Diskio vs OBsmart Ultra
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Diskio
This utility app provides precise speed tests for all your storage devices, from internal iPhone storage to external USB drives. Customize test parameters for detailed insights and identify performance bottlenecks. It offers a simple three-step process to analyze your storage's true capabilities.
- Precise disk speed testing
- Tests internal and external storage
- Customizable test parameters
- Simple three-step process
- Universally compatible with iOS devices
- Identifies performance bottlenecks
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Welcome to Diskio 2.0, the ultimate disk speed testing solution for iOS, now completely redesigned and more powerful than ever. Experience Unmatched Precision: Our advanced algorithms deliver the most accurate speed tests available for all your storage devices. Trust the numbers you see—they reflect true performance. Test Any Storage Device: From your iPhone's internal storage to external drives connected via USB-C or Lightning, Diskio measures them all with laboratory-grade precision. Customized for Power Users: Tailor your tests by adjusting file size and chunk size parameters to match your specific needs. Whether you're a tech enthusiast or IT professional, get the exact insights you require. Simple Three-Step Process: 1. Select your storage location (internal or external) 2. Choose your test parameters 3. Get comprehensive results in seconds Universally Compatible: Works flawlessly with all iOS devices and external storage solutions including USB drives and SD cards. Regularly updated for the latest iOS versions. Why Diskio Matters • Identify performance bottlenecks before they impact your work • Make informed purchases when investing in new storage • Verify you're getting the speed you paid for • Monitor drive health and performance over time Download Diskio today and discover what your storage is truly capable of!
OBsmart Ultra
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Precision ballistics solver built for accuracy& weather meter suport. Real-time corrections for long -range shooting, hunting, and tactical use.Supports user-defined units and syncing of environmental parameters.
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Verdict
The clearest difference is price: OBsmart Ultra at Free against Diskio's $5.99. OBsmart Ultra also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). Diskio's advantage is update cadence (every 5 days vs every 3 weeks). On 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
OBsmart Ultra is free to download; Diskio costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Diskio ships an update every 5 days, OBsmart Ultra every 3 weeks. The most recent releases landed on September 24, 2026 and September 18, 2026 respectively.
| Parameter | Diskio | OBsmart Ultra |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 3.9 (17 ratings) — better | — |
| Positive reviews | 44.4% of reviews | — |
| Number of ratings | 17 — better | — |
| Update frequency | Every 5 days — better | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Sergii Khliustin | 晓婷 谭 |
In-app purchases
Diskio
No in-app purchases
OBsmart Ultra
No in-app purchases
