# Caliper&Ruler vs Vaaday

The clearest difference is in-app purchases: Vaaday at none against Caliper&Ruler's 1. Vaaday also leads on update cadence (every 3 days vs every 6 weeks) and iOS requirement (15.1 vs 18.4). On price, ads and device support there is nothing between them.

Both are free to download. Caliper&Ruler sells 1 one-off in-app purchase. Vaaday asks for nothing beyond the download.

Caliper&Ruler ships an update every 6 weeks, Vaaday every 3 days. The most recent releases landed on October 12, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Caliper&Ruler | Vaaday |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caliper-and-ruler/id6749051381/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 25 MB |
| Requires iOS | 18.4 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | +4 | 12+ |
| Developer | [Jun Yamabe](https://appshunter.io/developer/1732682049) | [jeremy levy](https://appshunter.io/developer/1818159082) |

## What reviewers say

### Caliper&Ruler

[App page](https://appshunter.io/ios/app/caliper-and-ruler/id6749051381)

Transform your device into a precise digital caliper for measuring objects in inches and millimeters. Features intuitive drag-and-measure functionality and accurate screen calibration using common items.

**Highlights:** Dual measurement units (inches/millimeters), Intuitive drag-and-measure interface, Accurate screen calibration, Custom calibration options, Universal device compatibility

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### Vaaday

[App page](https://appshunter.io/ios/app/vaaday/id6762275307)

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

**In-app purchases:** none


## Frequently asked questions

### Is Caliper&Ruler free?

Caliper&Ruler is free to download, with in-app purchases available.

### Is Vaaday free?

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

### Do Caliper&Ruler or Vaaday have ads?

Neither Caliper&Ruler nor Vaaday shows ads.

### Which is updated more often, Caliper&Ruler or Vaaday?

Caliper&Ruler ships an update every 6 weeks, and Vaaday every 3 days. Most recently, Caliper&Ruler was updated on October 12, 2026 and Vaaday on October 1, 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.*