Comparison

SDR vs DTMF Dialer Tool

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

Head to head
About

SDR

Control your Icom radio remotely from your iPhone. View spectrum scope, waterfall, and access all radio controls over Wi-Fi or the internet. Supports various Icom models and includes features for ham radio operators.

Highlights
  • Spectrum scope and waterfall display
  • Full radio control
  • Remote operation over Wi-Fi/internet
  • FT8-Improved and JS8 modes
  • CW decoder and keyer
  • Speech transcription and translation
  • Logbook with ADIF import/export
Features
Read full description

Your Icom radio on your iPhone: at home over Wi-Fi or from anywhere over the internet. Made by a ham, for hams, with personal support included. SDR-Control Mobile shows the spectrum scope and waterfall of your Icom radio with all its controls. No extra hardware or software needed. WORKS WITH ■ IC-705 (Wi-Fi) ■ IC-7610, IC-7760, IC-9700, IC-7300 MK2 and the IC-R8600 receiver (radio on your network by cable) The app connects over the network only. The older IC-7300 (without MK2) has no network connection and can't be used. OPERATE ■ Spectrum scope and waterfall with band plan, DX Cluster and FT8 spots ■ Two VFOs, filters, preamp, attenuator, NB, NR, notch, AGC and more ■ Compact floating panels: tuning, PTT, CW, memories, macros, Command Bar, DTMF, RIT / ∆TX, D-Star ■ Your iPhone as microphone and speaker; the radio keeps playing in the background ■ Ready for iPhone Duo: the iPhone screens when folded, the large radio screen when open MODES ■ FT8-Improved with AutoAnswer and AutoCQ, plus the classic FT8 ■ JS8 keyboard chat ■ CW with decoder, keyer and CW keyboard ■ Speech: incoming voice transcribed and translated, your typed text sent as speech ■ SSTV, HF-Fax, APRS, WSPR and D-Star FT8-Improved, JS8, Speech and WSPR need iOS 26. TOOLS ■ Logbook with ADIF import and export, shared via iCloud with SmartSDR, FT-Control, TS-Control and K4-Control, on iPhone, iPad and Mac ■ DX Cluster, POTA, PSK Reporter, Call Lookup, Band Plan, Network Stats, Memories, Scanning ■ Controllers: MIDI, CTR2, HaliKey, Pryme, Flic ■ 4O3A Genius devices and Ultra Beam antennas MADE BY A HAM Made by Marcus, DL8MRE, who has been developing apps for Apple devices since 2009 and uses this app every day in his own shack, where all supported radios are on the desk. Personal online support and a detailed manual are included. Updates with new modes and features are free: no subscription, no in-app purchases. WHAT YOU NEED ■ One of the radios above, connected to your network ■ An iPhone with iOS 18 or later ■ For use over the internet: access to your home network from outside (see the manual) Manual: https://go-to.me/sdrcontrol-mobile-manual More apps: https://ham-radio-apps.com SDR-Control is developed independently and is not affiliated with or endorsed by Icom.

About

DTMF Dialer Tool

Generate and manage DTMF tones for dialing and testing phone numbers. Features include a modern keypad, karaoke-style playback, and favorites management for quick access to frequently used numbers. Ideal for telephony professionals and radio operators.

Highlights
  • Modern DTMF keypad
  • Karaoke-style playback
  • Favorites management
  • Pause support
  • Reliable tone generation
Features
Read full description

Effortlessly dial, test, and manage phone numbers with DTMF tones—perfect for telephony professionals, ham radio operators, and anyone who needs reliable tone dialing! Note: This app does not call. It only produces DTMF tones which may be used to control a call. Features: - Modern DTMF Keypad: Tap or hold to generate accurate DTMF tones for any number, including special characters and pauses. - Karaoke-Style Playback: Watch each digit highlight as it plays, making it easy to follow along and verify sequences. - Favorites Management: Save, name, and organize your most-used numbers for quick access. Edit or delete favorites anytime. - Pause Support: Insert pauses (",") for complex dialing sequences. - Reliable Tone Generation: Uses precise DTMF frequencies for compatibility with phone systems, PBXs, and radio repeaters. DTMF Dialer Pro (one-time purchase): - Unlimited favorites (3 favorites free; Pro unlocks unlimited) - A–D tones for the full 16-key DTMF pad - Custom tone length and pause timing - Export favorites as CSV - Remove ads Perfect For: - Accessing voicemail, conference bridges, or automated phone systems - Testing and troubleshooting telephony equipment - Amateur radio (ham) operators - Anyone needing a fast, accurate DTMF dialer Why Choose DTMF Dialer Tool? - Intuitive, modern design - Lightning-fast and accurate tone playback - Powerful favorites and editing features Download DTMF Dialer Tool today and make dialing smarter, faster, and easier!

Screenshots

SDR4 screens
DTMF Dialer Tool3 screens

Verdict

The call

The clearest difference is price: DTMF Dialer Tool at Free against SDR's $44.99. DTMF Dialer Tool also leads on iOS requirement (15.6 vs 17.6). SDR's advantage is in-app purchases (none vs 1) and ads (none vs shown). On rating, update cadence 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

DTMF Dialer Tool is free to download; SDR costs $44.99 up front. DTMF Dialer Tool sells 1 one-off in-app purchase. SDR asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for SDR against 4.5 for DTMF Dialer Tool. That said, the two scores are not equally well evidenced: SDR has 72 ratings behind it against 13, so its average is the more settled of the two.

UpkeepUpdate frequency

SDR ships an update every 2 weeks, DTMF Dialer Tool every 10 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard6 real differences · 4 level
SDR versus DTMF Dialer Tool: the parameters behind the verdict, then further details
ParameterSDRDTMF Dialer Tool
Price$44.99Free — better
Rating4.6 (72 ratings) — better4.5 (13 ratings)
Positive reviews84.3% of reviews—
Number of ratings72 — better13
Update frequencyEvery 2 weeksEvery 10 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidAd-supported — better
DevicesiPhoneiPhone, iPod — better
Requires iOS17.615.6 — better
Further details — not scored
Size55 MB5 MB
Age rating4+4+
DeveloperMarcus RoskoschKevin Tang

Customer experience

SDR

All ratings67 ratings
Positive89.6%
Neutral0.0%
Negative10.4%
Written reviews70 reviews
Positive84.3%
Neutral5.7%
Negative10.0%

DTMF Dialer Tool

All ratings13 ratings
Positive84.6%
Neutral7.7%
Negative7.7%

Bugs and requests

SDR

Reported bugs

12 issues
  • Dialogs do not scale with larger text setting
  • Frequency display overlaps buttons
  • FT8 decoding issues (lower signal levels than WSJTX)
  • App crashes and leaves radio in transmit
  • Logbook export not functional after update
Show 7 more
  • Function button for horizontal scrolling not fully displayed
  • FT8 decode is useless and unreliable
  • Messed up radio, requiring reset
  • RX audio unusable outside home network (prior to 1.5.1)
  • Struggles with audio RX packets on remote cellular networks
  • Cannot work over mobile data with certain carriers (EE)
  • FT8 alerts sound but don't display

Requested features

14 requests
  • Develop for IC-7800
  • CarPlay support
  • Apple Watch add-on
  • Windows version
  • JS8call support
Show 9 more
  • More digital modes
  • Display memory bank names
  • Initiate memory scan from app
  • WSPR implementation
  • Tool for WSPR
  • More FT8/FT4 features (e.g., setting transmit frequency directly in FT8 view)
  • Send image to unit
  • KISS TNC support
  • Control digital modes (reflectors, etc.)

DTMF Dialer Tool

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

SDR

No in-app purchases

1 purchases

DTMF Dialer Tool

One-time1
  • DTMF Dialer Pro$4.99

Questions

Is SDR free?
SDR costs $44.99, with no in-app purchases.
Is DTMF Dialer Tool free?
DTMF Dialer Tool is free to download, with in-app purchases available.
Which has better reviews, SDR or DTMF Dialer Tool?
SDR is rated higher. SDR averages 4.6 out of 5 from 72 ratings, while DTMF Dialer Tool averages 4.5 from 13 ratings.
Do SDR or DTMF Dialer Tool have ads?
DTMF Dialer Tool shows ads; SDR does not.
Which is updated more often, SDR or DTMF Dialer Tool?
SDR ships an update every 2 weeks, and DTMF Dialer Tool every 10 days. Most recently, SDR was updated on November 3, 2026 and DTMF Dialer Tool on October 30, 2026.

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