# inch by inch vs SecondSpace

The clearest difference is in-app purchases: SecondSpace at none against inch by inch's 1. SecondSpace also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. inch by inch sells 1 in-app purchase, starting at $1.99 per month. SecondSpace asks for nothing beyond the download.

inch by inch ships an update every 2 weeks, SecondSpace weekly. The most recent releases landed on June 1, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | inch by inch | SecondSpace |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 210 MB | 259 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Mujuryoku Inc.](https://appshunter.io/developer/820859744) | [Ice Mobile (pty) Ltd](https://appshunter.io/developer/1107992609) |

## What reviewers say

### inch by inch

[App page](https://appshunter.io/ios/app/inch-by-inch/id1528614716)

Record and visualize your child's growth using augmented reality. Measure height with a photo and see progress overlaid on the real world. Share milestones with others via a web link.

**Highlights:** AR height comparison, Automatic height measurement from photos, 3D photo capture (LiDAR devices), WebAR sharing of growth records, Multiple record display in AR

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Paid Features | $1.99 | per month |


### SecondSpace

[App page](https://appshunter.io/ios/app/secondspace/id6450105049)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is inch by inch free?

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

### Is SecondSpace free?

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

### Do inch by inch or SecondSpace have ads?

inch by inch shows ads; SecondSpace does not.

### Which is updated more often, inch by inch or SecondSpace?

inch by inch ships an update every 2 weeks, and SecondSpace weekly. Most recently, inch by inch was updated on June 1, 2026 and SecondSpace on September 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.*