# congstar vs Notan

The clearest difference is in-app purchases: congstar at none against Notan's 1. congstar also leads on ratings volume (275 vs 55). Notan's advantage is review sentiment (93% vs 73%) and device support (3 vs 1). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Notan sells 1 one-off in-app purchase. congstar asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for congstar against 4.6 for Notan. That said, the two scores are not equally well evidenced: congstar has 275 ratings behind it against 55, so its average is the more settled of the two. Written reviews are what separate them: 73% of congstar's written reviews are positive against 93% of Notan's.

congstar ships an update fortnightly, Notan every 2 weeks. The most recent releases landed on September 21, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | congstar | Notan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (275 ratings)](https://appshunter.io/ios/app/congstar/id917314686/reviews) | **[4.6 (55 ratings)](https://appshunter.io/ios/app/notan/id1487338991/reviews)** |
| Number of ratings | **275** | 55 |
| Positive reviews | 72.6% of reviews | **92.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 201 MB | 40 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [congstar GmbH](https://appshunter.io/developer/917314685) | [Tien Do Nam](https://appshunter.io/developer/1552589563) |

## What reviewers say

### congstar

[App page](https://appshunter.io/ios/app/congstar/id917314686)

Easily manage your mobile plan and track usage with this app. View data, SMS, and minutes, recharge prepaid credit, and manage your SIM or eSIM. Control your tariff and options, update personal details, and access bills.

**Highlights:** Track data, SMS, and minutes usage, Manage tariff and options, Recharge prepaid credit, View bills, Manage SIM and eSIM, Update personal data

**In-app purchases:** none


### Notan

[App page](https://appshunter.io/ios/app/notan/id1487338991)

This app serves as an intelligent academic companion for students, parents, and learners. It offers effortless grade tracking, insightful visual analytics, and smart reminders to help users stay on top of their academic progress and goals. An AI coach provides personalized feedback and study recommendations.

**Highlights:** Effortless grade tracking, Insightful visual analytics, Smart reminders and alerts, Customizable grading scales, AI coach for feedback and recommendations, Seamless iCloud sync

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $4.99 | one-time |


## Frequently asked questions

### Is congstar free?

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

### Is Notan free?

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

### Which has better reviews, congstar or Notan?

Notan is rated higher. congstar averages 4.5 out of 5 from 275 ratings, while Notan averages 4.6 from 55 ratings.

### Do congstar or Notan have ads?

Neither congstar nor Notan shows ads.

### Which is updated more often, congstar or Notan?

congstar ships an update fortnightly, and Notan every 2 weeks. Most recently, congstar was updated on September 21, 2026 and Notan on September 23, 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.*