# OopsTime vs Driver Calendar

The clearest difference is in-app purchases: Driver Calendar at none against OopsTime's 1. Driver Calendar also leads on update cadence (every 5 days vs every 2 months) and iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. OopsTime sells 1 one-off in-app purchase. Driver Calendar asks for nothing beyond the download.

OopsTime ships an update every 2 months, Driver Calendar every 5 days. The most recent releases landed on September 23, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | OopsTime | Driver Calendar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Size | 29 MB | 62 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, Mac | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Olive Corp](https://appshunter.io/developer/1810393790) | [Won-ho Choi](https://appshunter.io/developer/1813582639) |

## What reviewers say

### OopsTime

[App page](https://appshunter.io/ios/app/oopstime/id6745002580)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $6.99 | one-time |


### Driver Calendar

[App page](https://appshunter.io/ios/app/driver-calendar/id6745732652)

**In-app purchases:** none


## Frequently asked questions

### Is OopsTime free?

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

### Is Driver Calendar free?

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

### Do OopsTime or Driver Calendar have ads?

Neither OopsTime nor Driver Calendar shows ads.

### Which is updated more often, OopsTime or Driver Calendar?

OopsTime ships an update every 2 months, and Driver Calendar every 5 days. Most recently, OopsTime was updated on September 23, 2026 and Driver Calendar on September 15, 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.*