# Onis Service vs MIDCalculator

The clearest difference is update cadence: MIDCalculator at every 4 months against Onis Service's every 12 months. 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.

Onis Service ships an update every 12 months, MIDCalculator every 4 months. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Onis Service | MIDCalculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/onis-service/id6737501959/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 12 MB | 21 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Datacare LLC](https://appshunter.io/developer/1220811353) | [Masu Pos LLC](https://appshunter.io/developer/1684199118) |

## What reviewers say

### Onis Service

[App page](https://appshunter.io/ios/app/onis-service/id6737501959)

A simple appointment booking system designed for various services and businesses. It streamlines the process of scheduling appointments, making it easier for both service providers and clients.

**Highlights:** Appointment scheduling, Service provider management, Client booking, Business management, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


### MIDCalculator

[App page](https://appshunter.io/ios/app/midcalculator/id6743425564)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Onis Service free?

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

### Is MIDCalculator free?

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

### Do Onis Service or MIDCalculator have ads?

Neither Onis Service nor MIDCalculator shows ads.

### Which is updated more often, Onis Service or MIDCalculator?

Onis Service ships an update every 12 months, and MIDCalculator every 4 months. Most recently, Onis Service was updated on October 9, 2026 and MIDCalculator on October 12, 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.*