# SagittalMeter Pro vs ISNCSCI Algorithm

The clearest difference is price: ISNCSCI Algorithm at Free against SagittalMeter Pro's $9.99. ISNCSCI Algorithm also leads on update cadence (every 3 months vs every 11 months) and iOS requirement (13.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

ISNCSCI Algorithm is free to download; SagittalMeter Pro costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SagittalMeter Pro ships an update every 11 months, ISNCSCI Algorithm every 3 months. The most recent releases landed on November 13, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | SagittalMeter Pro | ISNCSCI Algorithm |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/sagittalmeter-pro/id964135293/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 32 MB | 10 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Jean-Charles LE HUEC](https://appshunter.io/developer/1880028964) | [Praxis Spinal Cord Institute](https://appshunter.io/developer/980028790) |

## What reviewers say

### SagittalMeter Pro

[App page](https://appshunter.io/ios/app/sagittalmeter-pro/id964135293)

This app helps medical practitioners measure key parameters of sagittal balance directly from X-ray images using a phone. It aids in analyzing spine alignment for pre-operative planning and surgical outcomes. The tool provides measurements for pelvic incidence, pelvic tilt, sacral slope, and various lumbar and spinal angles.

**Highlights:** Measure sagittal balance parameters, Analyze spine alignment, Pre-operative planning tool, Calculate pelvic incidence, tilt, and sacral slope, Measure lumbar lordosis, Advanced mode for comprehensive analysis

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

**In-app purchases:** none


### ISNCSCI Algorithm

[App page](https://appshunter.io/ios/app/isncsci-algorithm/id6476418908)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SagittalMeter Pro free?

SagittalMeter Pro costs $9.99, with no in-app purchases.

### Is ISNCSCI Algorithm free?

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

### Do SagittalMeter Pro or ISNCSCI Algorithm have ads?

Neither SagittalMeter Pro nor ISNCSCI Algorithm shows ads.

### Which is updated more often, SagittalMeter Pro or ISNCSCI Algorithm?

SagittalMeter Pro ships an update every 11 months, and ISNCSCI Algorithm every 3 months. Most recently, SagittalMeter Pro was updated on November 13, 2026 and ISNCSCI Algorithm on November 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.*