# Essential Calculator vs TKB

The clearest difference is rating: TKB at 5.0 against Essential Calculator's 4.0. TKB also leads on update cadence (every 9 days vs every 4 months). Essential Calculator's advantage is iOS requirement (12.4 vs 15.1). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TKB holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 8 and 3 respectively. Written reviews point the same way: 75% of Essential Calculator's written reviews are positive against 77% of TKB's.

Essential Calculator ships an update every 4 months, TKB every 9 days. The most recent releases landed on June 8, 2026 and August 5, 2026 respectively.

## The numbers

| Metric | Essential Calculator | TKB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (8 ratings)](https://appshunter.io/ios/app/essential-calculator/id1151178028/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/tkb/id1435487616/reviews)** |
| Number of ratings | **8** | 3 |
| Positive reviews | 75.0% of reviews | **76.9% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | Free | Free |
| Size | 2 MB | 32 MB |
| Requires iOS | **12.4** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CyberMoai](https://appshunter.io/developer/553890347) | [HUNONIC VIET NAM JOINT STOCK COMPANY](https://appshunter.io/developer/1422372871) |

## What reviewers say

### Essential Calculator

[App page](https://appshunter.io/ios/app/essential-calculator/id1151178028)

Perform basic mathematical calculations with a clean, minimalist interface. Get instant results for your equations on your iPhone or iPod touch.

**Highlights:** Basic mathematical equations, Instant results, Minimalist interface, iPhone and iPod touch support

**In-app purchases:** none


### TKB

[App page](https://appshunter.io/ios/app/tkb/id1435487616)

This application helps university students conveniently and quickly view their personal class schedules. It provides an easy way to manage academic timetables.

**Highlights:** View personal class schedules, Convenient timetable access, Quick schedule updates, Student-focused design

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Essential Calculator free?

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

### Is TKB free?

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

### Which has better reviews, Essential Calculator or TKB?

TKB is rated higher. Essential Calculator averages 4.0 out of 5 from 8 ratings, while TKB averages 5.0 from 3 ratings.

### Do Essential Calculator or TKB have ads?

Neither Essential Calculator nor TKB shows ads.

### Which is updated more often, Essential Calculator or TKB?

Essential Calculator ships an update every 4 months, and TKB every 9 days. Most recently, Essential Calculator was updated on June 8, 2026 and TKB on August 5, 2026.

---

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