# istas21 vs NutriLogger

The clearest difference is in-app purchases: istas21 at none against NutriLogger's 2. istas21 also leads on iOS requirement (7.0 vs 16.0). NutriLogger's advantage is update cadence (every 5 weeks vs every 15 months). On price, ads and device support there is nothing between them.

Both are free to download. NutriLogger sells 2 in-app purchases, starting at $0.99 per month. istas21 asks for nothing beyond the download.

istas21 ships an update every 15 months, NutriLogger every 5 weeks. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | istas21 | NutriLogger |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 5 weeks** |
| Size | 25 MB | 7 MB |
| Requires iOS | **7.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SPL SISTEMAS DE INFORMACION, SL](https://appshunter.io/developer/482938841) | [Murilo Ribeiro de Oliveira](https://appshunter.io/developer/1704741073) |

## What reviewers say

### istas21

[App page](https://appshunter.io/ios/app/istas21/id1118374567)

**Features:** macOS Compatibility

**In-app purchases:** none


### NutriLogger

[App page](https://appshunter.io/ios/app/nutrilogger/id6463663547)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Annual Subscription | $4.99 | per year |


## Frequently asked questions

### Is istas21 free?

istas21 is free to download, with no in-app purchases.

### Is NutriLogger free?

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

### Do istas21 or NutriLogger have ads?

Neither istas21 nor NutriLogger shows ads.

### Which is updated more often, istas21 or NutriLogger?

istas21 ships an update every 15 months, and NutriLogger every 5 weeks. Most recently, istas21 was updated on October 26, 2026 and NutriLogger on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*