PiSquared vs Marco
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PiSquared
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PiSquared is an RPN-only calculator for the Apple Watch. It supports a wide variety of mathematical and scientific functions as well as binary operations for programmers. Integer, floating point (real) and complex numbers are equally supported. These functions are available: - calculation of the number of combinations or permutations for integer numbers - factorials for integer numbers or Gamma function for positive non-integer numbers - trigonometric, logarithmic, exponential and hyperbolic functions for floating point and complex numbers - date and time conversions - logical operations for binary, octal or hexadecimal numbers - cartesian to polar coordinate conversions and vice versa (floating point numbers) - degrees to radians and vice versa conversions (floating point numbers) - absolute, integer and fractional value of a number (floating point and partially complex numbers) - rounding of a real number (standard rounding and rounding up or down) - random number generator and some more. The calculator has a stack depth of ten and features ten additional storage registers. All storage registers and the stack can be inspected. The stack itself can be manipulated by moving it up or down or by swapping its two topmost elements.
Marco
Consolidate all your email accounts, including Gmail, iCloud, and Outlook, into a single, unified inbox. Enjoy offline access, lightning-fast performance, and customizable views to organize your communications efficiently. This modern app offers a private and streamlined email management experience.
- Unified inbox for all email accounts
- Offline email access
- Customizable email views
- Native iOS and macOS experience
- Fast performance
- Privacy-focused
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All your email accounts, one fast inbox. Marco is a fast, privacy-first email app that unifies Gmail, iCloud, Outlook, Yahoo, and IMAP accounts into one clean inbox. Works offline, syncs instantly, and runs natively on iPhone, iPad, and Mac. Key features: • Unified inbox for all accounts – Gmail, iCloud, Outlook, Yahoo, Exchange, and any IMAP provider in one place. • Native Apple experience – Built for iPhone, iPad, and Mac with full keyboard shortcuts and system integration. • Works offline – Read, search, and compose without a connection. Everything syncs when you're back online. • Privacy-first email – No tracking, no data selling, no ads. Your emails stay yours. • Instant speed – Opens, searches, and sends faster than default mail apps. • Smart email views – Filter by account, label, or sender. Zero inbox clutter. Tired of slow, bloated email clients? Marco is the lightweight, private alternative to Spark, Superhuman, and Apple Mail — with multi-account support, offline access, and no subscription required.
Screenshots
Verdict
The clearest difference is price: Marco at Free against PiSquared's $1.99. Marco also leads on update cadence (every 4 days vs every 23 months). PiSquared's advantage is chart position (#183 vs unranked) and iOS requirement (13.0 vs 17.0). On 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
Marco is free to download; PiSquared costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
PiSquared ships an update every 23 months, Marco every 4 days. Both last shipped on October 30, 2026.
| Parameter | PiSquared | Marco |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | — | 3.7 (3 ratings) — better |
| Positive reviews | — | 12.5% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 23 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Best chart rank | #183 — better | — |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Mac |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 114 MB |
| Age rating | 4+ | 4+ |
| Developer | Hartwig Wiesmann | Marco Technology Inc. |
In-app purchases
PiSquared
No in-app purchases
Marco
No in-app purchases









