Function Calc vs ETasks
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Function Calc
This app offers a powerful, programmable scientific calculator with graphing capabilities. It allows users to create custom functions, store equations, and perform complex calculations with ease. The interface features a visible tape display and supports dictation for statistical analysis.
- Programmable custom functions
- Graphing capabilities
- Tape display with edit/undo
- Unit conversions (120+)
- Dictate calculations
- Export graphs (PDF, PNG)
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A full-function, programmable, graphing scientific calculator designed to be very quick and easy to use, but with the added power of customisation. Tape display is visible while you type, and a swipe away from full screen view. Select and directly input any number from tape, undo or edit calculations. Easily create and use custom functions, store equations and useful numbers, use complex functions with multiple variables - fully programmable. Plot functions on a zoomable graph, export a high-resolution pdf copy. Dictate calculations and numbers for statistical analysis, with instant results. Completely free. • no adverts, no in-app purchases. • full set of scientific functions, unlimited nested brackets. • swipe to undo, step by step. • easily edit calculations and re-calculate. • optionally enter and edit calculations in standard maths format, rather than calculator order. • visible memory store. • tape output shows all calculations – swipe for full screen. • never type the same number twice – direct input from tape. • instantly convert between more than 120 different units. • zoomable text for easy reading and editing. • fully editable useful numbers page – store constants, conversion factors, commonly used numbers, tappable URLs or email addresses, or any text. • create, store and use functions for unit conversions or calculations, as simple as copy and paste. • dictate calculations, or lists of numbers for statistical analysis, get instant results. • create, edit and use complex functions with up to ten inputs or outputs – solve quadratic and cubic equations, calculate mortgage payments, compound interest, body mass index, triangles, the day of the week for any date, sunrise and sunset times and direction for any date and place, statistics (including normal, Student's T, Chi Square and F cumulative probability functions) and more – create or keep exactly what is useful, edit or delete what isn’t. 50 functions included. • fully zoomable graphing capability, plot one or two functions on a graph. Export PNG or high-resolution large pdf copies. • ideal for complex or repetitive tasks – custom functions reduce errors. • full help included.
ETasks
This app helps you quickly capture tasks, organize them into clear lists, and set persistent alarms to ensure nothing is missed. It offers seamless integration with Google Tasks and Apple Reminders, with options for offline work and data backup.
- Fast task capture
- Persistent task alarms
- Google Tasks two-way sync
- Import from Apple Reminders
- Calendar views (month, week, day)
- Drag and drop rescheduling
- Customizable lists and widgets
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Capture tasks quickly, keep every list in one clear view, and set persistent alarms for what matters. ETasks is a focused to-do list and planner built for fast capture, confident scheduling, and fewer missed tasks. Connect your account for two-way sync with Google Tasks (They appear in your Google Calendar and Gmail), or start without an account and keep your lists on your device. You can import from Apple Reminders too. SEE THE WHOLE PLAN • Bring all your lists into one view • Switch between month, week, day, and agenda calendars • Drag and drop tasks to reschedule them • Search titles, subtasks, and notes • Mark favorites and set priorities USE THE RIGHT ALERT • Set persistent task alarms on supported devices and system versions • Add time-based and location reminders • Create repeating tasks and deadline alerts • Snooze an alarm when you need more time CAPTURE IN SECONDS • Type or dictate a natural sentence • Let on-device Smart Capture suggest a title, date, time, and notes • Review every suggestion before saving • Add subtasks, notes, photos, files, and email references MAKE IT YOURS • Customize list colors, layouts, and behavior • Add task and calendar widgets • View and complete tasks from your watch • Share cloud lists with other ETasks users • Back up and restore your data • Work offline and sync changes after you reconnect Some features require permission, a supported device or system version, an account, or an internet connection. Shared ETasks lists use a separate cloud service and are not part of connected-account sync. ETasks is independently developed and is not affiliated with, sponsored by, or endorsed by Google LLC. Google Tasks is a trademark of Google LLC and is named here only to identify a supported sync service. Questions or feedback: support@etasks.app
Screenshots
Verdict
The clearest difference is update cadence: ETasks at every 3 days against Function Calc's monthly. ETasks also leads on review sentiment (100% vs 80%) and device support (3 vs 1). On price, rating, ratings volume and ads 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.
On the App Store both sit at effectively the same score — 5.0 for Function Calc against 5.0 for ETasks. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews are what separate them: 80% of Function Calc's written reviews are positive against 100% of ETasks's.
Function Calc ships an update monthly, ETasks every 3 days. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.
| Parameter | Function Calc | ETasks |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (3 ratings) |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 | 3 |
| Update frequency | Monthly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 18.6 | 18.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Hugh Pelham | Ertem Esiner |
Customer experience
Function Calc
ETasks
In-app purchases
Function Calc
No in-app purchases
ETasks
No in-app purchases









