# Sphere vs MinervaOS

The clearest difference is monetization model: Sphere at freemium against MinervaOS's subscription. Sphere also leads on ads (none vs shown) and rating (5.0 vs 4.8). MinervaOS's advantage is iOS requirement (17.0 vs 26.0). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. Sphere sells 2 in-app purchases, starting at $9.99 per month and MinervaOS sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Sphere holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Sphere ships an update every 2 days, MinervaOS every 4 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sphere | MinervaOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/sphere-fast-calorie-tracker/id6759507165/reviews)** | [4.8 (8 ratings)](https://appshunter.io/ios/app/minervaos/id6784788087/reviews) |
| Number of ratings | 4 | **8** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 4 days |
| Monetization | **Freemium** | Subscription |
| Size | 44 MB | 43 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Upstory](https://appshunter.io/developer/1879111624) | [Brizo Finance LLC](https://appshunter.io/developer/1893174874) |

## What reviewers say

### Sphere

[App page](https://appshunter.io/ios/app/sphere-fast-calorie-tracker/id6759507165)

Effortlessly track your food intake with AI-powered photo logging and instant search. Designed for speed and consistency, it helps you achieve your weight loss, muscle building, or maintenance goals.

**Highlights:** AI-powered photo logging, Instant food search, Smart auto-add favorites, Skip days for tracking breaks, Clean daily dashboard, Streak tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $9.99 | per month |
| Premium Annual | $59.99 | per year |


### MinervaOS

[App page](https://appshunter.io/ios/app/minervaos/id6784788087)

This app provides a comprehensive calorie tracking system, calculating both intake and expenditure. It offers personalized burn estimates based on your data and supports numerous wearables for accurate workout tracking. Users can also engage with a social community and view fitness trends over time.

**Highlights:** Comprehensive calorie tracking, Personalized calorie burn calculation, Wearable device integration, Workout data recalculation, Social fitness community, Fitness trend analysis

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Minerva Monthly | $9.99 | per month |
| Minerva Annual | $69.99 | per year |


## Frequently asked questions

### Is Sphere free?

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

### Is MinervaOS free?

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

### Which has better reviews, Sphere or MinervaOS?

Sphere is rated higher. Sphere averages 5.0 out of 5 from 4 ratings, while MinervaOS averages 4.8 from 8 ratings.

### Do Sphere or MinervaOS have ads?

MinervaOS shows ads; Sphere does not.

### Which is updated more often, Sphere or MinervaOS?

Sphere ships an update every 2 days, and MinervaOS every 4 days. Most recently, Sphere was updated on October 28, 2026 and MinervaOS on October 31, 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.*