Chem Calc vs AiScriber
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chem Calc
This app provides a comprehensive suite of tools for chemistry calculations, including equation balancing, molar mass computation, and gas law solutions. It features an interactive periodic table and works offline for most functions, making it ideal for students and professionals.
- Interactive Periodic Table with element properties
- Reaction search and automatic equation balancing
- Molar mass calculator with detailed breakdown
- pH and Acid–Base calculations
- Ideal Gas Law solver
- Concentration and dilution tools
- Calculation history and unit converter
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Chem Calc is a powerful and easy-to-use chemistry calculator for students, teachers, and professionals. It helps you solve chemical problems, balance equations, and perform accurate calculations — both online and offline. Most features work offline. Internet access is required only for reaction search. Key Features Interactive Periodic Table Explore all chemical elements with detailed properties: - atomic number and atomic mass - electron configuration - electronegativity - atomic radius and oxidation states - standard state and physical properties Tap any element to view full information. Reaction Search and Equation Balancer - Search for common inorganic and organic reactions - Automatic equation balancing - Correct stoichiometric coefficients - Support for complex formulas and brackets Molar Mass Calculator Calculate molar mass for any valid chemical formula (for example: C6H12O6, Fe2O3, KMnO4). - detailed element breakdown - support for nested brackets - crystal hydrates (CuSO4·5H2O) - pH and Acid–Base Calculations - pH calculation for acids and bases - concentrations of H⁺ and OH⁻ - support for weak acids and bases using pKa / pKb Gas Laws and Ideal Gas Calculator Solve problems using the ideal gas equation PV = nRT. - pressure, volume, temperature, amount of substance - automatic unit conversion (Pa, atm, mmHg, L, mL, K, °C) Concentration and Dilution Tools - molarity, molality, normality - mass fraction and volume fraction - dilution and solution mixing calculations Calculation History All recent calculations are saved so you can quickly return to previous results. Unit Converter Convert: - mass, volume, amount of substance - concentration units - number of particles (Avogadro’s number) Change units without re-entering values. Why Choose Chem Calc - Accurate and reliable data based on standard chemistry references - Clean and intuitive interface - Works offline for most calculations - Suitable for school, university, and laboratory use Regular updates with new features and improvements Download Chem Calc and keep all essential chemistry calculations in one app — no paper tables or external references needed. Follow updates: https://t.me/chemcalc_en Privacy Policy: https://www.notion.so/Privacy-Policy-204d504d7d5a80218d28dee6633990d5?source=copy_link Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
AiScriber
This app transcribes audio and video to text entirely offline using on-device AI. It supports over 40 languages and allows for easy export of transcripts and subtitles, keeping your data private and secure.
- 100% offline transcription
- On-device AI for accuracy
- Supports 40+ languages
- Generate subtitle files
- Highlight and organize transcripts
- Export to PDF/TXT
- No length limits
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Transcribe audio and video 100% offline - nothing ever leaves your iPhone or iPad. AiScriber turns lectures, meetings, interviews, podcasts and voice memos into accurate text using on-device AI. No cloud servers. No account. No internet connection required. It works in airplane mode, on a plane, in a basement, or anywhere your recordings need to stay confidential. Perfect for professionals, students, journalists, researchers, content creators, and anyone who needs fast, accurate transcripts on the go. Key Features: • 100% Offline & Private: Transcribe audio and video entirely on your device. Your recordings never leave your iPhone or iPad, so confidential material stays confidential. No cloud, no logins, no tracking. • Accurate On-Device AI: Advanced local AI delivers high-precision transcripts, even with technical terms and proper names. Supports 40+ languages with automatic language detection. • Audio and Video: Import files of any length and any common format, or record directly in the app. AiScriber handles lectures, meetings, interviews, podcasts and video files alike. • Subtitles & SRT: Generate subtitle files from any video in a single tap. • Highlight & Organize: Mark important moments with multi-color text highlights. Navigate long transcripts and find key quotes at a glance. • Export & Share: Export transcripts (with highlights) to PDF or TXT for reading, sharing or editing. • No Length Limits: Transcribe long recordings without per-minute quotas or upload waits. • Customizable Display: Adjust font size, line spacing and page layout. Switch between Light and Dark modes. • Full iPad Support: Optimized layouts and Stage Manager-friendly multitasking for power-user workflows. Common Use Cases: • Lectures & classes - capture every word, then highlight key concepts • Meetings & standups - turn recordings into searchable notes • Interviews & podcasts - produce ready-to-edit transcripts • Voice memos - convert quick thoughts into clean text • Videos - generate caption / subtitle files in one tap Why AiScriber: • 100% on-device processing - no internet required • No account, no cloud, no tracking • Works in airplane mode and on flights • One tool for audio, video, voice memos and live recordings Boost your productivity with a transcription tool that works anywhere, even without internet. AiScriber turns voice into accurate text while keeping your data private and secure on your device. Privacy policy: https://acidanthera.pages.dev/privacy-policy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Chem Calc at every 8 days against AiScriber's every 6 weeks. On price, rating, ratings volume and ads 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. Chem Calc sells 3 in-app purchases, starting at $1.99 per month and AiScriber sells 3 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Chem Calc against 5.0 for AiScriber. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Chem Calc ships an update every 8 days, AiScriber every 6 weeks. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.
| Parameter | Chem Calc | AiScriber |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 8 days — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 26.0 |
| Further details — not scored | ||
| Size | 76 MB | 163 MB |
| Age rating | 4+ | 4+ |
| Developer | Fanis Kalimullin | Kiryl Radabolski |
Customer experience
Chem Calc
AiScriber
In-app purchases
Chem Calc
- Pro subscription (1 Month)$1.991 Month
- Premium Yearly (1 year)$19.991 Year
- Premium$5.99
AiScriber
- Premium week subscription$5.997 Days
- Premium yeat subscription$24.991 Year
- Premium yeat subscription7 Days trial$49.991 Year









