Comparison

Calculation Transformers vs OSINT Toolbox

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

Head to head
About

Calculation Transformers

This electrical engineering tool simplifies complex transformer calculations for students and professionals. It offers fast, accurate results in an easy-to-understand format, aiding in design, maintenance, and analysis.

Highlights
  • Fast transformer calculations
  • Clear input structure
  • Accurate results
  • Design and troubleshooting aid
  • User-friendly interface
Features
Read full description

Calculation Transformers is a practical electrical engineering tool designed to help calculate important transformer parameters quickly and accurately. It is suitable for students, technicians, and professionals working with transformer design, maintenance, and analysis. The app simplifies complex electrical formulas and provides reliable outputs in an easy-to-understand format. With a clean interface and fast processing, it becomes a handy reference for daily engineering tasks. Key Features: Fast transformer-related calculations Clear and structured inputs Accurate and easy-to-read results Helpful for design and troubleshooting User-friendly interface Calculation Transformers supports efficient planning and understanding of transformer performance, making it a valuable companion for electrical work. in-app purchase included 
 Lifetime to unlock all calculation and remove ads Privacy Policy : https://docs.google.com/document/d/1Dn1gNdDP2AHL7sg-px4rxdLAcoGHlNB8/edit#heading=h.1ionsc3v3xmq Terms and Condition : https://docs.google.com/document/d/1t-LREPKByKaM0UkbIo4o0E1gdAYs21Oe30EfGxenEss/edit?usp=sharing

About

OSINT Toolbox

This app consolidates open-source intelligence tools into a single, privacy-focused interface for iPhone, iPad, and Mac. It analyzes various data points like domain registrations and IP reputations without requiring accounts or active probing.

Highlights
  • Consolidated intelligence modules
  • No accounts or data collection
  • Passive investigation methods
  • On-device AI for natural language queries
  • Offline investigation utilities
  • Privacy-focused design
Features
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From the developer of the award-winning Network Toolbox comes a new standard for open-source intelligence on Apple platforms. OSINT — Open-Source Intelligence — is the practice of gathering and analysing information from publicly available sources: domain registrations, DNS records, IP reputation databases, breach data, certificate logs, and more. OSINT Toolbox makes these capabilities available natively on iPhone, iPad, and Mac — with no accounts, no data collection, and no active probing of target systems. REPLACE A DOZEN BROWSER TABS WITH ONE APP Security researchers, journalists, IT professionals, and privacy-conscious investigators have long relied on a patchwork of web tools — each requiring a separate account, each handling your data differently, many operating opaquely. OSINT Toolbox consolidates the most important of these into a single, transparent, and consistent interface that works the same on every Apple device. INTELLIGENCE MODULES Enter any indicator — domain, IP address, email address, URL, file hash, ASN, phone number, username, or company name — and OSINT Toolbox automatically runs every relevant module in parallel. Results stream in live. Discovered entities can pivot automatically into new investigation threads. Built-in intelligence sources include: • DNS resolution and reverse DNS • RDAP and WHOIS registration data • Certificate transparency logs • VirusTotal, Shodan, AbuseIPDB, GreyNoise • HaveIBeenPwned, ThreatFox, MalwareBazaar • Gravatar, LinkedIn, social account presence • BGP routing, ASN info, IP geolocation • And more — with new modules added regularly Bring your own API keys for services that support it. Free modules work without any key at all. APPLE INTELLIGENCE BUILT IN OSINT Toolbox integrates Apple's on-device AI so you can describe an investigation in plain language — no need to know which modules to pick or how to format the input. Just type what you're looking for: "Check if cloudflare.com has been flagged for malware and show its DNS records and registration details" The app understands your intent, selects the right indicator type, and activates the relevant modules — entirely on-device, privately, with no data sent to any cloud service. The feature is optional and requires a device with Apple Intelligence enabled. INVESTIGATION UTILITIES A growing catalog of standalone utilities covers hashing, encoding, network calculations, DNS lookups, IP geolocation, certificate inspection, JWT decoding, CIDR calculation, URL analysis, mail header analysis, and more — all available offline, all on-device. PRIVACY BY DESIGN OSINT Toolbox is built on a strict principle: your investigation data belongs to you. • No account required • Passive only — never touches target infrastructure; queries public APIs and open data sources only • No analytics, no telemetry, no crash reporting to third parties • App Store privacy label: Data Not Collected • API keys stored exclusively in iCloud Keychain — never logged, never exported, never sent anywhere except the one service they authenticate against • All DNS queries routed through DNS-over-HTTPS • Indicator values never written to logs • No third-party SDKs or libraries of any kind NATIVE. EVERYWHERE. OSINT Toolbox is a Universal Purchase — buy once, use on all your iPhone, iPad, and Mac devices. Written entirely in Swift 6 with SwiftUI. No Electron shell. No web wrapper. No third-party frameworks. Just native Apple technology, done properly. Scan results, investigation notebooks, and settings sync automatically across all your devices via iCloud. API keys sync securely via iCloud Keychain.

Screenshots

Calculation Transformers4 screens
OSINT Toolbox4 screens

Verdict

The call

The clearest difference is price: Calculation Transformers at Free against OSINT Toolbox's $14.99. Calculation Transformers also leads on iOS requirement (13.0 vs 18.0). OSINT Toolbox's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 5 months). On rating, ads 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

CostPrice · In-app purchases · Ads · Monetization

Calculation Transformers is free to download; OSINT Toolbox costs $14.99 up front. Calculation Transformers sells 1 one-off in-app purchase. OSINT Toolbox asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Calculation Transformers against 5.0 for OSINT Toolbox. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

UpkeepUpdate frequency

Calculation Transformers ships an update every 5 months, OSINT Toolbox monthly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
Calculation Transformers versus OSINT Toolbox: the parameters behind the verdict, then further details
ParameterCalculation TransformersOSINT Toolbox
PriceFree — better$14.99
Rating5.0 (1 ratings)5.0 (3 ratings)
Positive reviews—100.0% of reviews
Number of ratings13 — better
Update frequencyEvery 5 monthsMonthly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13.0 — better18.0
Further details — not scored
Size56 MB66 MB
Age rating4+4+
DeveloperNanjibhai GorasiyaMarcus Roskosch

In-app purchases

1 purchases

Calculation Transformers

One-time1
  • Lifetime premium$9.99
None

OSINT Toolbox

No in-app purchases

Questions

Is Calculation Transformers free?
Calculation Transformers is free to download, with in-app purchases available.
Is OSINT Toolbox free?
OSINT Toolbox costs $14.99, with no in-app purchases.
Which has better reviews, Calculation Transformers or OSINT Toolbox?
Calculation Transformers and OSINT Toolbox are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.
Do Calculation Transformers or OSINT Toolbox have ads?
Neither Calculation Transformers nor OSINT Toolbox shows ads.
Which is updated more often, Calculation Transformers or OSINT Toolbox?
Calculation Transformers ships an update every 5 months, and OSINT Toolbox monthly. Most recently, Calculation Transformers was updated on October 28, 2026 and OSINT Toolbox on October 31, 2026.

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