# functionCalculator vs Exponential & Log Calculator

The clearest difference is in-app purchases: functionCalculator at none against Exponential & Log Calculator's 8. functionCalculator also leads on iOS requirement (10.3 vs 15.0). Exponential & Log Calculator's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 11 months). On price and device support there is nothing between them.

Both are free to download. Exponential & Log Calculator sells 8 one-off in-app purchases. functionCalculator asks for nothing beyond the download.

functionCalculator ships an update every 11 months, Exponential & Log Calculator every 3 weeks. The most recent releases landed on June 1, 2026 and August 20, 2026 respectively.

## The numbers

| Metric | functionCalculator | Exponential & Log Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/functioncalculator/id1275985289/reviews)** | — |
| Number of ratings | **6** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Every 3 weeks** |
| Monetization | Ad-supported | — |
| Size | 6 MB | 183 MB |
| Requires iOS | **10.3** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jirou Fukuda](https://appshunter.io/developer/689603483) | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) |

## What reviewers say

### functionCalculator

[App page](https://appshunter.io/ios/app/functioncalculator/id1275985289)

This app calculates the value of mathematical functions y = f(x) for various types of numbers, including irrational ones. It displays results as exact fractions with square roots and can convert them to decimals. The app also supports calculations involving two different input values, alpha and beta.

**Highlights:** Calculate function values for any number type, Display results as exact fractions, Convert results to decimal, Perform operations on two input values, Supports irrational numbers

**Features:** macOS Compatibility

**In-app purchases:** none


### Exponential & Log Calculator

[App page](https://appshunter.io/ios/app/exponential-and-log-calculator/id1662899878)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| +30 User Tokens | $0.29 | one-time |
| +1 Convenience Token / 6h, max. +2 | $0.59 | one-time |
| +2 Convenience Tokens / 6h, max. +4 | $0.99 | one-time |
| +150 User Tokens | $0.99 | one-time |
| +300 User Tokens | $1.49 | one-time |
| +4 Convenience Tokens / 6h, max. +8 | $1.59 | one-time |
| Remove Ads | $1.99 | one-time |
| Lifetime Access | $1.99 | one-time |


## Frequently asked questions

### Is functionCalculator free?

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

### Is Exponential & Log Calculator free?

Exponential & Log Calculator is free to download, with in-app purchases available.

### Do functionCalculator or Exponential & Log Calculator have ads?

functionCalculator shows ads; Exponential & Log Calculator does not.

### Which is updated more often, functionCalculator or Exponential & Log Calculator?

functionCalculator ships an update every 11 months, and Exponential & Log Calculator every 3 weeks. Most recently, functionCalculator was updated on June 1, 2026 and Exponential & Log Calculator on August 20, 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.*