# DiaMeter vs INVITRO

The clearest difference is rating: DiaMeter at 4.7 against INVITRO's 2.8. DiaMeter also leads on iOS requirement (11.0 vs 15.1). INVITRO's advantage is in-app purchases (none vs 3) and review sentiment (60% vs 38%). On price, ads and device support there is nothing between them.

Both are free to download. DiaMeter sells 3 in-app purchases, starting at $4.49 per month. INVITRO asks for nothing beyond the download.

DiaMeter holds the better App Store score, 4.7 against 2.8. That said, the two scores are not equally well evidenced: INVITRO has 65 ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 38% of DiaMeter's written reviews are positive against 60% of INVITRO's, so the app with the better star average is not the one people write more warmly about.

DiaMeter ships an update monthly, INVITRO fortnightly. The most recent releases landed on September 22, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | DiaMeter | INVITRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (7 ratings)](https://appshunter.io/ios/app/diameter/id1196947268/reviews)** | [2.8 (65 ratings)](https://appshunter.io/ios/app/invitro/id1538601072/reviews) |
| Number of ratings | 7 | **65** |
| Positive reviews | 38.1% of reviews | **59.8% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Freemium | **Free** |
| Size | 69 MB | 81 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [MeteorIT](https://appshunter.io/developer/1156077103) | [Independent Laboratory INVITRO](https://appshunter.io/developer/499936775) |

## What reviewers say

### DiaMeter

[App page](https://appshunter.io/ios/app/diameter/id1196947268)

This app helps manage diabetes by tracking blood sugar, insulin doses, and carbohydrate intake. It provides clear statistics and reminders to help users achieve better control over their condition. Features include a bread unit calculator and educational articles.

**Highlights:** Diabetes diary with all records, Quick data entry, Bread unit calculator, Insulin dose calculation, Statistics for sugar, insulin, and food, Data export to table, Cloud synchronization, Automatic reminders

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Месячная подписка | $4.49 | per month |
| Годовая подписка (промо) | $36.99 | per year |
| Полный доступ (годовая подписка) | $37.99 | per year |


### INVITRO

[App page](https://appshunter.io/ios/app/invitro/id1538601072)

Access your medical test results quickly and easily. This app allows you to view detailed information on over 3000 lab tests, track your health trends with dynamic graphs, and find nearby medical offices. You can also order tests and schedule home sample collection.

**Highlights:** View over 3000 medical tests, Order tests and schedule home collection, Track test result dynamics with graphs, Find nearby medical offices, Access test descriptions and norms, Share results via email

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

**In-app purchases:** none


## Frequently asked questions

### Is DiaMeter free?

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

### Is INVITRO free?

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

### Which has better reviews, DiaMeter or INVITRO?

DiaMeter is rated higher. DiaMeter averages 4.7 out of 5 from 7 ratings, while INVITRO averages 2.8 from 65 ratings.

### Do DiaMeter or INVITRO have ads?

Neither DiaMeter nor INVITRO shows ads.

### Which is updated more often, DiaMeter or INVITRO?

DiaMeter ships an update monthly, and INVITRO fortnightly. Most recently, DiaMeter was updated on September 22, 2026 and INVITRO on September 28, 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.*