# BMI Calculator ; ideal weight vs NightFlow

The clearest difference is in-app purchases: NightFlow at none against BMI Calculator ; ideal weight's 2. NightFlow also leads on ads (none vs shown). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. BMI Calculator ; ideal weight sells 2 in-app purchases, starting at $9.99 per month. NightFlow asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for BMI Calculator ; ideal weight against 5.0 for NightFlow. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

BMI Calculator ; ideal weight ships an update every 3 months, NightFlow every 6 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | BMI Calculator ; ideal weight | NightFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/bmi-calculator-ideal-weight/id6445996548/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/nightflow/id6741455495/reviews) |
| Number of ratings | **2** | 1 |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 65 MB | 20 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [PAPYONLAB YAZILIM BILGI TEKNOLOJILERI TICARET LIMITED SIRKETI](https://appshunter.io/developer/1546900076) | [Caleb George Brown](https://appshunter.io/developer/1794242534) |

## What reviewers say

### BMI Calculator ; ideal weight

[App page](https://appshunter.io/ios/app/bmi-calculator-ideal-weight/id6445996548)

Calculate your Body Mass Index and track your progress towards ideal weight. Features include 21-day challenges, daily photo tracking, an AI chatbot for insights, and personalized healthy recipes. Monitor fat percentage and weight changes with CDC-aligned accuracy.

**Highlights:** BMI Calculator, Ideal Weight Tracker, 21-day Challenges, Daily Body Photo Tracking, AI BMI Buddy Chatbot, Personalized Recipes, Data Export & Sharing

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BMI Calculator PRO Monthly | $9.99 | per month |
| BMI Calculator Annual Package | $29.99 | per year |


### NightFlow

[App page](https://appshunter.io/ios/app/nightflow/id6741455495)

This app listens for silence after your TV turns off and gently fades in nature sounds to help you fall asleep. It works automatically without timers and runs in the background, even when your phone is locked.

**Highlights:** Smart listening for TV silence, Automatic sound fade-in, Background monitoring, Multiple nature soundscapes, Privacy-focused on-device processing, Dark mode support

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

**In-app purchases:** none


## Frequently asked questions

### Is BMI Calculator ; ideal weight free?

BMI Calculator ; ideal weight is free to download, with in-app purchases available.

### Is NightFlow free?

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

### Which has better reviews, BMI Calculator ; ideal weight or NightFlow?

BMI Calculator ; ideal weight and NightFlow are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do BMI Calculator ; ideal weight or NightFlow have ads?

BMI Calculator ; ideal weight shows ads; NightFlow does not.

### Which is updated more often, BMI Calculator ; ideal weight or NightFlow?

BMI Calculator ; ideal weight ships an update every 3 months, and NightFlow every 6 weeks. Most recently, BMI Calculator ; ideal weight was updated on November 3, 2026 and NightFlow on November 4, 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.*