Janus Calculator vs progr dashboard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Janus Calculator
This app offers a unique dual-calculator interface, supporting both standard and Reverse Polish Notation. It features programmable functions, extensive scientific and financial tools, and includes physical constants and an advanced option calculator.
- Dual calculator interface (Standard and RPN)
- Programmable functions
- Finance and scientific functions
- Physical constants
- Black-Scholes option calculator
- Implied value calculation
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Two-sided calculator. Side A uses Standard Notation, Side B uses Reverse Polish Notation. Both calculators are programmable, include various finance and scientific functions, and the values of 45 physical constants. Also includes a Black-Scholes option calculator, including calculation of implied values for each of the inputs.
progr dashboard
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progr tells you how much of the a year, quarter, month, week and day have passed so that you can hold yourself accountable to your goals. Add the widget to your Home Screen or Lock Screen to see the % update every minute.
Screenshots
Verdict
The clearest difference is update cadence: progr dashboard at every 2 months against Janus Calculator's every 45 months. progr dashboard also leads on iOS requirement (17.0 vs 26.2). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Janus Calculator ships an update every 45 months, progr dashboard every 2 months. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.
| Parameter | Janus Calculator | progr dashboard |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (1 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 45 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 26.2 | 17.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Geoffrey Domm | Dasmer Singh |
In-app purchases
Janus Calculator
No in-app purchases
progr dashboard
No in-app purchases
Questions
Is Janus Calculator free?
Is progr dashboard free?
Do Janus Calculator or progr dashboard have ads?
Which is updated more often, Janus Calculator or progr dashboard?
Other comparisons
