# Source vs Nometer

The clearest difference is ads: Source at none against Nometer's shown. Source also leads on iOS requirement (15.1 vs 18.0). Nometer's advantage is update cadence (daily vs fortnightly). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Source sells 3 in-app purchases, starting at $7.99 per month and Nometer sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Source ships an update fortnightly, Nometer daily. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Source | Nometer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Daily** |
| Size | 62 MB | 81 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [CHANG-WEI FU](https://appshunter.io/developer/1837600448) | [REVU Limited Liability Company](https://appshunter.io/developer/6804941431) |

## What reviewers say

### Source

[App page](https://appshunter.io/ios/app/source-ai-copilot/id6756547151)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Source Pro (月費) | $7.99 | per month |
| Source Pro (年費) | $49.99 | per year |
| Source Pro 創始會員 | $99.99 | one-time |


### Nometer

[App page](https://appshunter.io/ios/app/nometer/id6804941429)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nometer Pro | $2.99 | per month |


## Frequently asked questions

### Is Source free?

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

### Is Nometer free?

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

### Do Source or Nometer have ads?

Nometer shows ads; Source does not.

### Which is updated more often, Source or Nometer?

Source ships an update fortnightly, and Nometer daily. Most recently, Source was updated on October 16, 2026 and Nometer on October 8, 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.*