Essential Calculator vs TKB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Essential Calculator
Perform basic mathematical calculations with a clean, minimalist interface. Get instant results for your equations on your iPhone or iPod touch.
- Basic mathematical equations
- Instant results
- Minimalist interface
- iPhone and iPod touch support
Read full descriptionHide full description
Easily enter basic mathematical equations and instantly view the results on your iPhone or iPod touch with this simple, minimalist calculator app.
TKB
This application helps university students conveniently and quickly view their personal class schedules. It provides an easy way to manage academic timetables.
- View personal class schedules
- Convenient timetable access
- Quick schedule updates
- Student-focused design
Read full descriptionHide full description
Ứng dụng xem thời khóa biểu cho sinh viên đại học , hỗ trợ các bạn xem lịch học cá nhân của mình một cách tiện lợi và nhanh chóng
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Essential Calculator | TKB |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (8 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 75.0% of reviews | 76.9% of reviews — better |
| Number of ratings | 8 — better | 3 |
| Update frequency | Every 4 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.4 — better | 15.1 |
| Further details — not scored | ||
| Size | 2 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | CyberMoai | HUNONIC VIET NAM JOINT STOCK COMPANY |
Customer experience
Essential Calculator
TKB
In-app purchases
Essential Calculator
No in-app purchases
TKB
No in-app purchases
