# BiliCalc vs SPIRO

The clearest difference is review sentiment: BiliCalc at 66% against SPIRO's 0%. BiliCalc also leads on update cadence (every 2 months vs every 7 months) and chart position (#109 vs unranked). SPIRO's advantage is iOS requirement (12.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

BiliCalc costs $1.99 and SPIRO $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

BiliCalc ships an update every 2 months, SPIRO every 7 months. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | BiliCalc | SPIRO |
| --- | --- | --- |
| Price | **$1.99** | $3.99 |
| Positive reviews | **65.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | **Free** | Paid |
| Best chart rank | **#109** | — |
| Size | 6 MB | 125 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Jacob Beniflah, MD](https://appshunter.io/developer/432749902) | [Universite Laval](https://appshunter.io/developer/386592978) |

## What reviewers say

### BiliCalc

[App page](https://appshunter.io/ios/app/bilicalc/id432749899)

**Currently charting:** #109 Top Paid · Medical (US App Store)

This app calculates phototherapy thresholds for newborns based on age, bilirubin levels, and neurotoxicity risk, referencing AAP guidelines. It displays values on a phototherapy nomogram and identifies the patient's risk zone using the Bhutani Nomogram.

**Highlights:** Calculates phototherapy threshold for newborns, Displays values on phototherapy nomogram, Identifies patient risk zone using Bhutani Nomogram, Calculates age from birth and lab times, Direct links to reference articles and risk factors, Supports US and SI units

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 👍 Simple design
- 👍 User-friendly interface
- ⏱️ Time saver
- 👍 Great for quick calculations

**What reviewers complain about**

- ❌ Outdated guidelines (2004)
- ❌ Not updated for 2022 guidelines
- ❌ Inaccurate plotting (historical)
- ❌ Potentially dangerous inaccuracies
- ❌ Appears abandoned

**Reported bugs**

- Intermittently inaccurate plotting of bili values
- Plots bili at lower than value entered
- Graph is backwards (historical)
- Instability misspelled (historical)
- Graph errors when on phone call (historical)

**Requested features**

- Update to 2022 guidelines
- Include transcutaneous measurements
- Show hours since birth on graph
- Plot more than one point on graph
- Add dark mode option


### SPIRO

[App page](https://appshunter.io/ios/app/spiro/id1135982423)

This medical app assists healthcare professionals and students in interpreting spirometry tests. It provides diagnostic and treatment suggestions based on entered data and offers access to educational materials and respiratory health guidelines.

**Highlights:** Interpret spirometry tests, Diagnostic suggestions, Treatment suggestions, Access respiratory guidelines, Educational material, Patient follow-up tool

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BiliCalc free?

BiliCalc costs $1.99, with no in-app purchases.

### Is SPIRO free?

SPIRO costs $3.99, with no in-app purchases.

### Do BiliCalc or SPIRO have ads?

Neither BiliCalc nor SPIRO shows ads.

### Which is updated more often, BiliCalc or SPIRO?

BiliCalc ships an update every 2 months, and SPIRO every 7 months. Most recently, BiliCalc was updated on October 15, 2026 and SPIRO on September 30, 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.*