Digit Whisper vs pH Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Digit Whisper
Master number recognition in multiple languages through engaging, bite-sized gameplay. See a number word and tap the correct digits on a custom keypad. Track your progress and build streaks in a distraction-free environment.
- Multilingual number recognition
- Custom number pad input
- Progressive difficulty levels
- Streak and accuracy tracking
- Distraction-free interface
- Offline play
Read full descriptionHide full description
Learn to recognize numbers in multiple languages — the fun way! DigitWhisper helps you master number recognition in German, Russian, and English through addictive, bite-sized gameplay. See a number word, tap the correct digits. It's that simple — but surprisingly challenging! HOW IT WORKS A random number appears as a word (e.g., "siebenundvierzig") Use the custom keypad to enter the digits (47) Get instant feedback and build your streak Progress through increasingly difficult levels FEATURES Three languages: German, Russian, English Custom number pad optimized for quick input Progressive difficulty levels from 0-100+ Track your streaks and accuracy Clean, distraction-free interface No ads, no subscriptions—just pure learning Works offline—practice anywhere, anytime Light and dark mode support PERFECT FOR Language learners building vocabulary Students practicing number recognition Travelers preparing for trips abroad Anyone wanting to sharpen their multilingual skills Parents teaching children numbers in different languages WHY DIGITWHISPER? Numbers are the foundation of any language, but they're often overlooked in traditional learning apps. DigitWhisper makes number recognition second nature through spaced repetition and active recall—proven learning techniques wrapped in engaging gameplay. Whether you're ordering coffee in Berlin, shopping in Moscow, or just expanding your mind, DigitWhisper gives you the confidence to understand numbers instantly in any language. Start your journey to multilingual number fluency today! Download DigitWhisper and transform those confusing number words into instant recognition.
pH Lab
Read full descriptionHide full description
pH Lab is an interactive virtual chemistry lab for iPhone and iPad that helps you understand acids, bases, and the pH scale through hands-on simulation. Key Features • Real-time pH Simulator: Select chemicals, adjust concentration and volume, and mix solutions to see pH updates instantly. • Visual pH Feedback: Watch indicator-like color changes and follow a full 0–14 pH scale. • Beginner + Advanced Modes: Start simple, then explore deeper with more calculation-focused learning. • Structured Lessons: Learn from core pH concepts to neutralization, buffers, and real-world applications. • Quizzes with Explanations: Test your understanding and review clear answer explanations. • Daily & Advanced Challenges: Complete targets, earn stars, and build your chemistry streak. • Substance Library: Browse chemicals with formulas, pH values, use cases, and safety notes. Great For • Middle school, high school, and university students • Science teachers and tutors • Self-learners who want a visual, interactive way to study chemistry Premium (One-Time Purchase) • Unlock all chemicals • Unlock all lessons, quizzes, and challenges • Access titration mode and saved experiments • Remove all ads Disclaimer: pH Lab is an educational tool and is not a substitute for real laboratory safety training.` - What’s New (v1.0): `Welcome to pH Lab 1.0! • Launch of the interactive pH simulation lab • Added lessons, quizzes, and daily challenges • Introduced one-time Premium unlock for all features
Screenshots
Verdict
The clearest difference is in-app purchases: Digit Whisper at none against pH Lab's 1. Digit Whisper also leads on ads (none vs shown) and iOS requirement (18.0 vs 26.0). On price 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. pH Lab sells 1 one-off in-app purchase. Digit Whisper asks for nothing beyond the download.
| Parameter | Digit Whisper | pH Lab |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 days | — |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 5 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Farkhod Yuldashev | ChatStick Company Limited |
In-app purchases
Digit Whisper
No in-app purchases
pH Lab
- Unlock All Features$2.99









