Danley Tools vs Filter Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Danley Tools
This app provides essential calculators and reference materials for audio engineering professionals and enthusiasts. It offers tools to assist with various calculations needed in sound system design and analysis.
- Audio engineering calculators
- Reference materials
- Sound system design tools
- Analysis assistance
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Danley calculators and reference
Filter Calculator
Design various types of electronic filters, including RC, RL, RLC, and passive crossovers, with customizable orders and alignments. Instantly obtain component values and Bode insights for lab, classroom, or audio projects. Ideal for engineers, hobbyists, and students.
- Design RC, RL, and RLC filters (2nd-7th order)
- Butterworth & Chebyshev alignments
- Passive crossover calculations
- Twin-T notch filter design
- Instant component values
- Bode insights
- Offline-friendly dark mode UI
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Design RC, RL, and RLC filters (2nd–7th order) with Butterworth & Chebyshev alignments, passive crossovers, RLC band-pass/reject, and Twin-T notch—enter specs to instantly get component values and quick Bode insights in a clean, offline-friendly, dark-mode UI for lab, classroom, and audio/embedded work. What you can design: -RC & RL filters: low-pass / high-pass, 2nd–7th order -RLC filters: band-pass & band-reject (notch) -Butterworth: maximally flat magnitude -Chebyshev: ripple-tuned sharpness -Twin-T notch: precise mains or tone suppression -Passive crossovers: 2-way/3-way starter calculations Built for engineers, hobbyist and students, it turns specs into trustworthy parts fast—so you can prototype smarter, learn by tweaking, and move from idea to BOM with confidence.
Screenshots
Verdict
The clearest difference is in-app purchases: Danley Tools at none against Filter Calculator's 1. Danley Tools also leads on ads (none vs shown). Filter Calculator's advantage is update cadence (every 5 months vs every 36 months) and iOS requirement (15.0 vs 17.0). On price, review sentiment 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
Both are free to download. Filter Calculator sells 1 one-off in-app purchase. Danley Tools asks for nothing beyond the download.
Danley Tools ships an update every 36 months, Filter Calculator every 5 months. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.
| Parameter | Danley Tools | Filter Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 36 months | Every 5 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | sebastian rivas | Anas Abubakar |
Customer experience
Danley Tools
Filter Calculator
In-app purchases
Danley Tools
No in-app purchases
Filter Calculator
- Upgrade to Pro$2.99
Questions
Is Danley Tools free?
Is Filter Calculator free?
Do Danley Tools or Filter Calculator have ads?
Which is updated more often, Danley Tools or Filter Calculator?
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