# KOJI Filter App vs ChargeBuddy

The clearest difference is in-app purchases: KOJI Filter App at none against ChargeBuddy's 1. KOJI Filter App also leads on iOS requirement (15.0 vs 18.0). ChargeBuddy's advantage is update cadence (every 6 days vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. ChargeBuddy sells 1 one-off in-app purchase. KOJI Filter App asks for nothing beyond the download.

KOJI Filter App ships an update every 6 months, ChargeBuddy every 6 days. The most recent releases landed on October 19, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | KOJI Filter App | ChargeBuddy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chargebuddy-ev-charge-log/id6801120402/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 6 days** |
| Monetization | — | Free |
| Size | 74 MB | 6 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Harren Chua](https://appshunter.io/developer/1546545104) | [Richard Walker](https://appshunter.io/developer/1016056619) |

## What reviewers say

### KOJI Filter App

[App page](https://appshunter.io/ios/app/koji-filter-app/id1546942830)

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

**In-app purchases:** none


### ChargeBuddy

[App page](https://appshunter.io/ios/app/chargebuddy-ev-charge-log/id6801120402)

This app helps electric vehicle owners meticulously log and analyze their charging sessions. Track energy added, costs, locations, and charging networks to understand your EV charging habits and expenses over time.

**Highlights:** Log charging sessions with details, Build and search charging history, Analyze charging costs and habits, Visualize charging trends with charts, Organize charging locations, Track multiple charging networks

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChargeBuddy Pro | $1.99 | one-time |


## Frequently asked questions

### Is KOJI Filter App free?

KOJI Filter App is free to download, with no in-app purchases.

### Is ChargeBuddy free?

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

### Do KOJI Filter App or ChargeBuddy have ads?

Neither KOJI Filter App nor ChargeBuddy shows ads.

### Which is updated more often, KOJI Filter App or ChargeBuddy?

KOJI Filter App ships an update every 6 months, and ChargeBuddy every 6 days. Most recently, KOJI Filter App was updated on October 19, 2026 and ChargeBuddy on October 23, 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.*