SDR vs DTMF Dialer Tool
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- Modern DTMF keypad
- Karaoke-style playback
- Favorites management
- Pause support
- Reliable tone generation
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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
Verdict
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
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.
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.
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.
| Parameter | SDR | DTMF Dialer Tool |
|---|---|---|
| Price | $44.99 | Free — better |
| Rating | 4.6 (72 ratings) — better | 4.5 (13 ratings) |
| Positive reviews | 84.3% of reviews | — |
| Number of ratings | 72 — better | 13 |
| Update frequency | Every 2 weeks | Every 10 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 55 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Marcus Roskosch | Kevin Tang |
Customer experience
SDR
DTMF Dialer Tool
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
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- 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
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- 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
SDR
No in-app purchases
DTMF Dialer Tool
- DTMF Dialer Pro$4.99









