# Function Calc vs SmartMark

The clearest difference is in-app purchases: Function Calc at none against SmartMark's 2. Function Calc also leads on ads (none vs shown) and ratings volume (3 vs 1). SmartMark's advantage is update cadence (every 9 days vs monthly). On price, rating, device support and iOS requirement there is nothing between them.

Both are free to download. SmartMark sells 2 in-app purchases, starting at $2.99 per month. Function Calc asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Function Calc against 5.0 for SmartMark. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Function Calc ships an update monthly, SmartMark every 9 days. The most recent releases landed on October 7, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Function Calc | SmartMark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/function-calc/id1188227053/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/smartmark-bookmark-manager/id6746692839/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 22 MB |
| Requires iOS | 18.6 | **18.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Hugh Pelham](https://appshunter.io/developer/1188227052) | [Shuhei Fujimi](https://appshunter.io/developer/1791454076) |

## What reviewers say

### Function Calc

[App page](https://appshunter.io/ios/app/function-calc/id1188227053)

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.

**Highlights:** Programmable custom functions, Graphing capabilities, Tape display with edit/undo, Unit conversions (120+), Dictate calculations, Export graphs (PDF, PNG)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### SmartMark

[App page](https://appshunter.io/ios/app/smartmark-bookmark-manager/id6746692839)

This app uses AI to automatically organize your saved links by generating titles, descriptions, and tags. Easily search and share collections of resources across devices with a clean, intuitive interface. It offers both light and dark modes for a personalized experience.

**Highlights:** AI-generated titles, descriptions, and tags, Tag-based organization and search, Shareable link collections, Cross-browser and cross-device saving, Dark and light mode support, Secure data management

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro plan - Monthly | $2.99 | per month |
| Pro plan - Yearly | $29.99 | per year |


## Frequently asked questions

### Is Function Calc free?

Function Calc is free to download, with no in-app purchases.

### Is SmartMark free?

SmartMark is free to download, with in-app purchases available.

### Which has better reviews, Function Calc or SmartMark?

Function Calc and SmartMark are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do Function Calc or SmartMark have ads?

SmartMark shows ads; Function Calc does not.

### Which is updated more often, Function Calc or SmartMark?

Function Calc ships an update monthly, and SmartMark every 9 days. Most recently, Function Calc was updated on October 7, 2026 and SmartMark on September 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*