# TWDIW vs EveryCalc

The clearest difference is update cadence: EveryCalc at daily against TWDIW's every 3 weeks. TWDIW's advantage is iOS requirement (13.0 vs 18.0). 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.

TWDIW ships an update every 3 weeks, EveryCalc daily. The most recent releases landed on October 18, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | TWDIW | EveryCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Size | 200 MB | 2 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [數位發展部](https://appshunter.io/developer/1759963812) | [TZU-TENG HUANG](https://appshunter.io/developer/1603805799) |

## What reviewers say

### TWDIW

[App page](https://appshunter.io/ios/app/twdiw/id6742222992)

**In-app purchases:** none


### EveryCalc

[App page](https://appshunter.io/ios/app/everycalc/id6759590989)

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

**In-app purchases:** none


## Frequently asked questions

### Is TWDIW free?

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

### Is EveryCalc free?

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

### Do TWDIW or EveryCalc have ads?

Neither TWDIW nor EveryCalc shows ads.

### Which is updated more often, TWDIW or EveryCalc?

TWDIW ships an update every 3 weeks, and EveryCalc daily. Most recently, TWDIW was updated on October 18, 2026 and EveryCalc on October 10, 2026.

---

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