# Exponential & Log Calculator vs ChatMate_

The clearest difference is price: Exponential & Log Calculator at Free against ChatMate_'s $9.99. Exponential & Log Calculator also leads on update cadence (every 3 weeks vs every 27 months). ChatMate_'s advantage is in-app purchases (none vs 8). On ads, device support and iOS requirement there is nothing between them.

Exponential & Log Calculator is free to download; ChatMate_ costs $9.99 up front. Exponential & Log Calculator sells 8 one-off in-app purchases. ChatMate_ asks for nothing beyond the download.

Exponential & Log Calculator ships an update every 3 weeks, ChatMate_ every 27 months. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Exponential & Log Calculator | ChatMate_ |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/chatmate/id6449012376/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 27 months |
| Monetization | — | Paid |
| Size | 183 MB | 3 MB |
| Requires iOS | **15.0** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [Beyond Confident Labs LLC](https://appshunter.io/developer/1079292911) |

## What reviewers say

### 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 |


### ChatMate_

[App page](https://appshunter.io/ios/app/chatmate/id6449012376)

Engage in intelligent conversations with an AI chatbot on your mobile device. Get assistance with homework, casual chats, and recommendations through a user-friendly interface. Experience the power of advanced AI anytime, anywhere.

**Highlights:** AI-powered chatbot, Homework assistance, Casual conversation, Personalized recommendations, User-friendly interface, Mobile accessibility

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Exponential & Log Calculator free?

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

### Is ChatMate_ free?

ChatMate_ costs $9.99, with no in-app purchases.

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

Neither Exponential & Log Calculator nor ChatMate_ shows ads.

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

Exponential & Log Calculator ships an update every 3 weeks, and ChatMate_ every 27 months. Most recently, Exponential & Log Calculator was updated on November 4, 2026 and ChatMate_ on November 3, 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.*