CalcTrack vs calculator DUO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CalcTrack
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After the changes are finalized (tapping equal button), appears at the top of the screen. You can use these results by tapping on them. Quick and Accurate Calculations History Tracking: See and recall your previous calculations User-Friendly Interface Save Time and Stay Organized
calculator DUO
This utility app offers a modern calculator with a visual history feature, eliminating the need to memorize previous calculations. It also includes a comprehensive unit converter and a tip calculator that bases tips on pre-tax amounts.
- Visual history calculator (RESULT SHELF™)
- Unit converter
- Tip calculator (pre-tax)
- Distraction-free design
- Precise and efficient
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A scientific calculator with history that fits the way you hold your iPhone. Save an answer, use it again in a tap, and keep everyday math moving on iPhone and iPad. WITHIN THUMB REACH Move and resize the left- or right-hand keypad to suit your grip. KEEP THE ANSWERS YOU NEED Save useful results on a visual shelf. Tap to reuse them, recall your last answer, or search your calculation history and mark favorites. CORRECT INPUT WITH CONFIDENCE Swipe to delete a digit or function. The deleted content stays visible until your next input; tap the return button to undo the deletion. FROM EVERYDAY TO SCIENTIFIC Use arithmetic, percentages, powers, roots, logarithms and trigonometric functions. Long-press a result for a large display, with adjustable text, color, font and size. MAKE IT YOURS Five themes, optional digit grouping and an interface in 50 languages. No account is required. Expressions, saved results and calculation history are stored on your device. The free app may show banner ads. Remove Ads is an optional one-time purchase, with purchase restoration through the same Apple Account.
Screenshots
Verdict
The clearest difference is in-app purchases: CalcTrack at none against calculator DUO's 1. CalcTrack also leads on ads (none vs shown) and iOS requirement (13.0 vs 16.5). On price, update cadence 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 DUO sells 1 one-off in-app purchase. CalcTrack asks for nothing beyond the download.
CalcTrack ships an update every 9 days, calculator DUO every 2 weeks. The most recent releases landed on September 18, 2026 and September 23, 2026 respectively.
| Parameter | CalcTrack | calculator DUO |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 9 days — better | Every 2 weeks |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.5 |
| Further details — not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Barkin Sungu | Wenbin lei |
In-app purchases
CalcTrack
No in-app purchases
calculator DUO
- Remove Ads$7.99
Questions
Is CalcTrack free?
Is calculator DUO free?
Do CalcTrack or calculator DUO have ads?
Which is updated more often, CalcTrack or calculator DUO?
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