Comparison

SwiftConvert vs RadioMail

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SwiftConvert

Easily convert numbers between binary, octal, decimal, and hexadecimal bases. Input a number in one base and instantly view its representation in all supported bases. Features a specialized binary keyboard with a 64-bit grid for direct bit manipulation.

Highlights
  • Multiple number base conversion
  • Simultaneous display of all bases
  • Base-specific keyboard adjustment
  • 64-bit binary grid display
  • Copy converted numbers
Features
Read full description

SwiftConvert is a nice simple app for people who need to swiftly convert between different number bases, as programmers often do. It supports bases of 2, 8, 10 and 16. Enter a number in any of those bases, and simultaneously see the number in every base. Just touch the display for the base you want to use for entry - the keyboard will adjust to fit that base. The binary keyboard even has a 64-bit grid display which lets you toggle any bit directly with your finger, giving you a key for each bit. You can copy the resulting number in any base, just hold your finger on the display you want and the "copy" menu item will appear.

About

RadioMail

Access the Winlink amateur radio email system from your Apple devices. Send and receive messages over the internet or amateur radio, manage your inbox, and stay connected off-grid. Requires a valid amateur radio license.

Highlights
  • Send/receive email over internet or radio
  • Background message checking
  • Connect via Packet, ARDOP, VARA FM/HF
  • Peer-to-peer email exchange
  • Winlink station directory with best path prediction
  • Smart mailboxes for organization
  • Send resized photos over radio
  • Compose and view Winlink forms
Features
Read full description

RadioMail gives you access to the Winlink amateur radio email system from your iPhone, iPad, and Apple Silicon Mac. Send and receive email over the internet or amateur radio, manage your messages, and stay connected when you’re away from traditional communications. A valid amateur radio license is required. SEND YOUR WAY Send and receive email over Wi-Fi or cellular when you’re online, or hold messages for your next radio session. RadioMail can also check for new messages in the background and notify you when they arrive. GET ON THE AIR Connect to Winlink stations using Packet, ARDOP, or VARA FM and HF. RadioMail works with a growing range of radios, TNCs, and software modems, and lets you save multiple devices so they’re ready when you need them. Supported radios: * BTECH UV-PRO, UV-50PRO * VERO VR-N76, VR-N7600 * RADIODITY GA-5WB, DB50-B * Kenwood TH-D74 and TH-D75 with B.B. Link adapter * Icom IC-705 over Bluetooth + USB, or Wi-Fi * PicoAPRS V4 Supported KISS TNCs and software modems: * Mobilinkd * DigiPi * Dire Wolf * LiNK500 VARA FM and HF require a VARA modem running on a separate computer. Packet and VARA FM also support configurable digipeaters. PACKET AND ARDOP BUILT IN No separate modem is needed for supported setups. RadioMail includes built-in 1200 baud Packet and ARDOP modems that work with: * Digirig Lite * AIOC (All-In-One Cable) * Icom IC-705 PEER-TO-PEER EMAIL Exchange email directly with another station using Packet or ARDOP. RadioMail can listen for incoming peer-to-peer connections, making it easy for another station to reach you. FIND THE BEST STATION Browse the Winlink station directory and use Best Path Prediction to find stations you’re most likely to reach. Save favorites for quick access or add your own stations for peer-to-peer operation. KEEP EMAIL ORGANIZED Search your mail, flag important messages, and quickly find unread messages, attachments, forms, and today’s email with Smart Mailboxes. Select multiple messages at once when it’s time to clean up. SEND PHOTOS OVER RADIO Take a photo or choose one from your library. RadioMail can resize it to reduce transfer time over radio. Received attachments can be previewed, saved, or shared with other apps. USE WINLINK FORMS Compose and view standard Winlink forms without leaving RadioMail. Forms update automatically, and location fields can use your current GPS position. Search the Forms Library to find the form you need, or import your own custom forms from ZIP files. On iPhone, an experimental mobile layout makes supported forms easier to fill out on a smaller screen. SHARE YOUR POSITION Send your current location as a Winlink position report for publication on the APRS network. USE YOUR CONTACTS Send mail from your primary Winlink callsign or tactical addresses, and address messages to Winlink or Internet email recipients. RadioMail suggests people and lists from your Contacts as you type. MADE FOR IPHONE, IPAD, AND MAC Use RadioMail on the device that works best for you. On iPad, a three-column layout makes the most of the larger screen, and compose windows can open separately with Windowed Apps. RadioMail for iPad also runs on Apple Silicon Macs. STAY IN SYNC WITH ICLOUD Your messages, stations, and account information stay in sync through iCloud, so you can move between your devices and continue where you left off. RadioMail is independently developed and is not affiliated with the Amateur Radio Safety Foundation, Inc. (ARSFI), which supports the Winlink Global Radio Email system. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

SwiftConvert1 screens
RadioMail4 screens

Verdict

The call

The clearest difference is price: RadioMail at Free against SwiftConvert's $0.99. RadioMail also leads on rating (4.7 vs 4.0) and update cadence (every 9 days vs every 15 months). SwiftConvert's advantage is in-app purchases (none vs 2) and iOS requirement (16.0 vs 18.5). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

RadioMail is free to download; SwiftConvert costs $0.99 up front. RadioMail sells 2 in-app purchases, starting at $11.99 per year. SwiftConvert asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

RadioMail holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: RadioMail has 10 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

SwiftConvert ships an update every 15 months, RadioMail every 9 days. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

Scorecard7 real differences · 3 level
SwiftConvert versus RadioMail: the parameters behind the verdict, then further details
ParameterSwiftConvertRadioMail
Price$0.99Free — better
Rating4.0 (1 ratings)4.7 (10 ratings) — better
Positive reviews—75.0% of reviews
Number of ratings110 — better
Update frequencyEvery 15 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better18.5
Further details — not scored
Size1 MB16 MB
Age rating4+4+
DeveloperPlanetary Code LLCIsland Magic Co.

Customer experience

SwiftConvert

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

RadioMail

All ratings10 ratings
Positive90.0%
Neutral0.0%
Negative10.0%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

None

SwiftConvert

No in-app purchases

2 purchases

RadioMail

Subscriptions1
  • Yearly Subscription$11.991 Year
One-time1
  • One-Time Purchase$49.99

Questions

Is SwiftConvert free?
SwiftConvert costs $0.99, with no in-app purchases.
Is RadioMail free?
RadioMail is free to download, with in-app purchases available.
Which has better reviews, SwiftConvert or RadioMail?
RadioMail is rated higher. SwiftConvert averages 4.0 out of 5 from 1 ratings, while RadioMail averages 4.7 from 10 ratings.
Do SwiftConvert or RadioMail have ads?
Neither SwiftConvert nor RadioMail shows ads.
Which is updated more often, SwiftConvert or RadioMail?
SwiftConvert ships an update every 15 months, and RadioMail every 9 days. Most recently, SwiftConvert was updated on October 29, 2026 and RadioMail on October 28, 2026.

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