# Eco Notify vs C

The clearest difference is in-app purchases: C at none against Eco Notify's 2. C also leads on ads (none vs shown). Eco Notify's advantage is update cadence (every 3 days vs every 9 days) and iOS requirement (17.5 vs 26.0). On price and device support there is nothing between them.

Both are free to download. Eco Notify sells 2 one-off in-app purchases. C asks for nothing beyond the download.

Eco Notify ships an update every 3 days, C every 9 days. The most recent releases landed on October 5, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Eco Notify | C |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 9 days |
| Size | 11 MB | 5 MB |
| Requires iOS | **17.5** | 26.0 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Yu Takahashi](https://appshunter.io/developer/1674352907) | [HANDSUM.INC](https://appshunter.io/developer/968016240) |

## What reviewers say

### Eco Notify

[App page](https://appshunter.io/ios/app/eco-notify/id6624308398)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support Developer (Coffee) | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |


### C

[App page](https://appshunter.io/ios/app/c-1440/id6779900172)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Eco Notify free?

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

### Is C free?

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

### Do Eco Notify or C have ads?

Eco Notify shows ads; C does not.

### Which is updated more often, Eco Notify or C?

Eco Notify ships an update every 3 days, and C every 9 days. Most recently, Eco Notify was updated on October 5, 2026 and C on October 4, 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.*