Calctan vs CTRL
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calctan
This app offers a high-precision scientific and financial calculator with a smart formula workspace and an auditable tape for tracking calculations. It's designed for students and professionals needing to edit complex expressions, manage finances, and export reports.
- Smart formula editing with tap-to-edit cursor
- Undo/Redo functionality
- Advanced scientific math functions
- Auditable calculation tape
- Exportable reports via AirPrint/PDF
- iCloud sync across devices
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Calctan is a high-precision scientific and financial tape calculator designed for iPhone and iPad. Built for students, engineers, accountants, and business professionals, Calctan bridges the gap between scientific computing and practical everyday finance. Edit complex formulas with ease, audit running totals on a printable tape, and enjoy a distraction-free workspace with zero ads. KEY FEATURES 1. SMART FORMULA WORKSPACE • Tap-to-Edit Cursor: Tap anywhere in your expression to fix numbers, operators, or parentheses instantly—no need to clear your work and start over. • Dedicated Undo & Redo: Step backward and forward through previous edits effortlessly with intuitive controls. • Live Syntax & Instant Preview: Real-time calculation results with automatic balancing of parentheses as you type. • Fluid Multi-Line Display: Dynamic scaling ensures long, complex formulas are never cut off. 2. ADVANCED SCIENTIFIC ENGINE • Complete Math Suite: Trigonometric functions (radians/degrees, inverse, hyperbolic), factorials, permutations, powers, roots, modulo, and logarithms. • True Order of Operations: Context-aware order of operations with high-precision calculations that eliminate floating-point rounding errors. • Built-in & Custom Constants: Standard libraries for mathematics, physics, and chemistry, plus custom slots for tax rates, currency multipliers, or business margins. 3. ACCOUNTING TAPE & REPORT EXPORT • Auditable Calculation History: Every calculation is automatically logged on a persistent digital paper tape. • Label & Categorize: Add custom notes, tags, and project labels to organize expenses, homework sets, or client billing. • Batch Operations: Select multiple past entries to calculate running totals on the fly. • AirPrint & PDF Export: Generate clean, itemized calculation sheets ready to print, save, or share. 4. DESIGNED FOR PRODUCTIVITY • Haptic Feedback & Precision Control: Smooth cursor dragging and tactile feedback optimized for high-speed input. • iPad Multitasking: Full support for Split View, Slide Over, external keyboards, and trackpads. • Seamless iCloud Sync: Keep your saved formulas, custom constants, and calculation tapes synchronized across all your devices. • High-Contrast Themes: Handcrafted color palettes engineered to minimize eye strain during long study or work sessions. • Private & Ad-Free: Zero tracking, no telemetry, and no ads. Your calculations remain strictly on your device and private iCloud storage. PERFECT FOR: • STEM & College Students: Algebra, calculus, physics, and lab assignments with clear, step-by-step editing. • Finance & Accounting: Tax prep, budgeting, invoice balancing, and expense verification with itemized logs. • Retail & Small Business: Fast customer totals, margin/discount calculations, and printable audit trails.
CTRL
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CTRL smart home merupakan aplikasi pengatur dan pengendalian berbagai smart device yang kamu punya untuk memberikan kemudahan di rumah. Mudah untuk digunakan Mudah untuk pairing device Penjadwalan saat perangkat ON dan OFF Pengaturan berdasarkan cuaca dan suhu Buat skenario Anda sendiri Buka dan Kontrol perangkat di mana saja Bagikan perangkat dengan anggota keluarga Anda untuk mengontrol Atur & ubah status perangkat di mana saja Kontrol suara dengan Third Party Voice Services Alexa dan Google Assistant Terhubung dengan Aktivitas Sehari-hari Once when device connected, kamu dapat mengatur: Waktu pagi hari saat lampu mati dan menyala saat malam hari Kendalikan kamera CCTV sesuai yang diinginkan saat CCTV terhalang benda lain Gunakan fitur stop motion detection agar lampu dapat menyala otomatis saat kamu lewat dll Keamanan CTRL app memberikan jaminan keamanan terpercaya, karena kamu tidak memerlukan informasi pribadi saat melakukan pendaftaran akun. Kamu juga dapat menghubungi kami untuk pertanyaan lebih lanjut melalui platform berikut: Instagram: @ctrl.id.official Facebook: @ctrl official store Email: officialstore@ctrl.co.id
Screenshots
Verdict
The clearest difference is update cadence: CTRL at fortnightly against Calctan's every 3 months. CTRL also leads on iOS requirement (13.0 vs 16.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Calctan ships an update every 3 months, CTRL fortnightly. The most recent releases landed on November 6, 2026 and October 25, 2026 respectively.
| Parameter | Calctan | CTRL |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (61 ratings) — better | — |
| Positive reviews | 28.6% of reviews | — |
| Number of ratings | 61 — better | — |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 193 MB |
| Age rating | 4+ | 4+ |
| Developer | Jorge Lozada | My CTRL |
In-app purchases
Calctan
No in-app purchases
CTRL
No in-app purchases









