Filters vs MXTNote
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Filters
This application assists in calculating electronic filter components for speaker systems. It automatically determines inductor and capacitor values based on desired impedance and cutoff frequency, and designs circuits for various speaker types. Users can visualize frequency and phase diagrams for their custom speaker designs.
- Automatic electronic component calculation
- Frequency and phase diagram display (Bode plots)
- Electronic circuit schema display
- Support for various speaker types (high, mid, low, sub)
- First and second-order filter design
- Complete filter theory and formulas
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"Filters" is an application for the calculation of electronic filters for the construction of speaker systems. The program automatically calculates the values of electronic components (inductors, capacitors) of electronic filters depending by the desired speaker impedance and the cutoff frequency. The software can calculate and design the circuits (filters) for high, medium, low, sub woofer, etc... first and second order. Once calculated the filter’s circuit the app will automatically design for You the frequency and phase diagrams (Bode plots). Build the speakers of your dreams with "Filters"! Features: - Automatic calculation of the electronic components of the filters for high, medium, low, sub woofers etc... - Display of frequency and phase diagrams (Bode plots) for the calculated values of the circuit’s electronic components - Display electronic circuit’s schema (filter) - Complete theory for formulas/circuits for all the filters implemented in "Filters"
MXTNote
This app helps organize research and study materials by linking PDFs, notes, and web pages. It offers PDF reading, text and handwriting notes, and an arXiv explorer for academic papers. Create a knowledge graph to visualize connections between your research fragments.
- PDF reader with link navigation
- Text and handwriting note-taking
- Link notes and PDFs to create a knowledge graph
- ARXIV explorer for academic papers
- Web page import (HTML to PDF)
- OCR and image search for PDFs
- Sync across devices
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MXTNote is a free PDF reader and note taking app. When we study for a subject, we start by collecting reference, document idea fragments, then we expand our knowledge structure by creating links between these fragments, or add more content around them. MXTNote provide ways to simplify some of these steps Here are some examples: - A PDF references another PDF, you can select the two location and link them. - After embedding a selection from PDF to notebook, a two way link is automatically created between PDF and notebook. - Link can be created between notes to form a graph, to capture a knowledge/task dependency At block level, MXTNote consists of the following: - PDF reader - Text note taking - Handwriting note taking - Graph view - ARXIV explorer - Calendar Here are the detail features: (those marked with (*) requires MXTNote account, free signup) Reading: - PDF reader with thumbnail index, link navigation - Import web page (HTML will be converted to PDF) - support DJVU/MOBI (*)(file will be converted to PDF) - Text search (using text in PDF, or OCR) - Image search (useful for searching math symbols) - Translate selected text into English Notes: - Simple text note - Write on PDF or select box from PDF - Support links between notes, attach tags to notes. - Search notes by original PDF, tags, or text - Built-in split screen to copy note to notebook - Multiple page notebook with text or handwriting. - Support pressure sensitive input (Apple pencil). - Print notebook to PDF file or printer - Use Latex input for math formula or use the Math formula editor ARXIV: - Search ARXIV and download paper - Monitor ARXIV for new papers matching predefined query Sync: - Sync across all your device (*) - Available as web app Other: - In-app tutorial available for major functions please visit our website for details: https://note.mxtsoft.com/doc
Screenshots
Verdict
The clearest difference is price: MXTNote at Free against Filters's $0.99. MXTNote also leads on rating (5.0 vs 3.0) and update cadence (every 2 weeks vs every 40 months). On ratings volume, 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
MXTNote is free to download; Filters costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MXTNote holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
Filters ships an update every 40 months, MXTNote every 2 weeks. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.
| Parameter | Filters | MXTNote |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.0 (1 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 40 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 131 MB |
| Age rating | 4+ | 4+ |
| Developer | Gianluca Natalini | Tao Ma |
Customer experience
Filters
MXTNote
In-app purchases
Filters
No in-app purchases
MXTNote
No in-app purchases









