When does the EV pay off?
Price, consumption and mileage sit one below the other; Summa runs both cars through the years and shows where the curves cross. Move the slider for the miles, and the answer moves with it.
Summa
Calculations you can adjust
Summa is a notes app that does the math. You jot down your travel budget, below it what’s already booked, and next to the following line you see what’s left per day. Change an amount and the rest falls back into place. No cells, no formula language.
For iPhone, iPad and Mac, free for up to three notes. Summa Pro is a one-time purchase.
How much is left per day?
Your travel budget at the top, flights, hotel and trips below with checkboxes. Only checked items count toward the total; Summa subtracts what’s booked and splits the rest across the days. Change the nights on the slider, and the amount is right again.
What does the loan really cost?
Summa suggests functions and your own values as you type. Price, down payment, interest and term are in the note, and loanpayment or loaninterest take their values from there.
How much paint do I need?
Call a value “ceiling height” and you can use it further down without typing it again. A slider makes a number something you can grab: drag the ceiling height, and wall area, litres and cans follow.
What’s my share of the utilities?
Longer breakdowns go into tables that calculate column by column. The column total is available to the rest of the note: the building’s utility costs become your share by floor area, and below it the amount left to pay.
How did I work that out back then?
Every calculation stays as a note with its working, in folders and searchable. Everything stays in your iCloud, with no account and no ads.
Get Summa for free
Free for up to three notes of your own. Add Summa Pro in the app.
Your data
Your notes in your iCloud
Summa stores your notes on the device and syncs them through your private iCloud, so they are the same on iPhone, iPad and Mac. What you change on the go is already there at your desk.
No account, no ads
Summa needs no account and collects no data about you. There are no ads, and the developer has no access to your notes.
Offline too
The app works offline. Calculating and taking notes need no network, and currencies use your own rates.
What else Summa does
A notes app, first of all
Headings, paragraphs, a photo in between, lists with boxes to tick off. Folders, search, pinning, lock with Face ID or Touch ID, and links between notes. If there’s nothing to calculate, it’s simply a note.
Calculating with depth
Percentages, units and currencies with your own rates. Dates and deadlines with a calendar, finance functions like compound interest, savings plan, loan payment, remaining balance, loan interest, savings goal and purchasing power.
Break-even points and cases
The year from which two cost curves cross, the point at which a threshold is reached. Case distinctions give a different result depending on a value, and ticked boxes count toward the total.
Charts
Charts are built from what’s already in the note. A table of utility bills becomes a bar chart, a savings plan a curve. Ten chart types, including several curves from one table. Charts are part of Pro.
Suggestions and templates
As you type, Summa suggests functions and your own values. Templates like checking utility bills, a travel budget, splitting a bill, a quote with tax, a savings goal and a loan help you get started, plus an interactive guide.
Passing things on
PDF and HTML, print-ready, with tables and charts (Pro). For other apps there’s Markdown, CSV and JSON.
Free and Pro
Free
Free
Up to three notes of your own, with all calculations, tables, sliders and templates.
Summa Pro
One-time purchase
Lifts the note limit and unlocks charts and export as PDF and HTML. One purchase for iPhone, iPad and Mac, with Family Sharing. No subscription.
Included without Pro as well: export as Markdown, CSV and JSON, plus a backup of all your notes. Your data can leave the app at any time.