
• History with a score trend and side-by-side comparison of any two runs
• Storage analyzer showing how much space apps, photos, videos and files use
• Export results as CSV or JSON, share a result card and add a home screen widget
PERFECT FOR
Checking whether a new microSD card is genuine, choosing the right card for 4K recording, comparing phones before you buy, or finding out if slow storage is making your device lag.
No account needed. Temporary test files are cleaned up automatically.