Easy Ohm's Law vs StudyTrail
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Easy Ohm's Law
This app helps you calculate voltage, current, resistance, and power. Simply input any two values, and the rest will be automatically computed with adjusted units. It supports a wide range of languages for global accessibility.
- Calculate voltage, current, resistance, and power
- Automatic unit adjustment
- Input any two values for instant calculation
- Supports 21 languages
- Available on iPhone and iPad
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Calculate voltage , current , resistance and power 1. Enter any of two items, the other items will be calculated 2. The units of calculated values will be adjusted automatically. 3. Support English, German, French, Italian, Spanish, Portuguese, Japanese, Korean, Traditional Chinese, Simplified Chinese, Russian, Polish, Czech, Finnish, Norwegian, Swedish, Malay, Thai, Vietnamese, Hindi, Indonesian, Turkish
StudyTrail
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StudyTrail は、日々の学習を記録し、教材の進捗や目標までまとめて管理できる学習トラッカーです。 学習タイマーで集中した時間を記録し、ホーム画面で今日の学習時間や復習予定をすぐに確認できます。教材ごとの進捗、カレンダー、時間割、レポートをひとつのアプリにまとめることで、学習の状態を見失いにくくします。 主な機能: 学習タイマーとセッション記録 教材、科目、試験、目標、計画の管理 カレンダーと時間割で学習予定を確認 レポートで学習時間や達成状況を振り返り ウィジェットとライブアクティビティで学習状況を確認 任意のクラウド同期で複数端末のデータを管理 集中を支援するスクリーンタイム連携機能 毎日の学習を少しずつ積み上げたい人、教材や試験ごとの進み具合を整理したい人、学習時間を可視化して習慣化したい人に向いています。
Screenshots
Verdict
The clearest difference is in-app purchases: StudyTrail at none against Easy Ohm's Law's 1. StudyTrail also leads on update cadence (fortnightly vs every 3 months). Easy Ohm's Law's advantage is iOS requirement (11.0 vs 16.0). 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. Easy Ohm's Law sells 1 one-off in-app purchase. StudyTrail asks for nothing beyond the download.
Easy Ohm's Law ships an update every 3 months, StudyTrail fortnightly. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.
| Parameter | Easy Ohm's Law | StudyTrail |
|---|---|---|
| Price | Free | Free |
| Rating | 1.5 (2 ratings) — better | — |
| Positive reviews | 69.2% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 2 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | haruto nomura |
In-app purchases
Easy Ohm's Law
- Unlock Pro feature$1.99
StudyTrail
No in-app purchases
Questions
Is Easy Ohm's Law free?
Is StudyTrail free?
Do Easy Ohm's Law or StudyTrail have ads?
Which is updated more often, Easy Ohm's Law or StudyTrail?
Other comparisons
