# Summa – AI Calculator & Notes — Calculations you can adjust

> Calculations you can adjust (iPhone/iPad app by Oliver Dietmar Harald Sievers.)

- Source: https://appshunter.io/ios/app/summa-ai-calculator-and-notes/id6796963557 (this page in markdown: same URL + `.md`)
- Developer: [Oliver Dietmar Harald Sievers](https://appshunter.io/developer/6796963559)
- Category: Productivity, Finance
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 6 MB
- Languages: American English, French (France), German (Germany), Italian, European Spanish
- Released: 2026-09-04
- Data updated: 2026-10-09

## What is Summa?

You ask something, Summa AI writes the calculation for it. Whether the electric car pays off, how much paint three rooms need, what the travel budget leaves per day – line by line, with every assumption.

Change a value, and the result follows at once. Ask what decides the result, or have a single line changed.

You can also calculate yourself, as on paper: every line shows its result. Plus tables, sliders, percentages, units, currencies, deadlines and loans.

Your notes live in your iCloud and are the same on iPhone, iPad and Mac. No account, no ads, and Summa collects no data about you. Requests to Summa AI are processed by Apple, not by the developer.

FREE, PRO AND AI
• Free: up to three notes at a time, every calculation feature
• Summa Pro: unlimited notes, charts, PDF export – one purchase
• Summa AI: subscription with unlimited notes. Requires iOS 27 or macOS 27 with Apple Intelligence. Summa AI runs on Apple's Private Cloud Compute; how many requests are possible in which period is set by Apple for each Apple Account.

Terms of Use: https://osiev.de/en/summa/eula.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Summa AI | $1.99 | per month |
| Summa AI | $12.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Summa Pro | $8.99 | one-time |


## Is Summa safe?

Not enough ratings yet to assess Summa.

## Is Summa legit?

Summa – AI Calculator & Notes has limited verification signals. The AppsHunter Legitimacy Score for Summa is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.3 — 2026-09-29

New: Summa AI. You ask something, and Summa AI writes the calculation for it, with every assumption and sliders to adjust. Ask again and it explains what drives the result, or changes individual lines. Summa AI is a separate subscription and requires iOS 27 or macOS 27 with Apple Intelligence.

As you type, Summa suggests functions and your variables and fills in a function's arguments. Unknown names are created with one tap.

For loans there are interest cost and remaining balance, with the term in months or years. Summa also finds the point from which two cost curves cross.

### 1.2.1 — 2026-09-17

References to other notes now carry on: type a period after [[Travel budget]] and Summa shows that note's values with their results. Pick the one you want to keep calculating with — without opening the other note.

### 1.2 — 2026-09-11

A guided tutorial walks through the app step by step inside a real note, with its own lessons for the Pro features. It opens automatically after setup and can be explored freely at any time.

The calculation syntax understands variables inside an expression and continuation lines that build on the result of the line above.

Fixes: several smaller issues in charts, table entry, the tutorial and syncing have been resolved.

### 1.1 — 2026-09-06

Notes can now point to each other. Type [[ and Summa suggests matching titles; if the note does not exist yet, you create it in the same move. External links open in the browser, bold and italic take effect.

You drag blocks where they belong instead of moving them through the context menu. A new row or column goes in where the pin shows it. In the block menu, typing takes you straight to the block you want.

Plus many small improvements in the editor.

### 1.0 — 2026-09-05

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-09.*