# RealADSB vs KnowTAM

The clearest difference is review sentiment: KnowTAM at 100% against RealADSB's 35%. KnowTAM also leads on price (Free vs $6.99) and rating (5.0 vs 3.0). RealADSB's advantage is in-app purchases (none vs 8) and device support (5 vs 2). On ratings volume, update cadence and ads there is nothing between them.

KnowTAM is free to download; RealADSB costs $6.99 up front. KnowTAM sells 8 one-off in-app purchases. RealADSB asks for nothing beyond the download.

KnowTAM holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 35% of RealADSB's written reviews are positive against 100% of KnowTAM's.

RealADSB ships an update monthly, KnowTAM every 2 months. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | RealADSB | KnowTAM |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/realadsb/id743911968/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/knowtam/id6775458780/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 35.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 52 MB | 75 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | **iPhone, iPad, Mac, Apple TV, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nikolay Klimchuk](https://appshunter.io/developer/283288431) | [Winston Tripp Aviation LLC](https://appshunter.io/developer/6775458782) |

## What reviewers say

### RealADSB

[App page](https://appshunter.io/ios/app/realadsb/id743911968)

Track local air traffic from your device using ADS-B data feeds. View aircraft on a map or list, filter by various parameters, and access additional flight information. Supports custom feeds and public data sources.

**Highlights:** ADS-B traffic feed consumption, Map and list view of aircraft, Aircraft filtering by tail number, callsign, type, METAR and altitude adjustments, Push notifications for squawks 7600/7700, Integration with online flight resources

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### KnowTAM

[App page](https://appshunter.io/ios/app/knowtam/id6775458780)

Prepare for FAA knowledge tests and checkrides with flashcards, quizzes, and practice exams. Features detailed explanations, regulation references, and spaced repetition for effective learning. Study offline anytime, anywhere.

**Highlights:** Flashcards with CFI explanations, Practice exams mirroring real tests, Offline study functionality, Spaced repetition learning, Oral exam preparation, Study plan tailored to test date

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KnowTAM CAX Checkride | $9.99 | one-time |
| KnowTAM Instrument Checkride | $9.99 | one-time |
| KnowTAM Private Checkride | $9.99 | one-time |
| KnowTAM Multi-Engine | $14.99 | one-time |
| KnowTAM Commercial (CAX) | $19.99 | one-time |
| KnowTAM Instrument (IRA) | $19.99 | one-time |
| KnowTAM Private (PAR) - Full | $19.99 | one-time |
| All-Access Bundle | $59.99 | one-time |


## Frequently asked questions

### Is RealADSB free?

RealADSB costs $6.99, with no in-app purchases.

### Is KnowTAM free?

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

### Which has better reviews, RealADSB or KnowTAM?

KnowTAM is rated higher. RealADSB averages 3.0 out of 5 from 4 ratings, while KnowTAM averages 5.0 from 2 ratings.

### Do RealADSB or KnowTAM have ads?

Neither RealADSB nor KnowTAM shows ads.

### Which is updated more often, RealADSB or KnowTAM?

RealADSB ships an update monthly, and KnowTAM every 2 months. Most recently, RealADSB was updated on October 6, 2026 and KnowTAM on October 17, 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.*