EngiTools Pro vs Snake Identifier
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EngiTools Pro
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EngiTools Pro - The Ultimate Engineering Pocket Reference Stop wasting time searching through heavy handbooks, scattered PDFs, or unreliable websites. EngiTools Pro is the essential, all-in-one productivity app designed specifically for Mechanical, HVAC, Piping, and Civil Engineers. Whether you are on-site, in a meeting, or drafting in the office, get instant access to precise engineering data, dimensional references, and complex calculations right in your pocket. CORE FEATURES: Comprehensive Unit Converter • Convert intuitively across a massive database of engineering units. • Supports scientific notation and smart formatting for high-precision results. • Includes categories for Length, Area, Volume, Mass, Pressure, Energy, Power, and more. HVAC & Psychrometrics • Psychrometric Chart Calculator: Instantly calculate Enthalpy, Dew Point, Humidity Ratio (w), Absolute Humidity, and Density by inputting Dry Bulb and RH/WB. • Fresh Air Requirement (ASHRAE 62.1-2022): Look up required outdoor air rates (L/s·person, cfm/ft²) across various room types instantly. Supports both SI and IP units. Piping & Flange Reference • Pipe Thickness & Weight: Quickly determine Outer/Inner Diameter, Wall Thickness, and Weight per meter/foot across different nominal sizes (DN/NPS) and schedules. • Flange Dimensions (BS 1092-1): Comprehensive lookup for Weld-neck flanges (Raised face). Get exact PCD, bolt hole diameters, neck dimensions, and bolting requirements for various Pressure Ratings (PN). Fastener Dimensions (Bolt, Nut, Washer) • Accurate geometric data for Hexagon Head Bolts, Screws, Nuts, and Flat Washers. • Look up pitch, width across flats (s), width across corners (e), head height (k), and thread lengths based on metric sizes. WHY CHOOSE ENGITOOLS PRO? • Blazing Fast & Offline: No internet connection required. Get your data instantly, even in deep basements or remote sites. • Built for Professionals: Data is sourced from recognized industry standards (ASHRAE, BS, etc.). • Sleek UI: Optimized for both Light and Dark modes to reduce eye strain during long working hours. Auto-scales perfectly to your screen size. • No Interruptions: A clean, distraction-free environment tailored for engineering workflows. Upgrade your engineering toolkit today. Work smarter, calculate faster, and design with confidence using EngiTools Pro! (Note: EngiTools Pro is intended for general reference. Users should always verify calculations with official standards for critical engineering designs.)
Snake Identifier
Instantly identify snakes with a photo to determine if they are venomous. Get species information, safety tips, and first aid guidance. Works for all US and non-US species, with optional location-enhanced accuracy.
- Instant photo identification
- Venomous/non-venomous status
- Species name and classification
- Safety tips and first aid
- Location-enhanced accuracy
- Auto-save and share history
- Works for all US & non-US species
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Saw a snake? Identify it fast - know if it's dangerous. SlitherID is the fastest, most accurate snake identification app for iOS. Whether you're hiking, camping, or found a snake in your backyard, get instant answers about any snake species with just a photo. Know right away if it's venomous and how to stay safe. COVERS ALL SNAKE SPECIES WORLDWIDE: Identifies all snakes, including rattlesnakes, northern water snakes, red-bellied blacks, death adders, and thousands of other species. Works across all provinces and territories with region-specific accuracy. INSTANT CAMERA ACCESS: No time to waste when a snake shows up. Our Quick Snap feature opens your camera instantly so you can capture a photo before it slithers away. Every second counts when identifying potentially dangerous wildlife. INSTANT IDENTIFICATION Snap or upload a photo to get immediate results: Venomous or non-venomous status with clear warnings Species name and scientific classification Natural habitat and behavior Diet and characteristics Detailed safety tips and first aid info LOCATION-ENHANCED ACCURACY Share your location (optional) for even more precise identifications. We use geographic data to narrow down species based on regional distribution, giving you the most accurate results possible. Track exactly where you encountered each snake. AI SNAKE EXPERT: Chat with our snake expert and get instant answers to any questions about the snake you just spotted. AUTO-SAVE & SHARE Each identification is automatically saved to your private history. Review past encounters, compare species, and build your personal snake knowledge database. Share results instantly as a professional PDF with family, friends, or wildlife experts. PRIVACY & SECURITY FIRST Your safety matters, including your data. SlitherID works without: User accounts Email addresses Phone numbers Collecting personal information Multiple security layers help keep your data protected and private. POWERED BY ADVANCED IDENTIFICATION ENGINE Our identification engine uses cutting-edge AI trained on thousands of snake species worldwide. Get professional-level accuracy in seconds, not hours. USE IT YOUR WAY Choose what works for you: Free daily identifications OR One-time lifetime purchase - pay once, use forever OR Choose a flexible subscription! No hidden fees. No surprises. PERFECT FOR: Hikers and outdoor lovers Homeowners and gardeners Campers and nature fans Parents focused on family safety Wildlife photographers and educators Anyone who encounters snakes WHY SLITHERID? Unlike other apps that make you wait for experts or return inaccurate results, SlitherID gives you instant answers when you need them most. Whether you're dealing with a potentially venomous snake in your yard or just curious about wildlife on a trail, SlitherID delivers fast, reliable identification plus the safety info you need. Stay informed. Stay safe. Download SlitherID today. Note: Internet connection required for identification. All other features, including viewing past identifications, work fully offline. Terms of use: https://fitdaily.in/slitherid-terms-of-service/ Privacy policy: https://fitdaily.in/slitherid-privacy-policy/
Screenshots
Verdict
The clearest difference is ads: Snake Identifier at none against EngiTools Pro's shown. EngiTools Pro's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price, update cadence 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. EngiTools Pro sells 1 one-off in-app purchase and Snake Identifier sells 8 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.
EngiTools Pro ships an update fortnightly, Snake Identifier every 2 weeks. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.
| Parameter | EngiTools Pro | Snake Identifier |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (24 ratings) — better |
| Positive reviews | — | 85.7% of reviews |
| Number of ratings | — | 24 — better |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 27 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | Kui Yan Marc YU | Mayank Yadav |
In-app purchases
EngiTools Pro
- Upgrade to Premium$4.99
Snake Identifier
- Weekly Pro3 Days trial$5.997 Days
- Weekly Pro$5.997 Days
- Yearly Pro$24.991 Year
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- Yearly Pro3 Days trial$29.991 Year
- Yearly Pro7 Days trial$34.991 Year
- SlitherID Pro Pass$2.99
- Lifetime Pro$29.99
- One-time purchase$49.99






