CalculateRetro vs tripleCalculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CalculateRetro
This app allows users to track all their calculations with features like a backspace key, history printing, and PDF export. It supports Apple Watch, dark mode, and customization of display and fonts. Calculations can be shared via email or saved for later access.
- Apple Watch calculator
- Today View Extension
- Printable/emailable calculation history
- Backspace key for corrections
- Customizable display and fonts
- Dark mode support
- Copy/paste functionality
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Featured in What´s Hot on iTunes The BEST Calculator! App for iPad, iPhone, iTouch and Apple Watch. Ever lost your train of thought half way through a calculation and thought how handy it would be to have a print out or e-mail of your work? Features: - Print out the calculation history or send by PDF. - Correct with a backspace key if you enter a wrong digit without having to redo all. - Email, PDF or Print the calculation history. - PDF the Tape and access previous in the Documents Folder. - Exchange Documents in iTunes or open in iBooks, Email, etc. - Rename and share PDF documents. - Copy and Paste numbers to other Apps, by tapping on the display. - Change number display to Fixed, Scientific, etc., by tapping on the display. - Customize the background, fixed digits, fonts, colors and sizes. - Customize the Tape font, size and color. - An audible sound confirms if you have pressed a button, which can be easily disabled by touching the speaker. - Show calculations on an Apple TV or an external monitor with a cable. - Previous calculation is repeated when the equal sign is pressed. - Grand Total calculated. - Numbers in Memory may be logged to the Tape. - A visible and audible error when trying to divide by zero or take the square root of a negative number. - Numbers are shown in local format, depending on your Region Formats, i.e. comma used in Europe.
tripleCalculator
This app consolidates three calculators into a single, convenient tool. Easily switch between calculators with a single touch and utilize calculation results across them. It features formula display, equation editing, a function calculator mode, and a history swipe function for easy recall.
- Three calculators in one
- Easy calculator switching
- Calculation results transferable
- Formula display and editing
- Function calculator mode (fx)
- History swipe function
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Three of the calculator is the emergence of useful calculator summarized in one. Touched calculator quickly appeared lightly input! Only also touch switching of the calculator! You do not need something memory function so the calculation results of each of the calculator can be used in the rest of the calculator! Switching at the touch of a button just to the calculator when it is in the way is using! Formula is displayed! Also think remains of editing of the equation! It can be switched to function calculator in the "fx" key! History function implementation. Rest assured return to the past of the formula or value by simply swiping the screen!
Screenshots
Verdict
The clearest difference is price: tripleCalculator at Free against CalculateRetro's $1.99. tripleCalculator also leads on review sentiment (100% vs 82%) and iOS requirement (10.0 vs 26.0). CalculateRetro's advantage is ads (none vs shown) and ratings volume (15 vs 5). On rating, 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
tripleCalculator is free to download; CalculateRetro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.5 for CalculateRetro against 4.6 for tripleCalculator. Both are backed by a comparable volume of ratings — 15 and 5 respectively. Written reviews are what separate them: 82% of CalculateRetro's written reviews are positive against 100% of tripleCalculator's.
CalculateRetro ships an update every 3 months, tripleCalculator every 4 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | CalculateRetro | tripleCalculator |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.5 (15 ratings) | 4.6 (5 ratings) — better |
| Positive reviews | 82.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 15 — better | 5 |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Hannes Sverrisson | Jirou Fukuda |
Customer experience
CalculateRetro
tripleCalculator
In-app purchases
CalculateRetro
No in-app purchases
tripleCalculator
No in-app purchases
