Calculator Book vs Calculator ⁺⁻
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator Book
Perform calculations with a clear view of all numbers involved. Easily see subtotals and modify previous entries for quick re-calculations. This tool simplifies complex math by displaying related figures simultaneously.
- Multi-line calculation display
- View total and related numbers
- Generate subtotals
- Edit previous numbers
- Easy re-calculation
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Don't limit yourself with one line for even simple calculations. Calculate as you do before, let calculator make your job easy: - See total and related numbers at the same time. - Get subtotals - Change numbers easily for re-calculation.
Calculator ⁺⁻
This app offers both basic and scientific calculation functions for iPhone and iPad. Users can customize its appearance, view calculation history, and perform complex equations with high accuracy. It also provides real-time calculation display and adjustable touch feedback.
- Basic and scientific calculator modes
- Over 30 scientific operations
- Calculation history view
- Real-time calculation display
- Customizable color themes
- Adjustable button touch sound/vibration
- High accuracy calculations (75+ significant digits)
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Calculator for iPad and iPhone is an easy to use that includes both a standard and scientific calculator. Calculator app allows you to: • Customize the look of the application by changing the color • Choose between a basic calculator or scientific calculator with more than 30 scientific operations • View history of your calculations on the History Tab • View an equation of your current calculations • Calculate with accuracy to more than 75 significant digits • Use parenthesis and nested parenthesis in your calculations • Change button touch sound with vibration • Displays real time calculation
Screenshots
Verdict
The clearest difference is ads: Calculator Book at none against Calculator ⁺⁻'s shown. Calculator Book also leads on review sentiment (76% vs 50%) and rating (5.0 vs 4.7). Calculator ⁺⁻'s advantage is ratings volume (42 vs 2). On price, update cadence, 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.
Calculator Book holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Calculator ⁺⁻ has 42 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 76% of Calculator Book's written reviews are positive against 50% of Calculator ⁺⁻'s.
Calculator Book ships an update every 19 months, Calculator ⁺⁻ every 15 months. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.
| Parameter | Calculator Book | Calculator ⁺⁻ |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.7 (42 ratings) |
| Positive reviews | 76.5% of reviews — better | 50.0% of reviews |
| Number of ratings | 2 | 42 — better |
| Update frequency | Every 19 months | Every 15 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 14 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | BIZCE TEKNOLOJI VE BILISIM A S | Matrix Software Co. |
Customer experience
Calculator Book
Calculator ⁺⁻
In-app purchases
Calculator Book
No in-app purchases
Calculator ⁺⁻
No in-app purchases
Questions
Is Calculator Book free?
Is Calculator ⁺⁻ free?
Which has better reviews, Calculator Book or Calculator ⁺⁻?
Do Calculator Book or Calculator ⁺⁻ have ads?
Which is updated more often, Calculator Book or Calculator ⁺⁻?
Other comparisons
