# Auto Invert! vs Champaign Bus Tracker

The clearest difference is price: Champaign Bus Tracker at Free against Auto Invert!'s $0.49. Champaign Bus Tracker also leads on update cadence (every 2 days vs every 8 months). Auto Invert!'s advantage is ads (none vs shown) and device support (4 vs 2). On in-app purchases and iOS requirement there is nothing between them.

Champaign Bus Tracker is free to download; Auto Invert! costs $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.

Auto Invert! ships an update every 8 months, Champaign Bus Tracker every 2 days. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Auto Invert! | Champaign Bus Tracker |
| --- | --- | --- |
| Price | $0.49 | **Free** |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 2 days** |
| Monetization | Paid | — |
| Size | 1 MB | 59 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Riccardo Cecchini](https://appshunter.io/developer/1646372677) | [ZHI LI](https://appshunter.io/developer/1854597154) |

## What reviewers say

### Auto Invert!

[App page](https://appshunter.io/ios/app/auto-invert/id6443480300)

This extension inverts website brightness to reduce eye strain and improve nighttime readability without affecting images or videos. Easily toggle the feature for all tabs on a website with a single tap.

**Highlights:** Reduces eye strain, Improves nighttime readability, Inverts brightness without altering colors, Does not affect images or videos, One-tap toggle for all tabs

**Features:** Safari Extension

**In-app purchases:** none


### Champaign Bus Tracker

[App page](https://appshunter.io/ios/app/champaign-bus-tracker/id6755567974)

**In-app purchases:** none


## Frequently asked questions

### Is Auto Invert! free?

Auto Invert! costs $0.49, with no in-app purchases.

### Is Champaign Bus Tracker free?

Champaign Bus Tracker is free to download, with no in-app purchases.

### Do Auto Invert! or Champaign Bus Tracker have ads?

Champaign Bus Tracker shows ads; Auto Invert! does not.

### Which is updated more often, Auto Invert! or Champaign Bus Tracker?

Auto Invert! ships an update every 8 months, and Champaign Bus Tracker every 2 days. Most recently, Auto Invert! was updated on October 3, 2026 and Champaign Bus Tracker on October 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.*