Comparison

ThemeCalc vs CalcLog

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

ThemeCalc

Enhance your math experience with a powerful scientific calculator featuring over 40 aesthetic themes. It offers a professional engine for various math levels, a programmer mode, and a history tape for easy recall. Customize your calculator's look and feel while tackling complex problems.

Highlights
  • Professional scientific calculator engine
  • 40+ aesthetic themes
  • Programmer mode (HEX, DEC, OCT, BIN)
  • History tape for past calculations
  • Haptic feedback
  • Customizable layouts
Features
Read full description

Calculate fractions, work through scientific math and find polynomial roots in a calculator you can make your own. Start with free calculator tools and included themes. No banner ads or automatic ad interruptions while you calculate. MATH THAT'S EASY TO READ โ€ข Enter fractions, roots and powers in textbook-style notation. โ€ข Switch between exact fractions and decimal results. โ€ข Use trigonometry, degree and radian modes, logarithms and factorials. โ€ข Handle everyday arithmetic and percentages with a clear basic keypad. A CALCULATOR IN YOUR STYLE Preview themes before choosing. Explore metallic keys, paper textures and luminous designs. Browse a carousel on iPhone or a spacious theme grid on iPad. Additional themes are available through optional purchases. POLYNOMIAL EQUATIONS Find polynomial roots in Math Lab, review the results and reuse a value in your next calculation. PROGRAMMER TOOLS Work in HEX, DEC, OCT and BIN. Use bitwise operations, shifts, rotations and configurable bit widths, and inspect individual bits. PICK UP WHERE YOU LEFT OFF Revisit calculation history, copy results and continue from a previous calculation. Set sound and haptic feedback to suit the way you work. ROOM TO WORK ON iPAD A dedicated workspace brings sidebar navigation, recent calculations and multi-column tools. Layouts adapt to portrait, landscape and smaller windows. OPTIONAL THEMES AND PURCHASES Calculator tools and included free themes work without a purchase. Premium subscriptions unlock all themes while active. Lifetime theme access is also available as a one-time purchase. Optional rewarded ads let you try eligible themes in the Gallery. Availability and current prices are shown in the app. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Payment is charged to your Apple ID account. Manage or cancel subscriptions in your App Store account settings. Support: https://toankhontech.com/en/contact Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

CalcLog

Features
Read full description

CalcLog - A visual calculator that records every step as a receipt tape. [Key Features] - Receipt Tape: Every equation and result stacks vertically for easy review. - Notes: Label any item so you remember what each number was for. - Strikethrough: Swipe to exclude items from the total. - Session Archive: Save calculation sets and reopen them anytime. - Scientific Mode: sin, cos, tan, ln, log and more scientific functions. - Live Grand Total: Running total always visible at the top. - Result Recall: Tap any previous result to load it into your input. - Dark Mode support. - 16 languages supported. - Privacy First: All data stays on your device. No ads, no tracking. [Perfect For] - Grocery shopping price tracking - Comparing quotes in meetings - Simple daily expense logging - Keeping records of engineering calculations Contact: helpdesk@redcandle.co.kr

Screenshots

ThemeCalc4 screens
CalcLog4 screens

Verdict

The call

The clearest difference is in-app purchases: CalcLog at none against ThemeCalc's 10. CalcLog also leads on ads (none vs shown) and iOS requirement (15.0 vs 18.0). ThemeCalc's advantage is update cadence (every 6 days vs every 3 weeks). On price and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. ThemeCalc sells 10 in-app purchases, starting at $0.99 per month. CalcLog asks for nothing beyond the download.

UpkeepUpdate frequency

ThemeCalc ships an update every 6 days, CalcLog every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard4 real differences ยท 4 level
ThemeCalc versus CalcLog: the parameters behind the verdict, then further details
ParameterThemeCalcCalcLog
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 6 days โ€” betterEvery 3 weeks
AdsYesNo โ€” better
In-app purchasesYesNo โ€” better
MonetizationFree with in-app purchasesโ€”
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS18.015.0 โ€” better
Further details โ€” not scored
Size42 MB50 MB
Age rating4+4+
DeveloperNguyen Toan LeRedCandle Co.,Ltd.

In-app purchases

10 purchases

ThemeCalc

Subscriptions2
  • Premium Monthly7 Days trial$0.991 Month
  • Premium Yearly7 Days trial$5.991 Year
One-time8
  • Solar Flare$1.99
  • Valhalla Viking$1.99
  • Sakura Zen Garden$1.99
Show 5 more
  • Atlantis Deep$1.99
  • Quantum Processor$1.99
  • Casio fx-5800P Theme$1.99
  • Casio fx-9860GII Theme$1.99
  • Unlock Everything$9.99
None

CalcLog

No in-app purchases

Questions

Is ThemeCalc free?
ThemeCalc is free to download, with in-app purchases available.
Is CalcLog free?
CalcLog is free to download, with no in-app purchases.
Do ThemeCalc or CalcLog have ads?
ThemeCalc shows ads; CalcLog does not.
Which is updated more often, ThemeCalc or CalcLog?
ThemeCalc ships an update every 6 days, and CalcLog every 3 weeks. Most recently, ThemeCalc was updated on October 30, 2026 and CalcLog on October 31, 2026.

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