# SPEKTR vs Perimeter PRO

The clearest difference is review sentiment: SPEKTR at 100% against Perimeter PRO's 40%. SPEKTR also leads on rating (5.0 vs 3.0) and in-app purchases (none vs 2). Perimeter PRO's advantage is update cadence (every 3 days vs every 3 weeks) and ratings volume (8 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Perimeter PRO sells 2 one-off in-app purchases. SPEKTR asks for nothing beyond the download.

SPEKTR holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Perimeter PRO has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of SPEKTR's written reviews are positive against 40% of Perimeter PRO's.

SPEKTR ships an update every 3 weeks, Perimeter PRO every 3 days. The most recent releases landed on August 19, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | SPEKTR | Perimeter PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spektr/id6479655377/reviews)** | [3.0 (8 ratings)](https://appshunter.io/ios/app/perimeter-pro/id6624308929/reviews) |
| Number of ratings | 1 | **8** |
| Positive reviews | **100.0% of reviews** | 40.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 37 MB | 7 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stark Innovative LLC](https://appshunter.io/developer/1671145727) | [Viszt Peter](https://appshunter.io/developer/1448243869) |

## What reviewers say

### SPEKTR

[App page](https://appshunter.io/ios/app/spektr/id6479655377)

Streamline foundation inspections with a guided process for identifying products and recording specifications. Upload images directly into your reports for comprehensive documentation. Designed for efficiency and accuracy in the field.

**Highlights:** Step-by-step inspection process, Foundation product identification, Record quantity, load, depth, pressure, Upload product images, Generate inspection reports

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

**In-app purchases:** none


### Perimeter PRO

[App page](https://appshunter.io/ios/app/perimeter-pro/id6624308929)

This augmented reality tool allows users to measure outdoor spaces and create professional blueprints. It's ideal for professionals and DIYers needing precise measurements for planning, design, and sharing.

**Highlights:** Measure outdoor spaces with AR, Calculate area, perimeter, and volume, Generate detailed, editable blueprints, Save and organize projects, Export and share blueprints as PDF

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited exports | $4.99 | one-time |
| PRO version | $4.99 | one-time |


## Frequently asked questions

### Is SPEKTR free?

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

### Is Perimeter PRO free?

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

### Which has better reviews, SPEKTR or Perimeter PRO?

SPEKTR is rated higher. SPEKTR averages 5.0 out of 5 from 1 ratings, while Perimeter PRO averages 3.0 from 8 ratings.

### Do SPEKTR or Perimeter PRO have ads?

Neither SPEKTR nor Perimeter PRO shows ads.

### Which is updated more often, SPEKTR or Perimeter PRO?

SPEKTR ships an update every 3 weeks, and Perimeter PRO every 3 days. Most recently, SPEKTR was updated on August 19, 2026 and Perimeter PRO on September 24, 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.*