# Smart iMeters vs 23HourDay

The clearest difference is in-app purchases: Smart iMeters at none against 23HourDay's 2. 23HourDay's advantage is update cadence (fortnightly vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 23HourDay sells 2 in-app purchases, starting at $12.95 per month. Smart iMeters asks for nothing beyond the download.

Smart iMeters ships an update every 9 months, 23HourDay fortnightly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Smart iMeters | 23HourDay |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Fortnightly** |
| Size | 29 MB | 71 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Smart iMeters](https://appshunter.io/developer/6775329697) | [Thomas Smith](https://appshunter.io/developer/1744157870) |

## What reviewers say

### Smart iMeters

[App page](https://appshunter.io/ios/app/smart-imeters/id6450159159)

**Features:** macOS Compatibility

**In-app purchases:** none


### 23HourDay

[App page](https://appshunter.io/ios/app/23hourday/id6501989004)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan - Monthly | $12.95 | per month |
| Premium Plan - Yearly | $149.00 | per year |


## Frequently asked questions

### Is Smart iMeters free?

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

### Is 23HourDay free?

23HourDay is free to download, with in-app purchases available.

### Do Smart iMeters or 23HourDay have ads?

Neither Smart iMeters nor 23HourDay shows ads.

### Which is updated more often, Smart iMeters or 23HourDay?

Smart iMeters ships an update every 9 months, and 23HourDay fortnightly. Most recently, Smart iMeters was updated on November 3, 2026 and 23HourDay on November 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.*