O`haitai vs BasicCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
O`haitai
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HBY Camera can observe the situation in the ear by connecting the WiFi ear glasses, and make the ear cutting more safe and convenient. Hi-tai realizes the functions of photography, video recording, screen rotation and video playback.
BasicCalc
This app offers both basic and advanced scientific calculation modes with a clean interface and large buttons. It features a persistent history of your last 30 operations and works offline on your iPhone or iPad.
- Basic and Scientific calculation modes
- Large, easy-to-tap buttons
- Persistent calculation history (last 30 ops)
- Works offline
- Dark theme option
- Supports iPhone and iPad
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*** #1 App Calculator in 10 countries! *** No ads or Purchases, just Math! *** BIG Buttons! *** Basic and Simple! ----------------------------------------------------- BasicCalc is the calculator that adapts to you. Start in Basic mode for everyday math, then switch to Scientific mode when you need more power — all in one tap. BASIC MODE • Clean, distraction-free calculator for daily use • Large buttons designed for easy tapping • Left-to-right calculation — what you see is what you get SCIENTIFIC MODE • Full scientific calculator with proper operator precedence • Trigonometric functions: sin, cos, tan, asin, acos, atan • Logarithms: ln, log • Powers and roots: x², x³, √, ∛, ^ • Constants: π, e, random number generator • Parentheses for complex expressions • Degree/Radian toggle • 2nd button doubles available functions SMART FEATURES • Persistent calculation history — review your last 30 operations • Works on both iPhone and iPad • Dark theme — easy on your eyes • No account needed, no internet required Download BasicCalc — the only calculator you need.
Screenshots
Verdict
The clearest difference is update cadence: O`haitai at every 5 weeks against BasicCalc's every 17 months. O`haitai also leads on iOS requirement (8.0 vs 15.6). On price, ads, in-app purchases and device support 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.
O`haitai ships an update every 5 weeks, BasicCalc every 17 months. The most recent releases landed on October 11, 2026 and October 16, 2026 respectively.
| Parameter | O`haitai | BasicCalc |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 weeks — better | Every 17 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 16 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | 志强 童 | Rodrigo Belloso |
In-app purchases
O`haitai
No in-app purchases
BasicCalc
No in-app purchases
