# WoofCalc vs KnitReader

The clearest difference is ads: KnitReader at none against WoofCalc's shown. KnitReader also leads on update cadence (weekly vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. WoofCalc sells 1 one-off in-app purchase and KnitReader sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

WoofCalc ships an update monthly, KnitReader weekly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | WoofCalc | KnitReader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Weekly** |
| Size | 54 MB | 3 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TATSUYA ASANO](https://appshunter.io/developer/1877006861) | [Yui Akiba](https://appshunter.io/developer/1895446339) |

## What reviewers say

### WoofCalc

[App page](https://appshunter.io/ios/app/woofcalc/id6759528925)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Version | $1.99 | one-time |


### KnitReader

[App page](https://appshunter.io/ios/app/knitreader/id6763752253)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Plan | $0.99 | one-time |
| Premium Plan | $2.99 | one-time |


## Frequently asked questions

### Is WoofCalc free?

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

### Is KnitReader free?

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

### Do WoofCalc or KnitReader have ads?

WoofCalc shows ads; KnitReader does not.

### Which is updated more often, WoofCalc or KnitReader?

WoofCalc ships an update monthly, and KnitReader weekly. Most recently, WoofCalc was updated on October 28, 2026 and KnitReader 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.*