# Derivative vs Exponential & Log Calculator

The clearest difference is in-app purchases: Derivative at none against Exponential & Log Calculator's 8. Exponential & Log Calculator's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

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

Derivative ships an update monthly, Exponential & Log Calculator every 3 weeks. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Derivative | Exponential & Log Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 37 MB | 183 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) |

## What reviewers say

### Derivative

[App page](https://appshunter.io/ios/app/derivative-calculus/id1618969952)

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

**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 Derivative free?

Derivative 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 Derivative or Exponential & Log Calculator have ads?

Derivative shows ads; Exponential & Log Calculator does not.

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

Derivative ships an update monthly, and Exponential & Log Calculator every 3 weeks. Most recently, Derivative was updated on October 12, 2026 and Exponential & Log Calculator on October 24, 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.*