SDS Mobile vs Slope Calculation Tool
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SDS Mobile
Access an extensive database of safety data sheets (SDS) and material safety data sheets (MSDS) on your mobile device. Quickly search for products using barcode scanning, view detailed chemical information, and respond effectively during emergencies. Share SDS documents via various communication channels.
- Access to industry-leading SDS/MSDS database
- Barcode scanning for product search
- Unlimited SDS viewing and searching
- "My Favorites" binder for frequently used SDS
- Share SDS via fax, email, text, and social media
- GHS-compliant SDS
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SDS Mobile™ — The best free way to manage your safety data sheets™ Get instant access to the innovator’s of electronic SDS management’s industry-leading database of material safety data sheets (MSDS) and reformatted GHS-compliant safety data sheets (SDS). Search and view an unlimited number of SDSs. Barcode scanning feature allows you to search for specific products that are present in your facility. Respond quickly and competently in emergency situations. Gain instant insight into the chemicals and products you are working with—all from the palm of your hand! Add an unlimited number of frequently referenced SDSs to your personal “My Favorites” binder. Forward complete SDSs by fax, e-mail, text message; or send SDS through social share to Twitter, Facebook and other apps. KHA also offers complete SDS, chemical inventory management and environmental compliance services. Find out why thousands of companies have made KHA Online-SDS™ the global choice for SDS compliance and data management services. Visit us online at www.online-msds.com, www.kha.com, ghskit.com or call 1-800-274-4995. **Please note that safety data sheets delivered by SDS Mobile™ have primarily been authored for North American markets**
Slope Calculation Tool
Calculate all aspects of a ramp's dimensions, including slope, run, length, and rise. It can also measure the slope of existing surfaces using your device's sensors. Supports various input combinations for flexible calculations.
- Calculate slope, run, length, and rise
- Supports multiple input combinations
- Measure existing surface slopes
- Uses device sensors for measurement
- Calculates slope as percentage, ratio, and angle
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With any (two inputs), the app will calculate all of ramp's information accurately: - Slope (incline). - Run (horizontal travel). - Ramp Length. - Rise (Height). - Slope (Percentage, Ratio & Angle). Possible scenarios of calculation: by adding any of the following inputs, the app shall calculates the rest: - Run & Rise. - Run & Length. - Rise & Length. - (Slope percentage, Slope Ratio or Slope Angle) with any of (Rise, Length or Run). The App has a built-in tool to measure the slope of an existing ramp or a surface, by using the capabilities of your iPhone / iPad device. * Remember to use a proper protection case though, to prevent your device from scratches and to give it a perfect flat shape, for better accuracy.
Screenshots
Verdict
The clearest difference is rating: Slope Calculation Tool at 4.3 against SDS Mobile's 3.6. Slope Calculation Tool also leads on review sentiment (71% vs 53%) and monetization model (free vs ad-supported). On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Slope Calculation Tool holds the better App Store score, 4.3 against 3.6. Both are backed by a comparable volume of ratings — 18 and 84 respectively. Written reviews point the same way: 53% of SDS Mobile's written reviews are positive against 71% of Slope Calculation Tool's.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on August 19, 2026 and September 25, 2026 respectively.
| Parameter | SDS Mobile | Slope Calculation Tool |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (18 ratings) | 4.3 (84 ratings) — better |
| Positive reviews | 53.1% of reviews | 71.4% of reviews — better |
| Number of ratings | 18 | 84 — better |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 15.5 | 12.0 — better |
| Further details — not scored | ||
| Size | 101 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | KHA, Online-MSDS | Riyad Habash |
Customer experience
SDS Mobile
Slope Calculation Tool
In-app purchases
SDS Mobile
No in-app purchases
Slope Calculation Tool
No in-app purchases
