# HSADSP.31 vs T

The clearest difference is update cadence: T at weekly against HSADSP.31's every 3 months. HSADSP.31's advantage is iOS requirement (8.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

HSADSP.31 ships an update every 3 months, T weekly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | HSADSP.31 | T |
| --- | --- | --- |
| 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 | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | — | Free |
| Size | 13 MB | 4 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [杏生 卢](https://appshunter.io/developer/1094592555) | [Hiroyuki Ueda](https://appshunter.io/developer/473279916) |

## What reviewers say

### HSADSP.31

[App page](https://appshunter.io/ios/app/hsadsp31/id1453655012)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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

**In-app purchases:** none


## Frequently asked questions

### Is HSADSP.31 free?

HSADSP.31 is free to download, with no in-app purchases.

### Is T free?

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

### Do HSADSP.31 or T have ads?

Neither HSADSP.31 nor T shows ads.

### Which is updated more often, HSADSP.31 or T?

HSADSP.31 ships an update every 3 months, and T weekly. Most recently, HSADSP.31 was updated on October 26, 2026 and T on October 24, 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.*