Comparison

Dialer vs ST

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

Head to head
About

Dialer

This app generates DTMF tones for interacting with landline phone systems and other devices that use these tones. It allows users to play tones directly from their device's speaker and offers features like saving favorite sequences.

Highlights
  • Generate DTMF tones
  • Use with POTS and landline phones
  • Save favorite tone sequences
  • Adjustable volume
  • Unlock expanded DTMF tones (Pro)
  • Unlimited favorites (Pro)
  • Customize tone and pause length (Pro)
Features
Read full description

Dialer works with any Plain Old Telephone System (POTS) that accepts Dual tone multi-frequency (DTMF) tones such as a standard landline phone system. To use Dialer, you hold your phone's speaker up to a telephone handset or microphone and play the tone by pressing a button or by selecting one of your saved favorites. Store up to five favorites in the free version for easy dialing, such as calling cards, teleconference numbers, or complicated phone tree's. Commas act as pauses during the dialing tone sequence to allow time for prompts and other delays. Simply hold up your iPhone speaker to the landline telephone's microphone or handset and press dial. Some other devices also use DTMF tones to configure, Dialer is great for these as well. Volume is controlled by your devices volume buttons, so you can easily turn it up or down for just the right volume of your tones. Unlock Dialer Pro features such as unlimited favorites, and the ability to set the dial tone length and pause length (for commas). **Please note that some Voice over IP (VOIP) systems can have trouble recognizing the tones, for those systems try a longer key press allowing enough time for the system to register the tone. Purchase the optional upgrade to unlock these features: - Dial with precision: Unlock the power of four additional expanded DTMF tones – A, B, C, and D. Whether you're interacting with automated systems, entering passwords, or accessing exclusive services, Dialer Pro has got you covered. - Save your favorites effortlessly: With Dialer Pro, you can save an unlimited number of favorites directly from the main dialer screen, ensuring quick and easy access whenever you need it. - Customize your dialing experience: Take control over tone length and pause time when dialing your favorites. Tailor your settings to match your unique requirements, ensuring seamless compatibility with any phone system. ACCESSIBILITY FEATURES: Dialer is now fully accessible with comprehensive VoiceOver support: • Complete screen reader compatibility for blind and visually impaired users • Custom accessibility actions for DTMF tone testing via swipe gestures • Configurable VoiceOver delay timing for optimal audio experience • Clear button labels and navigation hints throughout the app • Accessible favorites management and editing Download Dialer today and make your dialing experience smarter, faster, and more enjoyable.

About

ST

This app converts photos and images into a format compatible with D-STAR transceivers for the Share Picture function. Users can crop images, add text like call signs, and transfer them wirelessly or via Bluetooth to supported transceivers.

Highlights
  • Image conversion for D-STAR Share Picture
  • Image cropping
  • Add text (call signs)
  • Wireless transfer to transceiver
  • Bluetooth transfer to transceiver
  • Save cropped image as file
Features
Read full description

The ST-4001I is an application to crop an image used for the Share Picture function of a D-STAR transceiver, and transfers it to the transceiver. ・Photos taken, or photos/images saved on the iPhone and iPad can be converted into the format used for the Share Picture function of the D-STAR transceiver. ・You can crop the image and enter text such as a call sign. ・The cropped image can be transferred through a network to the D-STAR transceiver. ・The cropped image can be transferred through a network or using Bluetooth to the D-STAR transceiver. ・You can also save the cropped image as a file. Refer to the INSTRUCTIONS for details. Device requirements: iOS12 or later Supported transceiver (As of July 2024) Transceivers that can transfer via Bluetooth Icom ID-52A/E Icom ID-52A/E PLUS Transceivers that can transfer via network Icom IC-705 Icom IC-905 Icom IC-9700* *Firmware version 1.20 or higher NOTE • Icom does not guarantee that the ST-4001I works on all iPhone and iPad. It may not work properly, depending on the OS version, installed applications, or other reasons. • The transceiver and iPhone and iPad must be connected to the same network to transfer an image to a transceiver through a network. • Bluetooth LE is used to connect to a transceiver using Bluetooth. Transferring an image may take some time due to a slow data transfer rate.

Screenshots

Dialer3 screens
ST4 screens

Verdict

The call

The clearest difference is rating: ST at 5.0 against Dialer's 4.2. ST also leads on in-app purchases (none vs 1) and device support (3 vs 1). Dialer's advantage is update cadence (every 5 months vs every 27 months) and ratings volume (37 vs 4). On price, review sentiment and ads 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

Both are free to download. Dialer sells 1 one-off in-app purchase. ST asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ST holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Dialer has 37 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 57% of Dialer's written reviews are positive against 50% of ST's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Dialer ships an update every 5 months, ST every 27 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 3 level
Dialer versus ST: the parameters behind the verdict, then further details
ParameterDialerST
PriceFreeFree
Rating4.2 (37 ratings)5.0 (4 ratings) — better
Positive reviews57.1% of reviews — better50.0% of reviews
Number of ratings37 — better4
Update frequencyEvery 5 months — betterEvery 27 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.012.0 — better
Further details — not scored
Size2 MB12 MB
Age rating4+4+
DeveloperEmmanuel TsourisICOM INCORPORATED

Customer experience

Dialer

All ratings74 ratings
Positive73.0%
Neutral5.4%
Negative21.6%
Written reviews28 reviews
Positive57.1%
Neutral3.6%
Negative39.3%

ST

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

1 purchases

Dialer

One-time1
  • Pro Upgrade$4.99
None

ST

No in-app purchases

Questions

Is Dialer free?
Dialer is free to download, with in-app purchases available.
Is ST free?
ST is free to download, with no in-app purchases.
Which has better reviews, Dialer or ST?
ST is rated higher. Dialer averages 4.2 out of 5 from 37 ratings, while ST averages 5.0 from 4 ratings.
Do Dialer or ST have ads?
Neither Dialer nor ST shows ads.
Which is updated more often, Dialer or ST?
Dialer ships an update every 5 months, and ST every 27 months. Most recently, Dialer was updated on October 23, 2026 and ST on October 24, 2026.

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