# Simple Scheduler vs ShiftKnox

The clearest difference is update cadence: ShiftKnox at every 3 months against Simple Scheduler's every 34 months. ShiftKnox also leads on iOS requirement (15.0 vs 17.6). 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.

Simple Scheduler ships an update every 34 months, ShiftKnox every 3 months. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Simple Scheduler | ShiftKnox |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 3 months** |
| Size | 1 MB | 14 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Peter Hinman](https://appshunter.io/developer/1069067861) | [PBJStar](https://appshunter.io/developer/1788027721) |

## What reviewers say

### Simple Scheduler

[App page](https://appshunter.io/ios/app/simple-scheduler/id1089047773)

**Features:** macOS Compatibility

**In-app purchases:** none


### ShiftKnox

[App page](https://appshunter.io/ios/app/shiftknox/id6747751942)

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

**In-app purchases:** none


## Frequently asked questions

### Is Simple Scheduler free?

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

### Is ShiftKnox free?

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

### Do Simple Scheduler or ShiftKnox have ads?

Neither Simple Scheduler nor ShiftKnox shows ads.

### Which is updated more often, Simple Scheduler or ShiftKnox?

Simple Scheduler ships an update every 34 months, and ShiftKnox every 3 months. Most recently, Simple Scheduler was updated on October 10, 2026 and ShiftKnox on September 30, 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.*