Watts vs Inductor Design Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Watts
Calculate the cost of running electrical devices over time. This simple tool helps you understand your energy consumption expenses.
- Calculate device running costs
- Easy to use interface
- Track energy expenses over time
- Simple utility tool
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Small simple easy to use calculator to determine how much electrical devices cost to run over time.
Inductor Design Pro
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Inductor Design Pro is a secure, offline-first power inductor design tool for power electronics engineers and magnetic component design workflows. Core capabilities: AP-method and LI²-method core selection, joint core-and-winding iteration, Pareto non-dominated filtering with DQS five-dimension scoring (loss, core volume, thermal margin, manufacturability, risk), and automatic multi-candidate comparison. Supports custom material / core / bobbin databases merged with the built-in library. Peak flux density B_max is optional — leave blank to auto-determine from material and operating temperature; if set manually, use values appropriate to the material family to avoid excluding viable cores too early. Topologies: Buck, Boost, Forward (output filter inductor only, not the transformer), and Interleaved Buck (multi-phase, one inductor per phase), with CCM / DCM / BCM modes and full co-evaluation of core, material, air gap, temperature rise, and losses. Parameter sweep: frequency sweep and ripple-ratio / DCM sweep charts visualize how inductance and core size vary with key parameters, helping you trade off switching frequency against core size. Workflow: three-step closed loop (Specifications & Constraints → Core & Winding Selection → Summary & Report), with PDF report and JSON design-file export. Built-in core and wire database included. Privacy & data: core design runs locally; design data stays on your device and is never uploaded to the developer’s servers. Subscription and restore purchases require a network connection. Subscription: Inductor Design Pro Annual Subscription, 1-year term, auto-renews at expiry, $29.99/year (Mainland China ¥198/year; other regions as shown in the App Store). New users get a 14-day full-feature free trial — see the Subscription tab (3rd tab in the app). Manage or cancel anytime in Settings → Apple ID → Subscriptions; no refund for the current period. Privacy commitment: no data collection, no account system. Privacy Policy: https://tobebetter2026.github.io/Public-documents/InductorDesignPro/Privacy-policy.html Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Watts at none against Inductor Design Pro's 1. Watts also leads on iOS requirement (8.0 vs 15.0). Inductor Design Pro's advantage is update cadence (every 3 weeks vs every 4 months). On price, 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
Both are free to download. Inductor Design Pro sells 1 in-app purchase, starting at $29.99 per year. Watts asks for nothing beyond the download.
Watts ships an update every 4 months, Inductor Design Pro every 3 weeks. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | Watts | Inductor Design Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Code Smart LLC | 建忠 徐 |
In-app purchases
Watts
No in-app purchases
Inductor Design Pro
- Annual Subscription14 Days trial$29.991 Year
Questions
Is Watts free?
Is Inductor Design Pro free?
Do Watts or Inductor Design Pro have ads?
Which is updated more often, Watts or Inductor Design Pro?
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