Comparison

TinyWatchCalc vs Calccis

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

A RPN calculator

About

TinyWatchCalc

Features

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A simple calculator for the Apple Watch. Supports addition, subtraction, multiplication and division.

About

Calccis

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Calccis is a reverse polish notation (RPN) calculator. It supports basic arithmetic, trigonometrical, logarithm and exponent calculations for real, fractional, and complex numbers. Degrees and radians can be used for trigonometrical functions. You can perform matrix calculations, too. There is an undo stack, which supports undoing and redoing the 100 latest operations. Calccis does not copy or mimic any existing physical calculators. However, the operation of the stack has been influenced by how the stack works in the 1990s Hewlett-Packard HP-48 family of calculators.

Screenshots

TinyWatchCalc1 screens

Calccis3 screens

Verdict

The call

The clearest difference is update cadence: Calccis at every 3 weeks against TinyWatchCalc's every 16 months. TinyWatchCalc's advantage is iOS requirement (12.0 vs 17.6). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

TinyWatchCalc ships an update every 16 months, Calccis every 3 weeks. The most recent releases landed on September 28, 2026 and September 12, 2026 respectively.

Scorecard2 real differences · 4 level

TinyWatchCalc versus Calccis: the parameters behind the verdict, then further details
Parameter	TinyWatchCalc	Calccis
Price	Free	Free
Update frequency	Every 16 months	Every 3 weeks — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod, Apple Watch — better	iPhone, iPad
Requires iOS	12.0 — better	17.6
Further details — not scored
Size	9 MB	1 MB
Age rating	4+	4+
Developer	Peter Entwistle	Jukka Aittola

In-app purchases

None

TinyWatchCalc

No in-app purchases

None

Calccis

No in-app purchases

Questions

Is TinyWatchCalc free?

TinyWatchCalc is free to download, with no in-app purchases.

Is Calccis free?

Calccis is free to download, with no in-app purchases.

Do TinyWatchCalc or Calccis have ads?

Neither TinyWatchCalc nor Calccis shows ads.

Which is updated more often, TinyWatchCalc or Calccis?

TinyWatchCalc ships an update every 16 months, and Calccis every 3 weeks. Most recently, TinyWatchCalc was updated on September 28, 2026 and Calccis on September 12, 2026.