# WonderCalc vs OTenkeyCalc

The clearest difference is ads: WonderCalc at none against OTenkeyCalc's shown. WonderCalc also leads on update cadence (every 5 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

WonderCalc ships an update every 5 days, OTenkeyCalc every 2 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | WonderCalc | OTenkeyCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/wondercalc/id6444459924/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 5 MB | 37 MB |
| Requires iOS | **16.0** | 16.7.10 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SharkMonkey Apps](https://appshunter.io/developer/1654824300) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### WonderCalc

[App page](https://appshunter.io/ios/app/wondercalc/id6444459924)

This utility app handles all your basic calculation needs, including unit conversions for length, weight, and temperature. It also offers advanced financial calculations for loans, such as monthly payments, total cost, and interest paid.

**Highlights:** Basic calculations, Cut, copy, and paste functionality, Unit conversions (length, weight, temperature), Loan payment calculations, Total loan cost and interest calculation

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

**In-app purchases:** none


### OTenkeyCalc

[App page](https://appshunter.io/ios/app/otenkeycalc/id6502439720)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WonderCalc free?

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

### Is OTenkeyCalc free?

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

### Do WonderCalc or OTenkeyCalc have ads?

OTenkeyCalc shows ads; WonderCalc does not.

### Which is updated more often, WonderCalc or OTenkeyCalc?

WonderCalc ships an update every 5 days, and OTenkeyCalc every 2 weeks. Most recently, WonderCalc was updated on October 24, 2026 and OTenkeyCalc on October 27, 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.*