# T vs Calkillator

The clearest difference is update cadence: T at weekly against Calkillator's monthly. T also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. T sells 1 one-off in-app purchase and Calkillator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

T ships an update weekly, Calkillator monthly. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | T | Calkillator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/t-calc-lite/id1630026837/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free | — |
| Size | 4 MB | 25 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hiroyuki Ueda](https://appshunter.io/developer/473279916) | [221B STUDIO](https://appshunter.io/developer/1896370551) |

## What reviewers say

### T

[App page](https://appshunter.io/ios/app/t-calc-lite/id1630026837)

This app offers a dual calculator interface, allowing side-by-side or stacked calculations. Easily transfer results between calculators with a single touch for complex computations. It displays formulas for clarity and allows copying results to your device's memory.

**Highlights:** Two calculators in one, Copy and paste results between calculators, Input results from one calculator to another, Formula display, Copy results to device memory, Supports basic arithmetic operations

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Calkillator

[App page](https://appshunter.io/ios/app/calkillator/id6787863795)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calkillator Minions | $0.99 | one-time |


## Frequently asked questions

### Is T free?

T is free to download, with in-app purchases available.

### Is Calkillator free?

Calkillator is free to download, with in-app purchases available.

### Do T or Calkillator have ads?

Neither T nor Calkillator shows ads.

### Which is updated more often, T or Calkillator?

T ships an update weekly, and Calkillator monthly. Most recently, T was updated on November 7, 2026 and Calkillator on November 5, 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.*