DevIndex vs FormulaPad
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
DevIndex
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DevIndex - Your Ultimate React Native Library Discovery Tool Explore over 2,300+ React Native libraries from the official React Native Directory, all in one beautifully designed app. Key Features: AI-Powered Recommendations Get personalized library suggestions based on your project needs. Our AI analyzes your requirements and recommends the best packages. Comprehensive Library Database Access the complete React Native Directory with real-time data including GitHub stars, weekly downloads, version info, and more. Smart Filtering Filter libraries by: Platform compatibility Category: Navigation, UI Components, State Management, Animation, Storage, Networking, and more Search by name, description, or tags Detailed Library Information View complete details for each library: GitHub stats (stars, forks, issues) NPM download statistics Platform compatibility Expo support New Architecture support License information Direct links to GitHub, NPM, and documentation One-Tap Install Copy installation commands directly to your clipboard with a single tap. Beautiful Themes Choose from multiple themes including Light, Dark, and custom color schemes. Infinite Scroll Seamlessly browse through thousands of libraries with automatic loading. Always Up-to-Date Data synced directly from React Native Directory API. Perfect for: React Native developers iOS app developers Expo developers Mobile developers Download now and supercharge your development workflow.
FormulaPad
A local-first math notebook calculator for iPhone. Type natural formulas, reuse variables, and save calculations as notes. Includes practical templates and unit conversions for everyday math needs.
- Natural formula input
- Variable reuse
- Calculation history
- Math notes
- Practical templates
- Unit conversion
- Function plotting
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FormulaPad is a local-first math notebook calculator for iPhone. Type natural formulas, reuse variables, keep calculation history, save useful results as notes, and use practical templates for everyday math. FormulaPad is built for students, teachers, engineers, and anyone who wants calculations to stay organized after the answer appears. Key features: - Natural formula input and scientific functions - Variables such as price = 299 and count = 12 - Calculation history with reuse and favorites - Math notes with title, category, remarks, and result - Templates for percentage, discount, compound interest, BMI, loan payment, average, triangle area, and speed - Unit conversion for length, weight, area, volume, temperature, time, and speed - Simple function plotting for expressions such as x^2 and sin(x) - Local data storage, no account required - FormulaPad Pro is a one-time unlock, not a subscription FormulaPad does not include ads, third-party analytics, tracking, or a custom account system.
Screenshots
Verdict
The clearest difference is in-app purchases: DevIndex at none against FormulaPad's 1. DevIndex also leads on update cadence (weekly vs every 2 months) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. FormulaPad sells 1 one-off in-app purchase. DevIndex asks for nothing beyond the download.
DevIndex ships an update weekly, FormulaPad every 2 months. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.
| Parameter | DevIndex | FormulaPad |
|---|---|---|
| Price | Free | Free |
| Positive reviews | β | 100.0% of reviews |
| Update frequency | Weekly β better | Every 2 months |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Monetization | β | Free with in-app purchases |
| Devices | iPhone, iPod β better | iPhone |
| Requires iOS | 15.1 β better | 17.0 |
| Further details β not scored | ||
| Size | 37 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Dao Duong | ε°ε© εΎ |
In-app purchases
DevIndex
No in-app purchases
FormulaPad
- FormulaPad Pro$0.99









