RS vs Flapboard Display Screen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RS
Control compatible transceivers, share voice and pictures, and view station locations on a map. Access received station information, send text messages, and manage call sign and repeater lists. Customize transceiver and application settings for a streamlined experience.
- Transceiver DR functions
- Send and receive voice and pictures
- Map repeater and station locations
- Read and edit received station information
- Send and receive text messages
- Manage call sign and repeater lists
- Import/Export data
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Functional overview of the application DR functions You can use some transceiver’s DR functions. Share pictures Send and receive voice and pictures. Map See the location of repeater sites or other stations on a map using received position data, or your transceiver’s repeater list. Automatically set the transceiver’s “FROM” and “TO” fields by tapping a repeater site or a station on the map. Receive History In the DV mode, read and edit the received station’s information. Download additional information from an Internet database, such as QRZ.com or APRS.fi. Text messaging Send and receive text messages. Call Sign list Edit call signs and names used in the DR function. Also, you can add a call sign and a name in the Call Sign list. Repeater list See the detailed data entered in the Repeater list. Transceiver settings Change some of the transceiver’s function settings. Application settings Select application software settings. Import Import a Repeater list or a Call Sign list. Export Export a Repeater list, a Call Sign list, or Receive History. See the transceiver’s instruction manual for details. The instruction manual can be downloaded from the ICOM web site. Device requirements The RS-MS1I operating requirements are as follows: iOS16 or later Usable transceivers (As of May 2026) - ID-4100A/E + Bluetooth unit (UT-137) - ID-52A or ID-52E *1 - ID-52A PLUS or ID-52E PLUS *2 - ID-5200A or ID-5200E *3 - IC-705 *4 *1 Supported in RS-MS1I Ver.1.1.0 or later. *2 Supported in RS-MS1I Ver.1.3.0 or later. *3 Supported in RS-MS1I Ver.1.4.0 or later. *4 Supported in RS-MS1I Ver.1.2.0 or later. Preparation To use the RS-MS1I with a supported transceiver, you need an optional Bluetooth unit. See your transceiver’s instruction manual for details. Transceiver’s settings Set the following functions as shown below to use the RS-MS1I. [Function] > [CI-V] > [CI-V Transceive]: ON [Bluetooth Set] > [Data Device Set] > [Serial Port Function]: CI-V (Echo back OFF) Note: - The RS-MS1I may not work with all iPhones or iPads, even if they are one of the tested devices. This is because an application program on your device may conflict with the RS-MS1I. - The RS-MS1I may not be used, depending on the OS version, installed application, and so on. - Bluetooth LE is used for the connection with the transceiver, so there may be a time delay between the transceiver’s operation and the display on the iPhone or iPad. - When sending or receiving pictures using “FAST mode,” the headset audio will be temporarily interrupted because of the transceiver’s Bluetooth unit limitations. - You may need to connect to the Internet through a Wireless LAN, an LTE network or a 5G network for some functions. - The RS-MS1I supports only portrait orientation with the iPhone. It does not support Auto Rotate. However, landscape orientation and Auto Rotate are supported with the iPad.
Flapboard Display Screen
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Flapboard brings the look and feel of a real split-flap display to your iPhone. Create messages, build scenes, show live information, and turn your screen into a beautifully animated board inspired by classic railway displays. Use Flapboard to: Write and display your own messages to other Flapboard users (iCloud account required) Show clocks, dates, weather, transport, sport, and more Build scheduled scenes that change through the day Create alarms that flip the board at the right moment Import photos and artwork for board-style displays Send and receive boards with friends Use AI tools to generate board-ready text Flapboard Premium unlocks AI features including: Ask AI Daily Brief Surprise Me Make It Fit Some features require internet access, location access, notifications, or an active subscription. Subscriptions: Flapboard Premium is available as a weekly or annual auto-renewing subscription. Payment will be charged to your Apple ID account at confirmation of purchase. Subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours before the end of the current period. You can manage or cancel your subscription at any time in your App Store account settings. Privacy Policy: https://angelapplications.co.uk/privacy-policy/ Terms of Use: https://angelapplications.co.uk/terms-of-use/ Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: RS at none against Flapboard Display Screen's 2. On price, ads, device support and iOS requirement 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. Flapboard Display Screen sells 2 in-app purchases, starting at $6.99 per 7 days. RS asks for nothing beyond the download.
| Parameter | RS | Flapboard Display Screen |
|---|---|---|
| Price | Free | Free |
| Rating | 1.9 (76 ratings) — better | — |
| Positive reviews | 14.7% of reviews | — |
| Number of ratings | 76 — better | — |
| Update frequency | Every 8 months | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 34 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | ICOM INCORPORATED | Angel App Publishing Ltd. |
Bugs and requests
RS
Reported bugs
29 issues- App crashes when using map function
- App crashes on map screen
- App closes when opening map
- Not staying connected to the app
- Connection unsuccessful error message
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- Bluetooth pairing not working
- Connects and immediately disconnects
- Does not download full repeater list
- Bluetooth connection fails
- App crashes when selecting a picture to send
- Photo import force closes app
- App bombing out when trying to add a photo
- Attempting to transfer photos crashes every time
- Cannot get app to pair
- App sees radio but won't connect
- App won't connect
- Cannot connect app to iPhone
- ID-52A not pairing
- App instantly sees device but fails to connect
- Bluetooth connection does not happen
- App crashes trying to share photo
- App picture send capability is INOP
- App force closes / crashes on photo import
- Cannot get it to connect on either device
- App doesn't work with ICOM ID-5100
- App doesn't work with 4100 on iOS 15
- App doesn't work with iPhone 6s+
- Bluetooth connection does not happen after lengthy labours
- App has not been updated in almost a year
Requested features
12 requests- Add support for ID-5100
- Add support for ID-51A Plus 2
- Add support for ID-50
- Add support for IC-705
- Improve repeater list
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- Import repeater lists via Files/OneDrive/Dropbox
- Serial port support via USB
- Add support for ID-4100A with BT module
- Add support for IC-2820
- Update for iOS 15
- Update for iOS 16
- Update for iOS 18
Flapboard Display Screen
Not enough reviews yet to summarise bugs or requests.
In-app purchases
RS
No in-app purchases
Flapboard Display Screen
- Weekly Subscription$6.997 Days
- Annual Subscription$39.991 Year









