# ProdoClock vs Oilfield Calendar+

The clearest difference is price: ProdoClock at Free against Oilfield Calendar+'s $0.99. ProdoClock also leads on update cadence (every 5 days vs every 3 weeks) and iOS requirement (15.1 vs 17.0). Oilfield Calendar+'s advantage is in-app purchases (none vs 2) and chart position (#198 vs unranked). On ads and device support there is nothing between them.

ProdoClock is free to download; Oilfield Calendar+ costs $0.99 up front. ProdoClock sells 2 in-app purchases, starting at $2.99 per month. Oilfield Calendar+ asks for nothing beyond the download.

ProdoClock ships an update every 5 days, Oilfield Calendar+ every 3 weeks. The most recent releases landed on October 16, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | ProdoClock | Oilfield Calendar+ |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/prodoclock-visual-planner/id6758603667/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Freemium | — |
| Best chart rank | — | **#198** |
| Size | 52 MB | 2 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Danish Shaikh](https://appshunter.io/developer/1873898017) | [Apps4World](https://appshunter.io/developer/1633802880) |

## What reviewers say

### ProdoClock

[App page](https://appshunter.io/ios/app/prodoclock-visual-planner/id6758603667)

Visualize your schedule as a clock face, integrating calendars, tasks, and reminders for an instant overview of your day. Customize layouts, themes, and widgets to suit your planning style. Offers analytics and accessibility features for a clearer, controlled approach to time management.

**Highlights:** Visual clock face scheduling, Calendar sync (Google, Apple, Outlook), Task and reminder integration, Customizable layouts and themes, Interactive widgets, Time analytics, Accessibility modes

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ProdoClock Pro Monthly | $2.99 | per month |
| Pro Lifetime | $15.00 | one-time |


### Oilfield Calendar+

[App page](https://appshunter.io/ios/app/oilfield-calendar-plus/id6809033854)

**Currently charting:** #198 Top Paid · Productivity (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is ProdoClock free?

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

### Is Oilfield Calendar+ free?

Oilfield Calendar+ costs $0.99, with no in-app purchases.

### Do ProdoClock or Oilfield Calendar+ have ads?

Neither ProdoClock nor Oilfield Calendar+ shows ads.

### Which is updated more often, ProdoClock or Oilfield Calendar+?

ProdoClock ships an update every 5 days, and Oilfield Calendar+ every 3 weeks. Most recently, ProdoClock was updated on October 16, 2026 and Oilfield Calendar+ on October 29, 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.*