# Image Scheduler vs Pettson's Inventions 4

The clearest difference is price: Pettson's Inventions 4 at $4.99 against Image Scheduler's $5.99. Pettson's Inventions 4 also leads on iOS requirement (12.0 vs 16.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Image Scheduler costs $5.99 and Pettson's Inventions 4 $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Image Scheduler ships an update every 7 months, Pettson's Inventions 4 every 6 months. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Image Scheduler | Pettson's Inventions 4 |
| --- | --- | --- |
| Price | $5.99 | **$4.99** |
| Rating | — | **[4.8 (8 ratings)](https://appshunter.io/ios/app/pettsons-inventions-4/id6504173576/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 months** |
| Monetization | — | Paid |
| Size | 92 MB | 320 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Språkbussen AB](https://appshunter.io/developer/958674222) | [Filimundus AB](https://appshunter.io/developer/468644481) |

## What reviewers say

### Image Scheduler

[App page](https://appshunter.io/ios/app/image-scheduler/id1249654327)

**Features:** Vision Pro support

**In-app purchases:** none


### Pettson's Inventions 4

[App page](https://appshunter.io/ios/app/pettsons-inventions-4/id6504173576)

Explore a workshop and help Findus assist Pettson with a malfunctioning machine. Solve intricate inventions by finding hidden objects and placing them correctly to progress towards a solution. Features a kid-friendly interface with adjustable difficulty for engaging gameplay.

**Highlights:** 50 new inventions to solve, Search workshop for hidden objects, Drag and drop item placement, Adjustable difficulty levels, Kid-friendly interface, Original artwork

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Image Scheduler free?

Image Scheduler costs $5.99, with no in-app purchases.

### Is Pettson's Inventions 4 free?

Pettson's Inventions 4 costs $4.99, with no in-app purchases.

### Do Image Scheduler or Pettson's Inventions 4 have ads?

Neither Image Scheduler nor Pettson's Inventions 4 shows ads.

### Which is updated more often, Image Scheduler or Pettson's Inventions 4?

Image Scheduler ships an update every 7 months, and Pettson's Inventions 4 every 6 months. Most recently, Image Scheduler was updated on October 26, 2026 and Pettson's Inventions 4 on October 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.*