# OTAMap vs DA20 M&B

The clearest difference is review sentiment: OTAMap at 50% against DA20 M&B's 0%. OTAMap also leads on device support (3 vs 1). DA20 M&B's advantage is update cadence (every 6 months vs every 38 months) and price ($1.99 vs $2.99). On ads, in-app purchases, monetization model and iOS requirement there is nothing between them.

OTAMap costs $2.99 and DA20 M&B $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

OTAMap ships an update every 38 months, DA20 M&B every 6 months. The most recent releases landed on October 23, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | OTAMap | DA20 M&B |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[3.6 (9 ratings)](https://appshunter.io/ios/app/otamap/id441016695/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 6 months** |
| Monetization | Paid | Paid |
| Size | 23 MB | 15 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Arctic Surf Designs](https://appshunter.io/developer/441016698) | [Pedro Isidoro](https://appshunter.io/developer/1506809339) |

## What reviewers say

### OTAMap

[App page](https://appshunter.io/ios/app/otamap/id441016695)

Locate and aim your antenna for Over The Air (OTA) television and FM stations. View transmission tower positions relative to your location to optimize reception for local or distant channels. Supports continental USA, Alaska, Canada, Hawaii, and Northern Mexico.

**Highlights:** Find OTA TV and FM stations, View transmission tower locations, Optimize antenna aiming, Filter stations by distance, power, and contour, Save and recall locations, Offline mapping functionality

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

**In-app purchases:** none


### DA20 M&B

[App page](https://appshunter.io/ios/app/da20-m-and-b/id1553610529)

Calculate aircraft mass and balance with interactive weight input and real-time chart plotting. Supports various aircraft models and generates professional PDF loadsheets. Includes unit conversion and data retention for convenience.

**Highlights:** Interactive weight adding, Real-time chart plotting, Loading chart access, Overweight warnings, PDF loadsheet generation, Unit conversion, Data retention

**In-app purchases:** none


## Frequently asked questions

### Is OTAMap free?

OTAMap costs $2.99, with no in-app purchases.

### Is DA20 M&B free?

DA20 M&B costs $1.99, with no in-app purchases.

### Do OTAMap or DA20 M&B have ads?

Neither OTAMap nor DA20 M&B shows ads.

### Which is updated more often, OTAMap or DA20 M&B?

OTAMap ships an update every 38 months, and DA20 M&B every 6 months. Most recently, OTAMap was updated on October 23, 2026 and DA20 M&B on October 16, 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.*