Contiducks vs ST
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Contiducks
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Manage lists of people that you want to keep in touch with, but do not want to clutter tour address book. Whether it is the people at work, the kid’s soccer team parents, or a list of your favourite restaurants - with Contiducks you can contact them easily, as if they were on your address book! Use Contiducks to: • Organise people and services into lists - based on their role in your life • Call, text or email anyone from the lists • Know who’s calling you and how they fit into your world (e.g. John from work, or Danny’s mom) • Have meaningful names in your call list and messages app, instead of phone number only • Creating a new list is simple - just create a table with the details of the contacts, save it as a CSV file - and load it into the app! • Share the list with other people via email, or instant messaging apps. Just send them the file - and they can load it to their app!
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.
- 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
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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
Verdict
The clearest difference is update cadence: Contiducks at every 9 months against ST's every 27 months. ST's advantage is iOS requirement (12.0 vs 26.0). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Contiducks ships an update every 9 months, ST every 27 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Contiducks | ST |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 9 months — better | Every 27 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Y Goren | ICOM INCORPORATED |
In-app purchases
Contiducks
No in-app purchases
ST
No in-app purchases









