Citizen Calculator ⁺ vs Calo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Citizen Calculator ⁺
This app emulates a CITIZEN calculator, perfect for everyday and business math. It handles basic operations, corrections, percentages, constants, and large numbers, displaying them in scientific notation when needed.
- Basic math operations
- Check and correct functionality
- Auto replay
- Percent calculation
- Constants calculation
- Number formatting
- Grand total (GT)
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This app is a fully working emulator of CITIZEN calculator. This calculator is ideal for general and business purposes. Calculator Features:- * Basic math operations (addition, subtraction, multiplication, division) * Check and correct * Auto replay * Percent calculation * Constants calculation * Number formatting (Decimal and digit-grouping) as per device locale * Grand total (GT) You can use this calculator to work with very large numbers. Numbers having more than 12 digits are shown in scientific notation. Leave a review if you like this simple and easy to use calculator app. For any suggestions/queries/problems in the app? Write to us at rakeshapp4@gmail.com
Calo
This app offers a high-precision calculator with scientific functions and unit conversion. It allows users to save and search calculation history, add notes, and export results. Customize themes and sync across devices for a personalized experience.
- High-precision calculation engine
- Scientific mode with advanced functions
- Unit converter
- Searchable calculation history
- Save and reuse expressions
- Export results (CSV, image)
- Home Screen and Lock Screen widgets
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Calo is a free, ad-free calculator for everyday math and deeper exploration. A clean keypad keeps quick calculations simple; switch to scientific mode when you need more. Calculate with confidence • A native high-precision engine keeps up to 40 significant digits in results. • See results as you type. Move the cursor to edit or paste an expression, and use a hardware keyboard on iPad. • Explore powers, roots, logarithms, trigonometry, factorials and more. Switch between degrees and radians. • Tap a result to cycle through rounded, full-precision, fraction (when available) and scientific formats. Use memory keys for multi-step work. Keep your work close • Search your calculation history, add notes, reuse an earlier expression, or export results as CSV or a receipt-style image. • Save expressions you use often and insert them with a tap. • See recent results in Home Screen and Lock Screen widgets. Open Calo from Control Center, or calculate and retrieve your latest result with Siri and Shortcuts. Make it yours with light and dark themes, accent colors, sounds, Chinese voice pronunciation, adjustable decimal places and optional iCloud sync.
Screenshots
Verdict
The clearest difference is rating: Calo at 4.7 against Citizen Calculator ⁺'s 4.2. Calo also leads on ads (none vs shown) and update cadence (every 5 days vs every 12 months). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Calo holds the better App Store score, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 5 and 22 respectively.
Citizen Calculator ⁺ ships an update every 12 months, Calo every 5 days. The most recent releases landed on November 3, 2026 and November 12, 2026 respectively.
| Parameter | Citizen Calculator ⁺ | Calo |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) | 4.7 (22 ratings) — better |
| Positive reviews | — | 95.0% of reviews |
| Number of ratings | 5 | 22 — better |
| Update frequency | Every 12 months | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 6 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Rakesh Bhadani | Space-Time Transformation Technology Co., Ltd. |
Customer experience
Citizen Calculator ⁺
Calo
In-app purchases
Citizen Calculator ⁺
No in-app purchases
Calo
No in-app purchases
Questions
Is Citizen Calculator ⁺ free?
Is Calo free?
Which has better reviews, Citizen Calculator ⁺ or Calo?
Do Citizen Calculator ⁺ or Calo have ads?
Which is updated more often, Citizen Calculator ⁺ or Calo?
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