Charger Master Pro vs iSutra
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Charger Master Pro
Enhance your charging experience with custom sounds, animations, and detailed battery analysis. It offers tools to test charging speed, estimate battery life, and provides maintenance tips. Personalize your device's charging visuals and gain insights into its power performance.
- Customizable charging sounds
- Exquisite charging animations
- Automatic charging test
- Detect charging power
- View charging time and speed
- Battery life calculator
- Battery maintenance tips
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The charging sound is now online, making you the brightest boy in the village instantly! Charging sound, unplugged sound, full battery sound, low battery sound, there is always one that belongs to you~ New function of charging play, carefully design a number of exquisite animations, reject the fuzzy mosaic animation, bring different charging experience. New feature of automatic charging test is comming. After connecting to the charging cable, the Charger Master Pro can automatically start the test without manually opening the APP. In [Tools-Automatic charging test], you can view the detailed tutorial~ (iOS14 system required). Charger Master Pro will be a good companion for your charger. It uses a well-designed algorithm and has been tested by many users for tens of thousands of times. It can quickly and accurately measure the charging power of your device and help you find the best charger. 【FEATURES】 1. Detect the charging power of the current device. 2. Charging display, charging sound. 3. View the charging time, capacity, speed and other parameters of your charger. 4. View the current device's adapter charger, PD fast charging power, wireless charging power and other parameters. 5. Record detailed test results, and can set test charger to facilitate retrospective. 6. Support to add custom charger model, power, brand and interface. 7. Battery life calculator can estimate battery life based on capacity and power consumption. 8. The charging calculator can estimate the time required to fully charge the battery. 9. Battery capacity conversion can quickly convert watt-hours and milliamp-hours. 10. Battery maintenance tips can help you better extend battery life. 11. Hundreds of thousands of HD animations and wallpapers have been launched. 12. Well-designed home screen widgets to make your desktop look new
iSutra
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iSutra is an offline sutra reading and practice app. Open a Daily Sutra, compare Chinese and English with optional vernacular notes and pinyin, follow recitation highlighting, trace a line by hand, and dedicate the day. No account, no ads, no tracking. Texts are built in and work without a network. For study and cultural learning only. This is not just a source-text browser. The category is crowded. iSutra puts the difference in bilingual reading, highlighted recitation, woodfish counting, handwritten tracing, daily practice, and a Daily Sutra that reaches you through widgets, Lock Screen, Control Center, and voice shortcuts. It is made for education and cultural study. It does not tell fortunes. Built-in library Browse Prajna, Lotus, Avatamsaka, Pure Land, Ksitigarbha, esoteric mantras, Chan, Forty-two Chapters, and Eight Awakenings. Long works open by section: Diamond in thirty-two parts and Ksitigarbha in thirteen chapters, still offline. Also included: Heart Sutra, Amitabha Sutra, Universal Gate, Platform Sutra, Samantabhadra vows, Medicine Buddha vows, and mantra excerpts. It does not claim to be the whole canon. 1. Daily Sutra: today's text, continue reading, famous lines, local reminders, and shortcuts to recitation, chanting, copy-sutra, practice, study, random, and keyword hunt. A widget can switch it. 2. Bilingual close reading: bilingual, Chinese only, or English only. Toggle vernacular, English, and pinyin. Interface in Simplified Chinese, Traditional Chinese, and English. Type size, vertical layout, section navigation, notes, history, and immersive mode. 3. Recitation studio: line highlighting, adjustable pace and voice, continuous play, background audio, lock-screen remote, looping, and a Live Activity where allowed. 4. Woodfish chanting: today, lifetime, and streak counts. Targets such as 27, 54, 108, or 1080. Wood, deep, bright, soft, and qing sounds. Progress on the Daily Chant widget and Lock Screen. 5. Copy-sutra tracing: on iPhone and iPad, trace a line on paper-like canvas. Switch ink, thickness, and pen. Undo a stroke. Guide text can be tracing, faint, or hidden. Save a line to Photos or export the whole text. 6. Daily practice: separate morning and evening lists, check items, mark the day complete, and read or write a dedication. 7. Chant study: fade, fill-in, check, and quiz. Mark familiar, learned, or mastered. Keyword Hunt asks you to recall a line from a character. 8. Browse: find a text by category, theme, or translator. Diamond and Ksitigarbha open a volume catalog first. Layout can be list, grid, or cards. 9. Favorites: star a text, build lists, read in sequence, or study in a batch. Optional cloud sync is available. 10. Search: Chinese or English in titles, translators, and lines. System search, deep links, and Home Screen quick actions open Daily Sutra, recitation, chant, copy-sutra, practice, and more. 11. Widgets and system: Daily Sutra, famous lines, favorites, study progress, and Daily Chant on Home Screen, Lock Screen, and StandBy. Live Activities for reading and chanting. Control Center can hold Daily Sutra, recitation, chant, practice, and more. 12. Dharma cards: turn a line into a card, pick a style, save to Photos, or share. 13. Look and data: accents and alternate icons. Settings cover language, pinyin, vertical text, Live Activities, voice, pace, and notifications. Data stays on device by default. Optional system cloud sync can update favorites, lists, practice, chant counts, progress, history, and notes. 14. Privacy: no account, no ads, no third-party analytics. Core reading is offline and is not uploaded. Source texts are public-domain Chinese translations. Some English is public-domain or study wording. Vernacular notes are for learning, not religious instruction or academic authority. Read one sutra into one day. Welcome to iSutra.
Screenshots
Verdict
The clearest difference is ads: iSutra at none against Charger Master Pro's shown. iSutra also leads on price ($0.99 vs $2.99). On in-app purchases, device support and iOS requirement 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
Charger Master Pro costs $2.99 and iSutra $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Charger Master Pro | iSutra |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | 4.4 (160 ratings) — better | — |
| Positive reviews | 32.8% of reviews | — |
| Number of ratings | 160 — better | — |
| Update frequency | Monthly | — |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 28 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | 东海 刘 | 天从 何 |
In-app purchases
Charger Master Pro
No in-app purchases
iSutra
No in-app purchases









