Calculator Book vs Calculator Plus Basic & PEMDAS
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 Plus Basic & PEMDAS
This app offers a customizable calculator experience with a clean interface and advanced features like PEMDAS mode and calculation history. Personalize its appearance with numerous themes and button styles to suit your preferences.
- PEMDAS order of operations mode
- Over 50 customizable color themes
- Full calculation history
- Adjustable decimal precision
- Copy and paste functionality
- Sales tax calculations
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Combining powerful calculations with fully customisable design — so your calculator looks and works just how you want it to! Built For Speed & Simplicity: Clean, simple, intuitive layout Instant, responsive calculations Large easy to read buttons and numbers Switch between standard and order of operations (PEMDAS) modes effortlessly Make It Yours: Over 50 color themes available, with more added regularly High-contrast colour themes for visually impaired users Favorite your top themes for quick switching Request your very own color theme Choose round or square buttons Smart Features That Matter: Full calculation history with US format date & timestamps - store up to a year of results Adjustable decimal precision Copy & paste from the display or calculation history Retro LCD or modern display Customisable haptic feedback intensity Sound effects on or off Optimized layouts for both iPhone and iPad Sales Tax calculations Currency conversions Speaking calculations Tips calculator Unit price calculator Discount percentage calculator Premium: Upgrade to Premium with a one-time purchase and: Unlock all Premium color themes and features forever on your iPhone and iPad No subscription Reasons to Love it: No clutter, no confusion — just an intuitive, great looking calculator Personalisation without limits
Screenshots
Verdict
The clearest difference is in-app purchases: Calculator Book at none against Calculator Plus Basic & PEMDAS's 1. Calculator Book also leads on ads (none vs shown) and iOS requirement (9.0 vs 17.0). Calculator Plus Basic & PEMDAS's advantage is update cadence (weekly vs every 19 months) and review sentiment (100% vs 76%). On price, rating, ratings volume 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. Calculator Plus Basic & PEMDAS sells 1 one-off in-app purchase. Calculator Book asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Calculator Book against 5.0 for Calculator Plus Basic & PEMDAS. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews are what separate them: 76% of Calculator Book's written reviews are positive against 100% of Calculator Plus Basic & PEMDAS's.
Calculator Book ships an update every 19 months, Calculator Plus Basic & PEMDAS weekly. The most recent releases landed on September 24, 2026 and October 18, 2026 respectively.
| Parameter | Calculator Book | Calculator Plus Basic & PEMDAS |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (5 ratings) |
| Positive reviews | 76.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 5 — better |
| Update frequency | Every 19 months | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 14 MB | 91 MB |
| Age rating | 4+ | 4+ |
| Developer | BIZCE TEKNOLOJI VE BILISIM A S | Paul Flowers |
Customer experience
Calculator Book
Calculator Plus Basic & PEMDAS
In-app purchases
Calculator Book
No in-app purchases
Calculator Plus Basic & PEMDAS
- More Beans Calculator$4.99
Questions
Is Calculator Book free?
Is Calculator Plus Basic & PEMDAS free?
Which has better reviews, Calculator Book or Calculator Plus Basic & PEMDAS?
Do Calculator Book or Calculator Plus Basic & PEMDAS have ads?
Which is updated more often, Calculator Book or Calculator Plus Basic & PEMDAS?
Other comparisons
